NASA Technical Memorandum 4738

ATCOM Technical Report 97-A-001

Unsteady Velocity Measurements Taken Behind

a Model Helicopter Rotor Hub in Forward

Flight

John D. Berry

Joint Research Program Office

AeroJ:lightdynamics Directorate

U.S. Army Aviation and Troop Command

Langley Research Center • Hampton, Virginia

National Aeronautics and Space Administration

Langley Research Center • Hampton, Virginia 23681-0001

March 1997
Available eleclronically at the following URL address: http://techreports.larc.nasa.gov/ltrs/Itrs.html

Printed copies available from the following:

NASA Center for AeroSpace Information

800 Elkridge Landing Road

Linthicum Heights, MD 21090-2934

(301) 621-0390

National Technical Information Service (NTIS)

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Springfield, VA 22161-217 I

(703) 487-4650
Summary

Drag caused by separated flow behind the hub of a

helicopter has an adverse effect on aerodynamic performance of the aircraft. To determine the effect of separated flow on a configuration used extensively for

helicopter aerodynamic investigations, an experiment

was conducted using a laser velocimeter to measure

velocities in the wake of a model helicopter hub operating at Mach-scaled conditions in forward flight.

Velocity measurements were taken using a laser

velocimeter with components in the vertical and downstream directions. Measurements were taken at 13 stations downstream from the rotor hub. At each station,

measurements were taken in both a horizontal and vertical row of locations. These measurements were analyzed

for harmonic content based on the rotor period of revolution. After accounting for these periodic velocities, the

remaining unsteady velocities were treated as turbulence.

Turbulence intensity distributions are presented. Average turbulent intensities ranged from approximately

2 percent of free stream to over 15 percent of free stream

at specific locations and azimuths. The maximum average value of turbulence was located near the rear-facing

region of the fuselage.

Introduction

As helicopters demand higher forward speeds, all

sources of configuration drag must be minimized. The

adverse effect of aerodynamic forces, principally drag,

produced in the hub region of helicopters is a significant

concern. Data obtained during helicopter development

show that the percentage of drag attributed only to the

hub is greater than 22 percent of the entire aircraft drag

for a representative configuration (ref. 1). Because the

hub contributes such a significant portion of overall vehicle drag, it is important to understand and accurately predict the sources and effects of hub drag. Another adverse

aerodynamic effect occurs during flight conditions when

the downstream turbulent flow from the hub interacts

with the empennage and tail rotor in standard helicopter

configurations. This effect degrades yaw control during

these flight conditions.

Modeling the helicopter configuration accurately is

important for preventing significant delays during vehicle development. The complexity used in modeling the

aerodynamics of helicopter fuselages varies greatly.

Parameters may be determined from both powered and

unpowered scale model wind tunnel tests and from analyses ranging greatly in complexity. It is important to

understand that few analyses fully account for the differences in fuselage drag caused by the effect of the rotor

wake on the fuselage, an effect studied during wind tunnel experiments (ref. 2). Currently, only experimental

methods using powered rotorcraft fuselage models can

give insight into the adverse effects of the hub region

described in the previous paragraph.

Aerodynamic investigations were conducted to measure the velocity fields in the vicinity of a model helicopter configuration (ref. 3). The model configuration

consisted of a generic rotor and fuselage representative

of a wide range of realistic helicopters. Comparisons of

the measured velocity field with analytical predictions

were made (refs. 4 and 5) to help understand and validate

rotor inflow velocity predictions. The effect of the helicopter fuselage on these inflow velocity measurements

was studied (ref. 6). However, the effects of the region of

acknowledged separation behind the rotor hub were not

assessed.

This investigation was conducted to provide and

analyze data needed to form the basis for modeling the

region behind the hub. The use of a well-documented

helicopter model configuration used for previous aerodynamic configuration studies adds to the value of this specific experimental data.

N.

Nw

PMT

R

r

T

Symbols

Figure 1 shows the coordinate system used in this

study.

b number of blades, 4

T

C T rotor thrust coefficient,

0.0064 (nominal) prtR2(_R) 2'

c blade chord, 2.61 in.

F Fourier transform of once-per-revolution

velocity

Fu magnitude of harmonic components of

u velocity

Fw magnitude of harmonic components of

w velocity

number of points in each azimuthal bin used

for computation (represented by Nu in figures)

measurement count for vertical velocity measurement (represented by Nw in figures)

photomuitiplier tube

rotor radius, 2.82 ft

radial distance from hub center, ft

thrust, lbf

l/2(u 2 + w '2)

T 2D turbulence intensity,

u velocity in x direction, ft/sec

u mean velocity in x direction, ft/sec
u' velocity fluctuation in x direction, u - _,

fffsec

,2

u average square of fluctuating velocity in

x direction

free stream velocity, fffsec

velocity in z direction, ft/sec

mean velocity in z direction, ft/sec

velocity fluctuation in z direction, w - _,

ft/sec

average square of fluctuating velocity in

z direction

velocity induced in forward flight, ft/sec

velocity induced in hover, ft/sec

downstream distance from hub center, ft

lateral distance from hub center, ft

vertical distance from hub center, ft

angle of attack of rotor tip-path-plane (positive nose up), deg

p density of air, slug/ft 3

t_ standard deviation

V rotor azimuth measured from downstream

position positive counterclockwise (as viewed

from above), deg

f_ rotational speed of rotor shaft, 221 rad/sec

(nominal)

Subscripts:

forward flight quantity

hover quantity

u component or direction quantity

w component or direction quantity

free stream quantity

Uoo

w

w

w

,2

w

wy

Wh

x

Y

Z

O_

f

h

u

w

oo

Model and Apparatus

Langley 14- by 22-Foot Subsonic Tunnel

The Langley 14- by 22-Foot Subsonic Tunnel

(ref. 7) is a closed-circuit single-return atmospheric wind

tunnel (fig. 2). The unusual test requirements associated

with vertical/short takeoff and landing (V/STOL) and

rotorcraft aerodynamic research led to design and construction of this tunnel in 1970. The tunnel has a test section that can be operated in a variety of configurations--

closed, slotted, partially open, and open. The closed test

section is 14.5 ft high by 21.75 ft wide by 50 ft long with

a maximum speed of about 338 ft/sec. The open test section configuration, which has a maximum speed capability of about 270 ft/sec, is formed by raising the ceiling

and walls to create a floor-only configuration. For this

investigation the tunnel was operated in the open test section configuration, where a nominal turbulence level of

0.25 percent has been documented.

The tunnel is equipped with an on-line static data

reduction system that can display computed average

aerodynamic coefficients with interactions and wall

interference corrections in real time. A significant facility system of this tunnel is the two-component laser

velocimeter.

Laser Velocimeter

The laser velocimeter used in this investigation is

designed to measure the components of velocity in

the longitudinal (downstream) and vertical directions

(ref. 8). This system is composed of four subsystems:

optics, traversing mechanism, data acquisition, and

seeding.

The optics subsystem (fig. 3) operates in backscatter

mode and at a relatively high power to overcome the long

focal lengths needed to scan the width of the tunnel test

section. The cylindrical sample volume resulting from

the beam intersection in the 10- to 20-fl focal length

range of the system is less than 1 cm in length with a

diameter of 0.2 mm.

The traversing mechanism subsystem includes five

axes of freedom--two by direct translation of the optics

bench, one by zoom focus of the sample volume across

the test section, and two by tilting of the final steering

mirror as the laser beams exit the optics package. The

traversing mechanism system for the velocimeter has

nominal downstream travel of 6 ft and vertical travel of

12 ft. This travel is ideally suited for scanning the entire

flow field of rotor systems less than 6 ft in diameter.

The data acquisition subsystem used for this investigation is based on frequency domain processing of the

signals from the receive optics (ref. 9). Velocity information from the frequency domain processor and azimuthal information from the model are recorded in a

buffer interface that allows for later azimuthal correlation

of the velocity signals.

The principle for laser velocimetry is based on analysis of the light reflected by particles that move with the

flow through a specific location. The seeding system in

the 14- by 22-Foot Subsonic Tunnel (ref. 3) inserts

monodisperse 1.7-gm-diameter polystyrene particles into

the portion of the flow where the laser measurements are

being made.
Rotor Test System

The rotor test system used for the experimental data

in this report is built on a generic test system (ref. 10)

developed at the 14- by 22-Foot Subsonic Tunnel. This

test system, the 2-Meter Rotor Test System (2MRTS),

consists of a 29-hp rotor drive system with collective and

cyclic blade pitch controls, a four-blade articulated hub

mounted on a six-component strain-gauge balance, and a

fuselage skin mounted on a separate similar balance.

These two six-component strain-gauge balances provide

independent measurements of the rotor and fuselage

aerodynamic loads. Figure 4(a) shows the test configuration installed in the wind tunnel with the laser velocimeter shown in the background.

The shape of the fuselage is designed to represent a

wide range of helicopter fuselages without being specific

to any particular one. The fuselage geometry can be

described by a set of equations (refs. 6 and 11). Development of computer models is simplified by using a geometry derived from equations. Figure 4(b) shows the shape

of the fuselage with example cross sections.

The rotor hub used in this study is a four-bladed

articulated hub (ref. 10). The hub articulation is set at

2.0 in. from the center of rotation with coincident flap

and lag hinges. The blade grip component of the hub has

a maximum diameter of 1.625 in. and extends to 7.5 in.

from the center of rotation. The airfoil section of the

blade is fully developed at 8.5 in. from the center of rotation. The center section of the hub has a maximum

height of 2.125 in. from the plane of blade articulation.

The pitch rod attaches to the blade grip at a radius of

2.0 in. from the center of rotation and is attached to the

swash plate at a radius of 1.4 in. with a vertical offset of

approximately 4 in. Figure 4(c) shows the exposed

geometry of the hub.

The rotor system tested consists of four rectangular

blades with a constant NACA 0012 airfoil section. The

blades have an equivalent linear twist of-8.0 ° from the

center of rotation to the tip. The chord of 2.61 in. and

radius of 33.88 in. give the system a solidity (bc/rcR) of

0.098.

Test and Procedure

The velocity measurements were taken at a flight

condition similar to that reported for a previous laser

measurement program (ref. 12). The advance ratio was

set to 0.23. A nondimensional thrust coefficient of

0.0064 was set with a tip-path angle of-3.0 ° relative to

the free stream. The rotor tip speed was set to

624.0 ft/sec. This tip speed has proven to be benign in

terms of rotor system life and is an important consideration when gathering laser velocimeter measurements.

The rotor cyclic controls were trimmed to eliminate

once-per-revolution flapping of the rotor blades. Table 1

lists the significant flight condition parameters. The

peak-to-peak deviation and standard deviation of these

parameters were determined from the static data recorded

at each measurement and are listed in table 1 to establish

the uniformity of the flight condition from one velocity

measurement to the next. Peak-to-peak deviation in this

context refers to the maximum value recorded minus the

minimum value recorded.

The grid of points where measurements were

obtained was determined from consideration of mean

rotor downwash. The center of the rotor downwash is

expected to travel on a trajectory defined by the forward

speed of the wind tunnel flow and the average momentum imparted to the flow by the lifting rotor. From

momentum calculations (ref. 1)

4 3 2 2 4

Wf-2UooW f sin O_+u wf-w h = 0 (1)

where

w h = _R (2)

Substituting the flight conditions of this investigation, the vertical component of forward velocity, wj_ is

8.61 ft/sec. This value was used to determine a uniform

slope for the grid of measurement points. Since the onset

flow is approximately 144 ft/sec, the vertical offset of

each plane of measurements, which were spaced 2 in.

apart in the downstream direction, is approximately

0.12 in. This vertical offset was used to define the center

of each downstream grid. There were nominally 15 measurement locations at each downstream station, 1 at the

center of the grid defined above, 4 spaced above the center, 4 on the left, 4 on the right, and nominally 2 below.

The measurement locations are given in table 2 and

shown in figure 5.

The unsteady flow field in the vicinity of a helicopter

rotor in forward flight is expected to be periodic with

blade passage. Measurements taken with the laser

velocimeter are derived from the random distribution of

seed particles passing through the sample volume. The

resulting random interval between samples requires that

a special technique be applied to the data to determine

the periodic content of the velocity measurement. Since

no cross-stream component of velocity was measured,

the swirl induced by the rotor and seen in the lateral component of velocity was not measured.

To determine the periodic unsteady velocity from

laser velocimeter samples, the correlation between the

3
velocity of an individual sample and the rotor azimuth

must be established. Approximately 4000 samples were

taken at each measurement location. The laser data

buffer stores the rotor azimuth with each valid velocity

measurement from the frequency domain processor.

Because it is expected that the rotor will produce velocity

that is periodic with blade passage, sorting the velocity

measurements by the azimuth of the rotor defines the

periodic content. For this analysis, 128 azimuthal ranges

or "bins" of 2.8 ° were used for the sorting. An interactive analysis routine for validating particle velocity distributions was used to edit the measurement data prior to

entry into the working velocity database. This routine

allows the user to review the velocity histogram at each

measurement point and eliminate invalid samples such as

those resulting from reflections from the body. After

editing, the average number of measurements in each

azimuthal u velocity bin was 30.2; the average number

for w measurements was 30.6.

Repeat measurements were taken at random intervals during this investigation. Repeat measurements

were also taken at one of two measurement locations at

the specified test condition after major breaks in the test

process. Data resulting from these repeat measurements

were used for two purposes: (1) confirmation that systems were operating properly and that the test conditions

were maintained, and (2) as a check on the uncertainty of

the measurement technique. When discrepancies were

uncovered, the test procedure was checked to determine

the source of the discrepancies. When the repeat points

did not discern a problem, the data were included in the

Results and Discussion section to demonstrate the general repeatability of the measurement process.

Measurement Uncertainity

Potential sources of measurement uncertainty were

considered. Data from the laser velocimeter suggest several effects may contribute to measurement uncertainty

and are given as follows:

Source of

uncertainty

Crossbeam angle

error

Diverging fringes

Velocity bias

Bragg bias

Velocity gradient

Frequency domain

processor

Bias,

percent

Random,

percent

_+0.81 Not applicable

Not measured Not measured

0 0

0 0

Negligible Negligible

Not applicable 0.20

Particle lag _+0.50 Negligible

Total error +1.31 0.2

The total laser velocimeter error, in percent of velocity, is

estimated as

Total = /Bias2 + Random 2 = 1.33 percent

This estimate presumes the actual flow accelerations are

no greater than those presented in reference 12.

Analysis

The flow in the region downstream of a helicopter

hub is expected to have two principal unsteady components: an oscillating component with period equal to

rotor blade passage, and a turbulent or aperiodic component. The velocity measurements made during this

experimental program were analyzed to separate these

two unsteady components. The periodic part of the

velocity was determined by the sorting of velocity measurements into azimuthal bins. The average value of

velocities in these bins was assumed to represent the

periodic component of the unsteady velocity at the measurement location. The turbulence at a measurement

location was then calculated as the unsteady deviation of

the velocity from the expected periodic value.

Turbulent intensity was computed from statistical

information gathered during the laser velocimeter data

reduction process. The turbulent intensity was computed

as a function of azimuth by using information about data

in each azimuthal bin. If the turbulence was not computed as a function of azimuth, the expected periodic

variance of velocity with azimuth would influence the

level of computed turbulent intensity. One of the parameters of the data reduction process is the standard deviation c of particles in each azimuthal bin described above.

The standard deviation c is computed from

(3)

where N u is the number of points in each azimuthal bin

used for the computation. Since

,_ ziNUl (Ui- U)2

// _-

N

/,/

m

then the term u'2 is computed from the deviation as

(4)

(5)
Turbulent intensity T is defined (ref. 13) by

(6)

For two-dimensional velocity data the intensity is redefined as

U

(7)

From this follows the calculation of turbulent intensity T

at each azimuthal bin from the statistical data computed

from the velocity measurements in each bin as follows:

1( 2 Nu- 1 2 Nw- 1

T = u _ + Cw 2N w

Ueo

(8)

The value of mean turbulence at every measurement

location has been computed as the average of the turbulence from each of the azimuthal bins.

Although most azimuthal bins had sufficient number of particles for this statistical analysis, a few measurement locations had no particles. To prevent the

assumption that no particles indicates no turbulence, a

linear interpolation of the turbulence across the empty

bins was used to prevent skewing the mean turbulent

intensity values.

Results and Discussion

Figure 6 shows the distribution of mean turbulent

intensity in the lateral and vertical directions at each

downstream station. Figure 6 is divided to show 15

downstream stations (labled a-o). Each downstream station in figure 6 shows two parts: the left part of the figure

is the lateral distribution of mean turbulent intensity and

the right part of the figure shows the vertical distribution

of mean turbulent intensity.

Figure 6 shows that the level of mean turbulence is

clearly greater on the side of the hub where the rotor

blades are retreating relative to the oncoming flow. On

the side of the hub where the blades are advancing, the

average level of turbulence is less. The lateral intensity

levels appear to reduce slowly as the flow progresses

downsteam but retain the relative distribution of strength.

Much less mean turbulence is observed above the rotor

(z > 0) than behind or below the rotor (z < 0). The value

of mean turbulence downstream of the hub center (z = 0)

seems to decay at a slower rate than below the downstream center. Beyond 24 in. (r/R = 0.73) downstream,

the average turbulence directly behind the hub center has

a larger value than the turbulence values below it. The

significantly lower turbulence values seen beyond

y = 5 in. (rlR = 0.15) on the advancing side indicate little

or no separation of the flow at the root of the blade on the

advancing side at this flight condition.

Multiple measurements were taken at two specific

locations. (See figs. 6(a) and 6(i).) In the location

approximately 8 in. above the hub where no separation is

expected (fig. 6(a)), all of the measurements correlate

well. In a region of expected separation (fig. 6(i))

slightly less correlation is shown although the values are

consistent. This demonstration of repeatability in estimated turbulence from the statistics of velocity measurements improves confidence in the method of obtaining

turbulence values.

Figures 7-21 present details of the velocity measurements and derived turbulent intensity values for each

measurement location. Each figure shows seven plots.

The top two plots show the azimuthal variation of the

two components of velocity. The following two plots

(Fu and Fw) are the spectral amplitudes of the velocity as

functions of the order number. These values are computed by performing a Fourier transform on the azimuthdependent velocity and computing the magnitude at each

order number. The order ratio represents the frequency

ratio of the periodic velocity signal in multiples of rotor

fundamental frequency; for example, an order ratio value

of 2 indicates a 2-per-rev frequency content in the velocity. The next two plots show the number of independent

measurements taken of the two velocity components at

each azimuth. The final plot in each figure is the computed turbulence intensity value as a function of rotor

azimuth.

From the velocity and azimuthal information,

several details of the flow behind the center of the

model rotor system can be seen. For example, in figures 7(a)-(e) the downstream component of velocity

demonstrates an increasing level of twice per revolution.

This 2-per-rev character, although unexpected, has been

observed during previous tests. This characteristic is

observed at downstream stations (figs. 7-10, (a)-(e))

until the measurements at 16 in. behind the hub. At

16 in. (r/R = 0.49) behind the hub the blade passage (four

per revolution) frequency content exceeds the 2-per-rev

content at locations above the hub centerline.

A possible significance of 4 per rev exceeding 2 per

rev is that the magnitude of the load on the blade

(four per revolution in the fixed system) becomes significant at 16 in. from the center of the hub. After 16 in.
downstreamof the hub the 2-per-rev character shifts

closer to the fuselage at most stations (figs. 11-21 (e), (f),

and (g)). There are also some measurement locations

where the existence of 2-per-rev occurs without an

upstream/downstream correlation, as seen in figures 12(k), 13(i), 17(h) and (i), and 18(i). Although the

2-per-rev seems to be most closely related to flow associated with the interaction of the hub flow and the fuselage,

no definite explanation is currently available to completely explain its existence. A possible explanation is

the existence of geometry on the hub that is 2 per rev,

meaning two opposed flapping potentiometers and a

rotating scissors that is mirrored about the shaft. The relative frontal areas of these geometric features are, however, relatively small.

Beginning with figure 10, the flow associated with

the back-facing region on the fuselage can be seen.

Scales for the downstream component of velocity at the

two stations closest to the fuselage have been adjusted to

show the reverse flow that occurs at the two stations closest to the fuselage. At the next station downstream, the

downstream velocity is also quite low (figs. 1l(f) and

(g)). Figures 6(d)-(i) show average turbulence values as

high as approximately 15 percent and azimuthal peaks of

over 20 percent. This region of the highest measured

levels of turbulence extends back to approximately 26 in.

behind the hub (77 percent of radius).

Another flow feature that is seen only in the detailed

velocity and azimuthal plots is the periodic content comparison between the advancing and the retreating side of

the rotor hub. For example, in figure 13(h) (9 in. to the

right of the hub and 20 in. downstream) the vertical component of velocity has a smooth but periodic character.

By comparison, figure 13(o) (9 in. to the left of the hub

but also 20 in. downstream) also shows a 4-perrevolution content in the vertical component of velocity,

but it is not smooth. The turbulent intensity computed on

the left (retreating) side of the rotor hub experiences a

level of about 10 percent of free stream while the right

(advancing) side experiences only about a 2-percent level

of free stream.

Figure 14(e) includes very similar measurements

taken at two different times during the flow measurements. Figure 15(g) also shows four separate sets of very

similar measurements. Although the number of samples

collected in each of the azimuth bins determines the quality of the statistical data derived from these measurements, the observed repeatability of measurements

contributes to the subjective confidence in the method.

Close interaction between the rotor blade and the

measurement location is seen in the velocity distribution

at stations between 22 in. and 36 in. (r/R = 0.67 to 1.09)

downstream of the hub (figs. 14-21), especially at the

first location above the mean downwash point (4 in.

above, figs. 14-21(d) in all cases). At azimuths of 0 °,

90 °, 180 °, and 270 ° the vertical component of velocity

shows a sudden disruption. The character of the vertical

component of velocity seen in figure 14(d) indicates a

concentration of circulation or vorticity in the flow field

close to the measurement location. This character is

believed to come from the abrupt change in the bound

circulation at the rotor blade tip as it passes by the measurement location. This is further confirmed by the complete lack of such a signature in the downstream

component of velocity. This probably indicates that the

circulation is aligned with the flow at the time of the

measurement.

In figure 19(d) for station 32, the downstream component of velocity shows a perturbation corresponding to

the vertical component event. The blades are 32.88 in.

long and the effect of the end of the blade just beyond the

measurement location of 32 in. now contributes to the

downstream component of velocity as the blade passes

the measurement location. This character confirms the

general understanding of the transfer of bound circulation to trailed circulation manifest in the tip vortex. This

signature is also seen in the downstream component of

velocity in figure 20(d) for station 34 and figure 21(d) for

station 36.

In figure 14(d) the measurement count goes to zero

at three azimuthal locations. In figures 15-19 ((d) for

each figure) the measurement count (Nw) for the vertical

velocity measurement goes to zero at four azimuthal

locations. In figures 18(d) and 19(d) both the vertical

and lateral velocity measurement counts go to zero at

four azimuthal locations. This lack of measurement is

believed to be caused by a blade obscuring or penetrating

the measurement volume and interrupting the laser

velocimeter signal.

In figure 12(h) a "spike" is seen in the turbulent

intensity data at approximately 304 ° of azimuth. Analysis of the contributing data indicates that there is a single

"high" data element in the deviation of velocity in the

downstream direction. In figure 12(h) the value is

22.7 fps while the neighboring data are on the order of

3 fps. Since the number of particle measurements in this

azimuthal bin is 32, the reason for this spike is unknown.

Conclusions

The unsteady flow behind the hub of a helicopter

configuration influences the overall flow characteristics

of the helicopter. The unsteady flow behind the hub of a

6
research configuration was measured. This configuration has been documented by extensive laser veiocimeter

measurements and provides an excellent data set for analytical correlation. The measurement of the unsteady

character of the flow behind the hub was taken to assist

in determination of relative effects of this unsteady

region.

Flow behind the hub of this characteristic helicopter

configuration was measured at 13 stations downstream

from the rotor hub. At each station measurements were

made in both a horizontal and vertical row of locations.

The downstream stations extend beyond the radius of the

rotor. At each measurement point the vertical and downstream components of velocity were measured using a

laser velocimeter. Approximately 4000 samples were

taken at each measurement point. For each sample, the

rotor azimuth was recorded. The correlation of velocity

measurements with rotor azimuth allowed definition of

periodic velocities at each measurement location.

The unsteady flow in the region behind the hub has

been analyzed in two parts. The principal part of the

unsteady flow is presumed to be caused by the periodic

passage of the rotor blades. The secondary part of the

unsteady flow is caused by turbulence or aperiodic

flow. An unusual characteristic of the flow is the twiceper-revolution periodic characteristic found in specific

regions of the flow. The turbulent flow has been characterized with a two-dimensional turbulent intensity that is

independent of the periodic part of the unsteady flow.

The resulting characterization of the unsteady flow

behind the rotor hub shows that the aperiodic magnitude

of the flow is greater on the retreating side than the

advancing side of the rotor. The periodic magnitudes are

shown to be greater on the advancing side of the rotor.

There is a region of the largest aperiodic flow behind the

rear-facing slope of the helicopter fuselage shape. The

magnitudes of the aperiodic flow can be as much as

15 percent of the free stream.

The velocity field associated with the concentration

of circulation on the rotor blades is seen in the azimuthdependent velocities at measurement locations close to

the passage of the rotor blades. Some azimuthal measurements were obscured because of the passage of the

blades at these locations. Measurements close to the end

of the rotor blades show the influence of the abrupt

change in the bound circulation at the blade tip as it

passes by the measurement location.

NASA Langley Research Center

Hampton, VA 23681-0001

September 10, 1996

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U.S. Army Small-Scale 2-Meter Rotor Test System. NASA

TM-87762, AVSCOM-TM-86-B-4, 1987.

11. Freeman, Carl E.; and Mineck, Raymond E.: Fuselage Surface

Pressure Measurements of a Helicopter Wind-Tunnel Model

With a 3.15-Meter Diameter Single Rotor. NASA TM-80051,

1979.

12. Elliott, Joe W.; Althoff, Susan L.; and Sailey, Richard H.:

Inflow Measurement Made With a Laser Velocimeter on a

Helicopter Model in Forward Flight. Volume 2: Rectangular

Planform Blades at an Advance Ratio of 0.23. NASA TM100542, AVSCOM-TM-88-B-005, 1988.

13. Schlichting, Hermann (J. Kestin, transl.): Boundary-Layer

Theory, Sixth ed., McGraw-Hill Book Co., Inc., 1968.
Table 1. Flight Condition Parameters

Peak to peak Standard

Parameter Average deviation deviation

Velocity, ft/sec

Tip path attitude, deg

Density, Slugs/ft 3

Hover tip speed, ft/sec

Advance ratio

Collective cyclic, deg

Lateral cyclic, deg

Longitudinal cyclic, deg

Lift, lbf

Drag, lbf

Thrust coefficient

Power, hp

Rotation rate, rpm

Unit Reynolds number, per ft

143.4

-2.7

0.002330

621.4

0.230

6.4

-0.8

2.8

145.6

0.73

0.0064

7.6

2110.8

889874

1.8

1.1

0.000043

3.2

0._3

0.2

0.5

0.6

5.2

1.23

0.0003

0.9

8.1

29060

0.36

0.28

0.000008

0.58

0.0006

0.05

0.16

0.22

1.1

0.273

0.00006

0.24

1.42

5673

8
Table2. Measurement Locations

x, in. y, in. z, in. Figure

8 0 8.518 7(a)

8 0 7.518 7(b)

8 0 5.518 7(c)

8 0 3.518 7(d)

8 0 -.482 7(e)

8 0 -4.482 7(f)

8 9 -.482 7(g)

8 8 -.482 7(h)

8 6 -.482 7(i)

8 4 -.482 70)

8 -4 -.482 7(k)

8 -6 -.482 7(1)

8 -8 -.482 7(m)

8 -9 -.482 7(n)

10 0 8.398 8(a)

I0 0 7.398 8(b)

10 0 5.398 8(c)

10 0 3.398 8(d)

10 0 -.602 8(e)

10 0 --4.602 8(f)

10 9 -.602 8(g)

10 8 -.602 8(h)

10 6 -.602 8(i)

10 4 -.602 80)

10 -4 -.602 8(k)

10 -6 -.602 8(I)

10 -8 -.602 8(m)

10 -9 -.602 8(n)

12 0 8.278 9(a)

12 0 7.278 9(b)

12 0 5.278 9(c)

12 0 3.278 9(d)

12 0 -.722 9(e)

12 0 -4.722 9(f)

12 9 -.722 9(g)

12 8 -.722 9(h)

12 6 -.722 9(i)

12 4 -.722 9(j)

12 -4 -.722 9(k)

12 -6 -.722 9(1)

12 -8 -.722 9(m)

12 -9 -.722 9(n)
10

x, in.

14

14

14

14

14

14

14

14

14

14

14

14

14

14

14

Table 2. Continued

y, in. 00000z, in.

8.157

7.157

5.157

0 -4.843 0 -6.843

Figure

10(a)

lO(b)

10(c)

lO(d)

lO(e)

1o(0

lO(g)

9 -.843 lO(h) 8 -.843 lO(i) 6 -.843 lOO) 4 -.843 lO(k)

-4 -.843 10(1)

-6 -.843 lO(m)

-8 -.843

-.843

8.037

7.037

5.037

3.037

-.963

-9

160

160

160

160

160

160 --4.963

160 -6.963 9 -.963 8 -.963

10(n)

1O(o)

ll(a)

16

16

16

16

16

l{(b)

11(c)

ll(d)

11(e)

11(0

ll(g)

ll(h)

16

16

16

18

18

18

18

18

18

ll(i)

6 -.963 llO) 4 -.963 ll(k)

-4 -.963

-6 -.963

-8

Il({)

18

18

188

186

11(m)

-.963 ll(n)

-9 -.963 11(o) 0 7.917 12(a)

6.917 12(b)

4.917

2.917

-1.083

-5.083

-7.083

-1.083

-1.083

-1.083

184 -1.083

18 ---4 -1.083

18 -6 -1.083

18 -8 -1.083

18 -9 -1.083

12(c)

12(d)

12(e)

12(f)

12(g)

12(h)

12(i)

12O)

12(k)

12(I)

12(m)

12(n)

12(o)
Table2. Continued

x, in.

20

20

20

20

20

20

20

20

20

20

204

20 -4

20 -6

20 -8

20 -9

220

220

220

220

220

y, in. z, in. 0 7.796 0 6.796

4.796

Figure

13(a)

13(b)

13(c)

2.796 13(d)

-1.204 13(e)

0 -5.204 13(0 0 -7.204 13(g) 9 -1.204 13(h)

-1.204 13(i)

-1.204 13Q)

-1.204 13(k)

-1.204 13(1)

-1.204 13(m) - 1.204 13(n) - ! .204

7.676

6.676

4.676

2.676

-1.324

220 -5.324

220 -7.324

229 -1.324

13(o)

14(a)

14(b)

14(c)

14(d)

14(e)

14(f)

14(g)

14(h)

228 -1.324 14(i)

226 -1.324 14O)

224 -1.324

22 -4 -1.324

22 -6 -1.324

14(k)

22

22

24

24

14(1)

14(m)

-8 -1.324 14(n)

-9 -1.324 14(o) 0 7.555 15(a) 0 6.555

240 4.555

240 2.555

240 -!.445

-5.445

15(b)

15(c)

15(d)

15(e)

15(0

15(g)

24

24

24

248

246

244

24 -4

-6

-8

24

24

24 -9

15(h)

-1.445 15(i)

-1.445 150)

-1.445 15(k)

-1.445

-1.445 - i .445

-I .445

15(i)

15(m)

15(n)

15(o)

11
12

Table2. Continued

x, in. y, in. z, in. Figure

260 7.435 16(a)

260 6.435 16(b)

260 4.435 16(c)

260 2.435 16(d)

260 -1.565 16(e)

260 -5.565 16(0

260 -7.565 16(g)

269 -1.565 16(h)

268 -1.565 16(i)

266 -1.565 16(j)

264 -1.565 16(k)

26 -4 -1.565 16(i)

26 -6 -1.565 16(m)

26 -8 -1.565 16(n)

26 -9 -1.565 16(o)

280 7.315 17(a)

280 6.3i5 17(b)

280 4.315 17(c)

280 2.315 17(d)

280 -1.685 17(e)

280 -5.685 17(0

280 -7.685 17(g)

289 -I.685 17(h)

288 -1.685 17(i)

286 -1.685 17(j)

284 -1.685 17(k)

28 --4 -1.685 17(I)

28 -6 -1.685 17(m)

28 -8- 1.685 17(n)

28 -9- 1.685 17(0)

300 7.194 18(a)

300 6.194 18(b)

300 4.194 18(c)

300 2.194 18(d)

300- 1.806 18(e)

300 -5.806 18(f)

300 -7.806 18(g)

309 -1.806 18(h)

308 -1.806 18(i)

306 -1.806 180)

304 -1.806 18(k)

30 -4- 1.806 18(1)

30 -6- 1.806 18(m)

30 -8- 1.806 18(n)

30 -9- 1.806 18(0)
Table2.Concluded

x, in. y, in.

320

32

32

32

320

320

320

329

328

z, in. 16igure

7.074 19(a)

6.074 19(b)

4.074 19(c)

2.074 19(d)

- 1.926 19(e)

-5.926 19(f)

-7.926 19(g)

-1.926 19(h)

-1.926

326 -1.926

324 -1.926

32 -4 -I.926

32 -6 -1.926

32 -8 -1.926

19(i)

190)

19(k)

19(1)

19(m)

19(n)

32 -9 -1.926 19(o)

340 6.953 20(a)

340 5.953

340 3.953

340 1.953

340

340

340

349

348

20(b)

20(c)

20(d)

-2.047 20(e)

-6.047 20(f)

-8.047 20(g)

-2.047 20(h)

-2.047 20(i)

346 -2.047 20(j)

344 -2.047 20(k)

34 -4 -2.047

34 -6 -2.047

34 -8 -2.047

20(1)

20(m)

34 -9

360

360

360

20(n)

-2.047 20(o)

6.833 21(a)

5.833

3.833

21(b)

21(c)

360 1.833 21(d)

360 -2.167 21(e)

360 -6.167

-4

-6

-8

-9

-8.167

-2.167

-2.167

-2.167

-2.167

21(f)

36

36

36

36

36

36

36

36

36

21(g)

21(h)

21(i)

210)

21(k)

21(1)

21(m)

-2.167 21(n)

-2.167 21(o)

13
Z, W

'1_ Tip path plane

____.__,_l, J

I

I

I

1

Figure 1. Reference coordinate system.

Figure 2. 14- by 22-Foot Subsonic Tunnel.

14
J

Sample volume

Zoom lens system 4-hole mirror

Steenng m,rrors PMTLll __ I (/_Mirror

Color separator

Transmitter package

Bragg cells

Argon ion laser

Mirror

>

>

Mirror

Figure 3. Schematic of laser velocimeter optic subsystem.

15
(a) Helicopterconfigurationiwindtunnel.

Figure4. Modelconfiguration.

16
27.4

H_ff_

oo o o ooo o

12.75

Hub center

///

E) 0

ffl m

U. U24"/_i-647---

I

\\\\_

\\\\_

\\\\_

\\\\_

"//2_.

0 0

LL UFS 32.0 I

L

3.312

3.033

!,T9.867

Typical section

_ i Side view

0 0 0

ffl Or) O3

_ LL U_

80

Top view

-i,--

¢J

O_

(D

LL

(b) Fuselage geometry. Dimensions are in inches.

Figure 4. Continued.

17
1.625

2.125

15

5.188

2 _ Lead-lag

| axis

4 (nom.)

Cuff

)itch rod

(c)

Rotating

scissors

Swash plate

plane

Hub geometry. Dimensions in inches.

Figure 4. Concluded.

18
OO o 0 0 o o O0

Rear view

00_oo00oo00ooo OO 0ooo00oo0oo

00000000o000000

00o000000o000oo

_! ! _ _e_ical

o00000oo000o 0

oo000oo00oo0ooo

o_oo_oo_ooo_o o OO O0 00o 0

Top view

_ ° ° o o o o o o o o o o o o 4"33°

oo _ oo _ 00000oo /

00Ooo00o0 oo

_ Horizontal

t/ v -

o00 _ oo0000000_

/_ °°0oo0000000

Side view

Figure 5. Velocity measurement locations.

19
.2 --

T

0 0

0

o o

0.1-

0

0

Oo

0 .... I,, , , I j _ L, I, ,_, I

-10.0 -5.0 0 5.0 10.0

y, in.

(a) x = 8 in.

O

O

O

, , , I ,, , L I , J , , i Oj ,o1_, I

-10.0 -5.0 0 5.0 10.0

Z, in.

T

0.2 --

0 0 0 0

0

0.1-

0

o

O0

-10.0 -5.0 0 5.0 10.0

y, in.

(b) x= 10 in.

L

_ O O

O

-10.0 -5.0 0 5.0 10.0

z, in.

T

0.2 --

0 0 0 o

0.1 -

0

0

O0

-10.0 -5.0 0 5.0 10.0

y, in.

(c) x=12in.

O

O

O

7- O

J , L _ I , , , , I = _ j j I , po,,I

-10.0 -5.0 0 5.0 10.0

Z, in.

T

0.2 n

0

0.1-

0

-10.0

0 0 O O

o

0

O0

-5.0 0 5.0 10.0

y, in.

(d) x = 14 in.

o o

0

0

.... .... , .... ?,?°,l

-10.0 -5.0 0 5.0 10.0

z, in.

Figure 6. Distribution of mean turbulence intensity.

20
T

0.2 --

0 0 0 0 0

0.1-- 0

0

O0

0 _, ,, I .... I .... I , , _ I

-10.0 -5.0 0 5.0 10.0

y, in.

(e) x = 16 in.

m

0

0

0

0

.... i,,,,I .... ?,?o,h

-10.0 -5.0 0 5.0 10.0

z, in.

T

0.2 --

0.1

0

-11

O0 0 0

O

O0

1.0 -5.0 0 5.0 10.0

y, in.

(f) x=18in.

0

0

0

0

0 F%,-_

,.,,, .... L.... ,...,I

-10.0 -5.0 0 5.0 10.0

z, in.

T

0,2 m

0

0.1 _oo o o o

0

Oo

0 ,, , , I .... I .... I _ _ ,, I

-10.0 -5.0 0 5.0 10.0

y, in.

(g) x = 20 in.

m

0 0

0

0

t , , L I j , k _ I , , , Jc_,qq, I

-10.0 -5.0 0 5.0 10.0

z, in.

T

0,2 --

0

0 0 0

0.1 Do

0

O0

0 ,,,,i, ,,_I,,,,I,, _,I

-10.0 -5.0 0 5.0 10.0

y, in.

0 0

0

(h) x = 22 in.

0

0

t _ _ I .... I , , ,, I ,°, °, , I

-10.0 -5.0 0 5.0 10.0

Z, irl.

Figure 6. Continued.

21
.2 --

T

O O

0.1 o o o

20

0

O0

-10.0 -5.0 0 5.0 10.0

y, in.

(i) x = 24 in.

0 0

o

, , , , I , [ ¢ J I , , , ol ,O,o, , 1

-10.0 -5.0 0 5.0 10.0

Z, in.

T

0.2 b

O O

0.1 o o o

O

o

Oo

0 .... I ,L_ ,I t , ,_I, , , , I

-10.0 -5.0 0 5.0 10.0

y, in.

(j) x = 26 in.

0 0 0

I," _ L i* j" j i, :°

j LOI ,OO I

-10.0 -5.0 0 5.0 10.0

Z, in.

T

0.2 m

O O

0.1 o o o

o

0

0 o

0 L_ ,_1,, _ _ I , J _,1 .... I

-10.0 -5.0 0 5.0 10.0

y, in.

(k) x = 28 in.

0 0 0

0

o O0

J-_ _ _ I , , L L I L L , J I J _ k j I

-10.0 -5.0 0 5.0 10.0

Z, in.

T

0.2 --

0.1

0

-10.0

o

O

0 0 0

2o

0

0 o

, , , , I J _ i i I _ _ , J I i , , , I

-5.0 0 5.0

y, in.

0

0 0

10.0

(1) x = 30 in.

0 0 O0

.... I , i , j I _ i _ , I , , , , I

-10.0 -5.0 0 5.0 10.0

Z, in.

Figure 6. Continued.

22
T

0.2 --

0 0

0.1 o o

0

0 0

oo

0 .... I,,,, I,J,JILJ,,I

-10.0 -5.0 0 5.0 10.0

y, in.

(m) x = 32 in.

0

0 0

o 0

.... I .... I .... 1(29,, i

-10.0 -5.0 0 5.0 10.0

z, in.

0.2 m

0

0.1 o o o

0

_-0

0

O0

0 .... I .... I .... I, LL, I

-10.0 -5.0 0 5.0 10.0

y, in.

(n) x = 34 in.

0

0 ©

0

0

.... I .... I .... 1°,9,,t

-10.0 -5.0 0 5.0 10.0

Z, in.

0.2 --

T

0

0.1 o o

0 0

-0 0

O0

0 J _ _ , I .... I .... I .... I

-10.0 -5.0 0 5.0 10.0

y, in.

o

o 0

0

.... _ .... _,, 1 too,,, p

-10.0 -5.0 0 5.0 10.0

z, in.

(o) x = 32 in.

Figure 6. Concluded.

23
200.0 -

175.0

u, fps 150.0 ....

125.0

100.0 , , J , J , , , I , , L , , , J , i J J__i i i _ , I , , J , J,, _ , J

50.0 -

25.0

w, fps 0 _

-25.0

-50.00 , , J J _ J _ I

Fu 10.0

0

I I I 1 I , , _ J I J I _I 4 _ _ I I J I I I I I J I l I

90 180 270 360

Azimuth, deg

Fw 10.0

0

NLI

Nw

T

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

60

30

0 I

6O

3O

0 J

0.3-

0.2

0.1

00-_,-_-_-,,, ,--_ ] _-___-_=,, _-_ _,-_--_--m%,, T_-,-_-=1 90 180 270 360

Azimuth, deg

(a) y = Oin., z = 8.518 in.

Figure 7. Velocity and turbulence at station 8 in.

24
200.0 -

175.0

u, fps 150.0 -

125.0

100.0

w, fps

Fu

50.0 -

25.0

0 _---_

-25.0

J _ _ L i i _ _ i I i i J i i i i B I h i i i k I L I K L i _ t i i J I

-50"00 90 180 270 360

Azimuth, deg

10._

Fw 10._

NM

Nw

T

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

oo30

0 I

oo30

0 I

0.3-

0.2

0.1

O' I

0 90 180 270 360

Azimuth, deg

(b) y = 0 in., z = 7.518 in.

Figure 7. Continued.

25
200.0 -

175.0

u, fps 150.0 -

125.0

100.0

w, fps

50.0 -

25.0

Fu

-25.0

_50.00 , J _,, _,, I , , , , , , L , I I , , , i k i , I , L L L j _ , _ I 90 180 270 360

Azimuth, deg

10.0

0

Fw

NM

Nw

T

10.0

0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

0,, _1Li,I J I I* J _ I L, , I, J J I j j j t I R , , j, ,, j t

3 ,...

I

0.3-

0.2

0.1

0 I I I I I I I I I I I I I 1 I I I I I I _ I I I I I I I I I I _1_"'t

0 90 180 270 360

Azimuth, deg

(c) y = 0 in., z = 5.518 in.

Figure 7. Continued.

26
200.0 -

175.0

u, fps 150.0

125.0

100.0 i _ i i i i i i I i t i _ L i i i [ _ J J J t _ L i I i I _ _ J t i i I

50.0 -

25.0

w, fps 0

-25.0

-50.00

Fu 10.0

0

I 1 ] 1 i I J i I I I I Z I I I I I I I I I I L L I 1 L I I I I I I i

90 180 270 360

Azimuth, deg

Fw

Nu

Nw

T

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

30

0

30

0

0.3-

0.2

0."

001Jj j _ i i i 90 180 270 i i i i i L i i360I

Azimuth, deg

(d) y = 0 in., z = 3.518 in.

Figure 7. Continued.

27
75.0

u, fps 50.0

25.0

0

w, fps

Fu

50.0 -

25.0

o

-25.0

_5000,,, _,,, L I, L,, _ i L, I,,,,,,, , I,,,,,,,, I

• 90 180 270 360

Azimuth, deg

10.0

0 m

Fw

Nu

Nw

T

10.01

i

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

60=- ,

0}- _ , , , i__ I , J i J , _ , I , k I J , , , i , I J I , , J , i , i J 1

Ob I I _ I I__ I I I J I J J I I I i I i I J r I I I I I I r J i J _ i 1

0.3-

0.2

0 I I I I i I I J I J I I i _ J I I I _ i _ i J _ J I I I I I I I I J L t

0 90 180 270 360

Azimuth, deg

(e) y = 0 in., z = -0.482 in.

Figure 7. Continued.

28
u, fps

w, fps

Fu

50.0 -

25.0

0

-25.0

i L, J,,,_ I,,,_LL_,I,,,,,,, IIJ,tJJJ_, J

"50"00 90 180 270 360

Azimuth, deg

Fw

NM

Nw

T

10.0

0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

oo30 ,,__

0 J

0 I J i J I J L J t I _ _ I i I L I I t J t t i I t t I I L _ I i I I I

0.3-

0.2

o.1

i L J i J J _ i I t I J t t t I t I t f f I t I I t I I J J t I I I I I

90 180 270 360

Azimuth, deg

(f) y = 0 in., z = -4.482 in.

Figure 7. Continued.

29
200.0 -

175.0

u, fps 150.0

125.0

100.0 IL''=lilll, LI,,,, JL, I,,,,=lJ,,, JJ,ij

w, fps

FM

50.0 -

25.0

o

-25.0

.50.00 _'' I t, _ _ l *,,,,, L J I J,, , J I i L I , _ , , , j i _ J 90 180 270 360

Azimuth, deg

10.0

0

Fw

Nu

Nw

T

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

\ _ Orders _, A

30 k t , I

60

0.3--

0.2

0.1

90 180 270 360

Azimuth, deg

(g) y = 9 in., z = -0.482 in.

Figure 7. Continued.

30
200.0 -

175.0

u, fps 150.0

125.0

100.0

w, fps

Fu

50.0 -

25.0

0

-25.0

-50"00 90 180 270 360

Azimuth, deg

10.0

0

Fw

Nu

Nw

T

10-0 I

0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

oo30

0 I

3060__ i i i _ i i _ j L i _ _ L i h i

0 I

0.3 m

0.2

0.1

t I I I I I

90 180 270 360

Azimuth, deg

(h) y = 8 in., z = -0.482 in.

Figure 7. Continued.

31
200.0 --

175.0

u, fps 150.0

125.0

100.0

w, fps

ELI

50.0 -

25.0

-25.0

-50.0_ i i , J I i i i I i i , i ¢ , L , J I k i = i _ J i ] ¢ J i i i J , _ [

0 90 180 270 360

Azimuth, deg

10.0

Fw

Nu

Nw

T

1° I I|

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

OkJJ I I J J _t I = I tl=ll,II I I I I L_ III J t I I _ I, l

O_J I k J i L t _ I L J L , , I , , I J i i , , 11 , I , a i J J L , , I

0"31_ j

0.2

0 90 180 270 360

Azimuth, deg

(i) y = 6 in., z = -0.482 in.

Figure 7. Continued.

32
u, fps 125.0

100.0

75.0

w, fps

Fu

50.0 -

Fw

Nu

Nw

T

10.0

0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

30

i L _ i i _ i j i i I i i , i i , i , i i t i i i i i J I

ooao

o t

o.a_ 0.2

I I I t 1 1 J

00 90 180 270 360

Azimuth, deg

(j) y = 4 in., z = -0.482 in.

Figure 7. Continued.

33
200.0 --

175.0

u, fps 150.0

125.0

100.0

50.0 -

w, fps

-25.0

-500_) '. ' ' ' ' ' ' '

25.0

1 , , , _ , , , , I , , J , i J i _ 1 J , , , , , j l I

90 180 270 360

10.0

FU

0

Azimuth, deg

Fw

Nu

Nw

T

10.0

0

1 2 3 4 5 6 7 8 9 10 il 12 13 14 15 16

Orders

6°F-

, , I _ L _ _ I , , , I , , , , , _ i i I

0,3--

Azimuth, deg

(k) y = --4 in,, z = -0.482 in.

Figure 7. Continued.

34
175.0 -

150.0

u, fps 125.0

100.0

75.0

50.0 -

w, fps

Fu

25.0

-25.0

-50"00 90 180 270 360

Azimuth, deg

10.0

0

Fw

Nu

Nw

T

,°_1

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

ooao

o i

oo30

0 I

o.a_ 0.2

,

v0 90 180 270 360

Azimuth, deg

(1) y = -6 in., z = -0.482 in.

Figure 7. Continued.

35
200.0 -

175.0

u, fps 150.0

125.0

100.0 i,L,LkiliLILJl_L,li,JiIi If}ill If l ill

50.0 -

w, fps

Fu

25.0

o

-25.0

iJ1J,_J JliiilitJ J I ,LJ_ t , _ [ , , J _ _ , , , I

-50"00 90 180 270 360

Azimuth, deg

10.0

0

Fw

NM

Nw

T

10.0

0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Ordem

60_/ 3O

O_ i J I i J i _ i I , J i J I _ i L [ J i i_i J [ i ¢ I i J i J i i i i J

Ok_ I , , _ J_[ t I I J J I I I l I I , I I I _ _ t , J I I , J L , I

0.3

0.2_

O_J , _ J L I _ s I I I , I , , I _ I I J I , I s , J I I I J I t I , J l

0 90 180 270 360

Azimuth, deg

(m) y = -8 in., z = -0.482 in.

Figure 7. Continued.

36
200.0 -

175.0

u, fps 150.0

125.0

100.0

50.0 -

w, fps

Fu

25.0

0

-25.0

-50"00 90 180 270 360

Azimuth, deg

10.0

Fw

NM

Nw

T

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

oo30

0 I

oo30

0 b

0.3-

0.2

t _ i _ i J i i I _ I i t i I i I t I J t I I I I I I i i t L L I t i I

"0 90 180 270 360

Azimuth, deg

(n) y = -9 in., z = -0.482 in.

Figure 7. Concluded.

37
200.0 -

175.0

u, fps 150.0

125.0

100.0

50.0 -

w, fps

Fu

25.0

0

-25.0

_50.00, _, _,,,, t,,,, _ _,, I , _,,, _, _ I , 90 180 270

Azimuth, deg

10.0 /

0 L

I I I LLLll

36O

Fw 10.0 I

0 _

Nu

Nw

T

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

60= -_

Of- , l , t l L , _ i I , J , , , , J l , , J , L k I t I i j I _ i i i L I

0.3-

0.2

0.1

0 l

0 90 180 270 360

Azimuth, deg

(a) y = 0 in., z = 8.398 in.

Figure 8. Velocity and turbulence at station 10 in.

38
200.0 -

175.0

u, fps 150.0

125.0

100.0 L i j i _ i i = I t i i j j i i = I i J i _ _ i i i I i i i i i i i i I

w, fps

Fu

50.0 -

25.0

0

-25.0

_ i i i i _ i i i i i i t t i i i [ J J i t i L i J I i i i J L i t t b

00 90 180 270 360

Azimuth, deg

10.0

0

Fw

NM

Nw

T

10.0 i

0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

6030

0

60ao

0 I J [ I _ I

0.3--

0.2

0.1

I

u0 90 180 270 360

Azimuth, deg

(b) y = 0 in., z = 7.398 in.

Figure 8. Continued.

39
200.0 -

175.0

u, fps 150.0 -

125.0

100.0 t L , , J I , , I t b , h , , , _ I , , , , L , r , I L , , , L , , , I

50.0 --

25.0

W, fps 0

Fu

-25.0

.50.00, I,,, J _ _ I J t , , , , J , I , , , , L _ , , I , , , , _ L j , I 90 180 270 360

Azimuth, deg

10._

Fw

Nu

Nw

T

1° I

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

OV J J k i L L , J J , , , J , , , , L L L_L _ J _ _ L ] J , , L , j i 1 I

30 _'-_/ /'-_

01 i I L _ , , L_ J I I I J I t _ I i I I r I I I I _ I I J J J _ l L I J

0.3 --

0.2

0.1

I I I I I I I r

90 180 270 360

Azimuth, deg

(c) y = 0 in., z = 5.398 in.

Figure 8. Continued.

411
200.0 _-

175.0Fu, fps 150.0

125.0_-

w, fps

Fu

50.0 -

25.0

0

-50.0 k i , , , , t t I i i , i , t , i I , i L I , , , I I t J I , , , , , I

0 90 180 270 360

Azimuth, deg

10.0

0

Fw

Nu

Nw

T

10.0

0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

oo3o

0 _ t , i , , i

oo30

0 I

0.3--

0.2

0.1

C

90 180 270 360

Azimuth, deg

(d) y = 0 in., z = 3.398 in.

Figure 8. Continued.

41
100.0 -

75.0

u, fps 50.0

25.0

0

50.0 -

w, fps

Fu

Fw

NM

Nw

T

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

O_ers

30 _. _A_-_-_ _._vOi r i J ' L l t _ I I l J J , t _ L i L i I J i _ i j ] i i j l j , j i J

30 _/_ ___ /_

0V_lrll, J,l_J ll,llllll _l_ LillJl L,_,I,I

0.3

0.2_

0 90 180 270 360

Azimuth, deg

(e) y = 0 in., z = -0.602 in.

Figure 8. Continued.

42
u, fps

50.0 -

25.0

0

-25.0

-50.0 _l,,l,,_L_L,_j,_tt, ,, _t Ii,l,,,,I ,t '1

50.0 --

25.0

W, fps 0

Fu

-25.0

_50.00 I J , i _ I I t

10.0

0

I [ i i i i I I _ t I I I L I k L I t I I I I I I I I i

90 180 270 360

Azimuth, deg

Fw

Nu

Nw

T

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

0 i i i L _ i i i [ i i l i i i L i [ I i i i _ i i t I , , h , , t _

30

0

0.3-

0.2

0.1

0

m

j k j , , i L , I i i j i i , , , I , i I , , , , , I , J , _ ' _ L t I

90 180 270 360

Azimuth, deg

(f) y = 0 in., z = -4.602 in.

Figure 8. Continued.

43
200.0 -

175.0

u, fps 150.0

125.0

100.0

50.0 -

w, fps

Fu

25.0

-25.0

-50"00 90 180 270 360

Azimuth, deg

10-0 I

0 _

Fw

NM

Nw

T

10.0 I

01

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

0 I I i i i t i i I

0.3-

0.2

0.1

90 180 270 360

Azimuth, deg

(g) y = 9 in., z = -0.602 in.

Figure 8. Continued.

44
200.0 -

175.0

u, fps 150.0

125.0

100.0

50.0 -

25.0

w, fps 0

-25.0

_50.00 I i i i i i i L90I i i j t i t i, 180I _ i t i i i _ _270I, i i i i i i i360I

Azimuth, deg

Fu 10.0

0

Fw

Nu

Nw

T

10.0

0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

30

0 I

6o30

0 I

0.3_- 0.2

;o

0 90 180 270

Azimuth, deg

(h) y = 8 in., z = -0.602 in.

Figure 8. Continued.

45
200.0 --

175.0

u, fps 150.0

125.0

100.0 i i I i , i i i I i i i i i i i i I i t i i i i i i l i i i i i i i i I

50.0 -

25.0

w, fps 0 _-_--_____

-25.0

_50.00, J J,, _,, 90I , , Ill J, *180),, ,, I_, ,270lii , ,, , , iI360

Azimuth, deg

Fu

Fw

NM

Nw

T

10.0

0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

O F i I i 1 i 1 i t 1 t I t 1 t I t t I i i i i i 1 t 1 1 i i 1 t i 1 t 1 I

0(- I I l I I i I I 'P I I I I I , I ( I I I l I l I i , J I I t i I l t I I

0.3

0.2_

0.1/n,

t

v0 90 180 270 360

Azimuth, deg

(i) y = 6 in., z = -0.602 in.

Figure 8. Continued.

46
200.0 -

175.0

u, fps 150.0

125.0

100.0

w, fps

Fu

Fw

NM

Nw

T

10.0

0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

o.3 

0.2

0.1

0 I

0 90 180 270 360

Azimuth, deg

(j) y = 4 in., z = -0.602 in.

Figure 8. Continued.

47
150.0 -

125.0

u, fps 100.0

75.0

50.0

w, fps

Fu

0

Fw

Nu

Nw

T

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

OFJ, , , t ,,, I,,,,, ,,II, i L _ ill,ILl, Jj LIII

Ob , I J , L , L , 1L , I , I _ , , I J , ,_J , I , , 1 , , , , , i I , l

0.3--

0.2

OoJ t L I I , , _ I _ , , , , , _ , I I _ I I t , L I 1 J I L I i I i J I 90 180 270 360

Azimuth, deg

(k) y =-4 in., z = -0.602 in.

Figure 8. Continued.

48
150.0 -

125.0

u, fps 100.0

75.0

50.0

w, fps

Fu

50.0 --

25.0

0

-25.0

_50.00 I i _ L i, I L

10.0

i l i k i I I I _ [ I I 1 I L I t I I I I I ] I ] L I i

90 180 270 360

Azimuth, deg

0

Fw

NM

Nw

T

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

OFL i , i i i i i I I I I I I I t I I t I t _ _ I I t I ' ' ' ' ' I j I I

oo30

0 b

0.3_ 0.2

°: ,

0 90 180 270 360

Azimuth, deg

(I) y = -6 in., z = -0.602 in.

Figure 8. Continued.

49
200.0 --

175.0

u, fps 150.0

100.0 I

w, fps

FM

50.0 -

25.0

o

-25.0

i l J J L l i J I i i J l i R i l J i I I _ t _ I J t t I i t i I _ l I

-50"00 90 180 270 360

Azimuth, deg

10._ I

Fw

Nu

Nw

T

1° f

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

3o

01-i i , J _ _ _ h I _ i , L I , I , l , , j , _ J , , J i , , , , , , J J

o.3 0.2

-0 90 180 270 360

Azimuth, deg

(m) y = -8 in,, z = --0.602 in.

Figure 8. Continued.

50
200.0 -

175.0

u, fps 150.0

125.0

100.C

w, fps

Fu

50.0 -

25.0

0

-25.0

l i k L t i I I I I I t I L I k I I I I t L i t i k L I I I t r I I L i

-50'00 90 180 270 360

Azimuth, deg

10._

Fw

Nu

Nw

T

1°- I

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

oo30

0 I

oo30

0 I

0.:3-

0.2

0.1

i i,,ll i iI,ll i i i KIn i i, Ii tllil t_ J I I Ill

00 90 180 270 360

Azimuth, deg

(n) y = -9 in., z = -0.602 in.

Figure 8. Concluded.

51
200.0 -

175.0

u, fps 150.0

125.0

100.0 , t _ , J J _ i [ , , , , , i J , I J , i i J i J L I , J , , , , J , I

w, fps

Fu

50.0 -

25.0

0

-25.0

_50.0-,, _ J,, _ _ J J , _, J L,, ], , i , , L , , I , _ _ _ i J L , J

o 90 180 270 360

Azimuth, deg

10.0

0

Fw 10.0

0

Nu

Nw

T

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

30 '_ ....,_

60_-

0.:3-

0.2

0.1

0{_ i i i i i J J J J t 1 90 180 270 360

Azimuth, deg

(a) y = 0 in., z = 8.278 in.

Figure 9. Velocity and turbulence at station 12 in.

52
200.0-

175.0

u, fps 150.0

125.0

100.0

w, fps

FM

50.0 -

25.0

-25.0

.50.00 _ , , , L , t , I I i _ I , k , , I _ , _ _ , _ _ , I k , L , t , I , I 90 180 270 360

Azimuth, deg

10.01

0_

Fw

Nu

Nw

T

10.0

0

ii

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

30

0 i

30

0 _

0.3 --

0.2

0.1

0' I _ _ I '_'J-I =-i--r_"=_l

90 180 270 360

Azimuth, deg

(b) y = 0 in., z = 7.278 in.

Figure 9. Continued.

53
200.0 -

175.0

u, fps 150.0

125.0

100.0

w, fps

Fu

50.0 -

25.0

0 _.______

-25.0

-50.0 , f J , J J L i I I , , , i L , , i , _ , , , , J i I , i I , , , i , I

0 90 180 270 360

Azimuth, deg

10.0 I

0

Fw

Nu

Nw

T

1° I

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

O_ L I i i i _ L i i I I I i i l I I ] i ] J i I i I ] I I i I i J J I I

0.3--

I I I I I 1 90 180 270 360

Azimuth, deg

(c) y = 0 in., z = 5.278 in.

Figure 9. Continued.

54
200.0 --

175.0

u, fps 150.0

125.0

100.0

w, fps

Fu

50.0 _-

25.0_-

-25.0

.50.00F L L i,, i i LSt0 t i i i i i i180I i t J i i t _ t270I _ i , i i i i L360I

Azimuth, deg

10.0

0

Fw

Nu

Nw

T

10.0

0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

0.3 m

0.2

0.1

%

_ I J I l n _ i L I 1 _ I _ [ I L k l I J J I I

90 180 270 360

Azimuth, deg

(d) y = 0 in., z = 3.278 in.

Figure 9. Continued.

55
100.0 -

75.0

u, fps 50.0

25.0

0

w, fps

Fu

50.0 -

25.0

-25.0

_50.00 J, ,, J , E , I i _ J _, = , , t J _ __ = i _, , I J,,,, _, = I 90 180 270 360

Azimuth, deg

10.0

0

Fw

Nu

Nw

T

2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

Ol , _ J , , I , I i L , t , , , I J I _ , , , J i J = ] , J I t i J _ ,

0.3--

Azimuth, deg

(e) y = 0 in., z = -0.722 in.

Figure 9. Continued.

56
u, fps

w, fps

Fu

50.0 -

25.0

0

-25.0

"50.00

Azimuth, deg

Fw

Nu

Nw

T

10.0

0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

oo30

0 I

°°

30

0 I

0.3_ 0.2

v0 90 180 270 360

Azimuth, deg

(f) y = 0 in., z = -4.722 in.

Figure 9. Continued.

57
200.0 -

175.0

u, fps 150.0

125.0

100.0

50.0 -

w, fps

Fu

25.0

-25.0

J Ji,l,,ll,,,_,J,=l),lL=_, Jl=llll=ltl

-50"00 90 180 270 360

Azimuth, deg

10.0

0

Fw

Nu

Nw

T

10-0 I

0 _

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

\ ,/

0_- J I _ _ J I E I 11 I J J t I ) , I i i j i L i J I I , t i , i _ J i I

0 , , J J , _L_, I _ J J I l , J 1 _ ) , , J _ 1 J I L ) I i J 1

0.3 --

O_

."

00, , J , I , I _ i _ J i J , , I 90 180 270 360

Azimuth, deg

(g) y = 9 in., z = -0.722 in.

Figure 9. Continued.

58
200.0-

175.0

u, fps 150.0

125.0

100.0

w, fps

Fu

50.0 -

25.0

0

-25.0

_L_l_, L_ll,J,lll, [_JtLl,,,iLIL JL,J,I

"50"00 90 180 270 360

Azimuth, deg

10.0

0

Fw

Nu

Nw

T

10-0 t

0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

30

0

60

0.3-

0,2

0.1

-Ilii_ili LIIII_III

o6 90 180 270 360

Azimuth, deg

(h) y = 8 in., z = -0.722 in.

Figure 9. Continued.

59
200.0 -

175.0

u, fps 150.0

125.0

100.0

50.0 -

25.0

z A

w,fps o__-_____

-25.0

" 90 180 270 360

Azimuth, deg

Fu

Fw

Nu

Nw

T

10.0

0 III

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

ooF -_ J __-

0.3 --

0.2

v0 90 180 270 360

Azimuth, deg

(i) y = 6 in., z = -0.722 in.

Figure 9. Continued.

6O
200.0 _-

175.0|

u, fps 150.0/

125.0

100.0

50.0 --

25.0

w, fps 0

-25.0

-50.00''' _ * i i , ,90I _ i i L i i I i180L , i , i i J i =270I i J i , , ,

Azimuth, deg

Fu

, I

360

Fw

Nu

Nw

T

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

oo30

0 I

30

0 i L t i i i i i L i i i i i i i i I L i L i i i i i I i i _ L i I I I I

0.3

0.2_

n _ t J I I t t _ I L I I I I I i i I I I I I I I i 1 I I I t 1 _ L I L

v0 90 180 270 360

Azimuth, deg

(j) y = 4 in., z = -0.722 in.

Figure 9. Continued.

61
150.0 -

125.0

u, fps 100.0

75.0

50.0

w, fps

Fu

50.0 -

Fw

NM

Nw

T

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

Or- I I I I J J J , I I , I , , J _ _ I J , j i i j , L i , _ , , , L , j I

30 'J _'_Z---'_ Y'_

0.3-

0.2

0.1

OoJ i i ' I _ i I I t , , I , , , J ] , I I _ I , , j I t , , i i , , i I 90 180 270 360

Azimuth, deg

(k) y = -4 in., z = -0.722 in.

Figure 9. Continued.

62
Fu

0

Fw

NM

Nw

T

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

30

0 I

0 L, , liilil, f f t i luili, f , i ILIliIll, _ i ,1

0,3-

0.2

0.1-

i i i , L , , L I L _ , , , L i i I i i i , i i i i i i i i i i i , J t

00 90 180 270 360

Azimuth, deg

(1) y = -6 in., z = -0.722 in.

Figure 9. Continued.

63
200.0 -

175.0

u, fps 150.0

/,/ ,

I00,0- J I , J i _ _ t I J , J J , _ , I i J I I J i , J _ I , I _ _ , , J i J

w, fps

Fu

50.0 -

25.0

-25.0

__ J d J i i i i i i J J t J _ i i i i J I J i i J _ J _ i I

-50"00 90 180 270 360

Azimuth, deg

Fw

NM

Nw

T

10.0

0 I

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

f,,

O, J I , _ t , , , I , , , J , _ , , J , , , , , , , , I , , , j , , j j J

60_ ;

0 I _ I I I I I I I I I I I [ I I I I i I I 11 I i , I i i i i I

0.2

0.31 -

o.1

Oo_L_ILJlIILIIJIIIIJ_I_L_LLIJIIIiJ_rl 90 180 270 360

Azimuth, deg

(m) y = -8 in., z = --0.722 in.

Figure 9. Continued.

64
200.0 -

175.0

u, fps 150.0

125.0 -

100.0 i L i i = i J J I i t i J i L i L I i t i = k i _ i I i i , t _ _ L i I

w, fps

F'u

50.0 -

25.0

0

-25.0 -

i , , , ,.,,, [, _ L,, L, _ i J l, I I i t , [ i , _ t t A L L J

-50"00 90 180 270 360

Azimuth, deg

10"0 l

0

Fw

Nu

Nw

T

1° I

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

30

0 f

30

o.3 0.2

0 I

0 90 180 270 360

Azimuth, de.q

(n) y = -9 in., z = -0.722 in.

Figure 9. Concluded.

65
200.0 -

175.0

u, fps 150.0

125.0

100.0'

50.0 _-

25.0

I

w, fps 0 :____

-25.0!

"50.00'''''''' 901'''''''_ 1801,_ _ , , , ,

Azimuth, deg

10.0 t

O'

Fu

270 360

Fw

NM

Nw

T

10.0

0 i 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

60_-

0.3-

0.2

0.1

0 I I I I I I I I I _ I i i i I i i i 1 i I i 1 i i i I 90 180 270 360

Azimuth, deg

(a) y=Oin., z=8.157in.

Figure !0. Velocity and turbulence at station 14 in.

66
200.0 -

175.0

u, fps 150.0 -

125.0

100.0

w, fps

Fu

50.0 -

25.0

0

-25.0

.50.00 , I , , , , J L90I i i J L , I , t180I , t t , J , , _270i , L L , , J t ,360I

Azimuth, deg

Fw

NM

Nw

T

2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

3O

0 I

30

0 J

0.3--

0.2

0.1

0

I L I I I I I

90 180 270 360

Azimuth, deg

(b) y = 0in., z = 7.157 in.

Figure 10. Continued.

67
200.0 -

175.0

u, fps 150.0

125.0

100.0

50.0 -

25.0

w, fps 0

-25.0

-50.00

Fu 10.0

0

,,,,,,,,t,,,_,,_,l_,, LILLLIL_ LL_ L _ LL

90 180 270 360

Azimuth, deg

Fw

NM

Nw

T

10.0

0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

30 ,j,

0.3--

0.2

0.1

O_) J J l L 90 180 270 360

Azimuth, deg

(c) y=Oin., z=5.157in.

Figure 10. Continued.

68
200,0 -

175.0

u, fps 150.0

125.0

100.0 ,L,tL_,,li,lli,,il,,,,ItILl,,_,t,,,l

w, fps

Fu

50.0 -

25.0

0 _.

L i i t k L h i I J i I i i I i J I i i L i J i J i I J i i i I i l i I

"50"00 90 180 270 360

Azimuth, deg

10.0

0

Fw

Nu

Nw

T

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

30

0 I

30

0 I

0.3 m

0.2

0.1

0 90 180 270 360

Azimuth, deg

(d) y = 0 in., z = 3.157 in.

Figure 10. Continued.

69
100.0 -

75.0

u, fps 50.0

25.0

0

w, fps

Fu

50.0 -

25.0

-25.0

"5000''''' '" _ l 901_ _,,,, _ _180]''''' _' _270I ,

Azimuth, deg

10.0

0

IIIIILJl

36O

Fw

Nu

Nw

T

o.3j

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

oo30

/v

0 ' )

O F i i i i J i i r i i i J J J i J t i ___1 i i i i [ i i i i _ i i i I

0.2

0.1

O01L_ _,,It I*l_ kl,, I t11_, _ IIJ I J,,, L, I J r 90 180 270 360

Azimuth, deg

(c) y = 0 in., z = -0.843 in.

Figure 10. Continued.

70
100.0 --

75.0

u, fps 50.0

25.0

0

w, fps

Fu

50.0 _-

25.0

0

-25.0

90 180 270 360

Azimuth, deg

10.0

0

Fw

Nu

Nw

T

10.0

0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

3060_` L _ I __

0 _t

oo30

0 I

0.3-

0.2

0.1_

00 90 180 270 360

Azimuth, deg

(f) y = 0 in., z =-4.843 in.

Figure lO. Continued.

71
u, fps

50.0 -

25.0

0

-25.0

-50.0 Ijj_llllllllljjl[jll_lllJIllFjllllll

w, fps

Fu

50.0 -

25.0

-25.0 -

_5000 _, i ,, , _ i t i, J, , , _ i I i _ i _ , J _ i I i, , , , J _ J I

• 90 180 270 360

Azimuth, deg

Fw

Nu

Nw

T

10-0 I

0 t

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

0 ( I I I I 1 I I J 1 1 I I ] I I _ z I I I I i I L I 1 I I I I I I I I I I

0.3

PL I I I J I I J 1 , I I J I I , J ] , , , , , , , , J, , , , , , I I [

00 90 180 270 360

Azimuth, deg

(g) y = 0 in., z = -6.843 in.

Figure lO. Continued.

72
200.0 _-

175.0

u, fps 150.0

125.0

100.0 [ill[{lll:[til{lllllliiI_[lilLIll{ll

w, fps

Fu

50.0 --

25.0

o

-25.0

I I I f I l J ill Ilttlll}lllllll flIJl f fllll

-50"00 90 180 270 360

Azimuth, deg

10.0

0

Fw

Nu

Nw

T

10.0 I

0 L __

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

6o30

0

oo30

0

0,3-

0.2

0.1

00_ i ill,l _r _,,ir J 90 180 270 360

Azimuth, deg

(h) y = 9 in., z =-0.843 in.

Figure 10. Continued.

73
200.0 -

175.0

u, fps 150.0

125.0

100.0

w, fps

Fu

50.0 -

25.0

0

-25.0

-50.00 90 180 270 360

Azimuth, deg

Fw

NM

Nw

T

10.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

Ol'- I I I l i I I I I I I i I I I I I l l I I I I l I t I i i I i i I i l

l I l i I ] l i I I I I I I I

0.3 m

0.2

0.1

00 90 180 270 360

Azimuth, deg

(i) y = 8 in., z = -0.843 in.

Figure lO. Continued.

74
200.0,-

175.0

u, fps 150.0

125.0

100.0

w, fps

Fu

50.0 -

25.0!

0

-25.O

_50.00 I _ , L i i L , I L i , , , , L , I , , i , , t , _ i , , , i k , , , I 90 180 270 360

Azimuth, deg

10.0

0

Fw

Nu

Nw

T

10.0

0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

0.3 --

0.2

0.1

o;

I I I I L L I _ L I t I I I I I I I I I I I I I I I I I I I I I I

90 180 270 360

Azimuth, deg

(j) y=6in., z=-0.843 in.

Figure 10. Continued.

75
200.0 -

175.0

U, fps 150.0

125.0

100.0

50.0 --

25.0

-25.0

J i J i i J 1 _ 1 J 1 i _ t J l i I I J _ L i J _ J 1 l i [ J J J _ J I

"50"00 90 180 270 360

Azimuth, deg

Fu

Fw

Nu

Nw

T

10.0

0 i

1 2 3 4 5 6 7 8

II

9 10 11 12 13 14 15 16

Orders

o.3 0.2

_-i I 1 1 ILl i I 1 1 1 i I ) i 1 1 _ 1 I_I 1 1 i i i _ 1 Z _ I

% 90 180 270 _360

Azimuth, deg

(k) y = 4 in., z = -0.843 in.

Figure 10. Continued.

76
150.0 -

125.0

u, fps 100.0

75.0

50.0

50.0 -

w, fps

ELI

25.0

-25.0

i L L J _ _ _ L I i i i J I I i 1 I L _ k L L I L L I i i i i & L k I I

-5000 90 180 270 360

Azimuth, deg

10.0

Fw

Nu

Nw

T

10.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

30

0 I

oo30

0 b

0.3-

0.2

0.1

I I L t _ k I 1 I L i I I _ t i I 1 l J J _ L _ t L i t I L J I J I L ] _L

v0 90 180 270 360

Azimuth, deg

(]) y = -4 in., z = -0.843 in.

Figure lO. Continued.

77
150.0 -

125.0

u, fps 100.0

75.0

50.0 lllilIilJtlLJill1111111111111111111i

w, fps

Fu

50.0 -

25.0

o

-25.0

I L I , , J l _ ] , , I , _ , , , I , _, , , , , _i, , _ , _ , l l I

"50"00 90 180 270 360

Azimuth, deg

Fw

Nu

Nw

T

10.0)

O'

I 2 3 4 5 6 7 8 9 10 11 12 '13 14 15 16

Orders

0.3--

0.2

0.1 _

JJ,,,,,,i,,,,,tiil,illiiJlllilll ii, J

00 90 180 270 360

Azimuth, deg

(m) y = -6 in., z = -0.843 in.

Figure 10. Continued.

78
200.0 -

175.0

u, fps 150.0

125.0

100.0 :_LI ilJlll

50.0 -

25.0

w, fps 0

-25.0 =

Fu

i i i , i i i h I L i L , , I , i I i L i h i i L i [ L i L , i L t i t

-50"00 90 180 270 360

Azimuth, deg

10.0

i i

Fw

Nu

Nw

T

10.0

0

Figure 10. Continued.

79
200.0 -

175.0

u, fps 150.0

125.0

100.0

w, fps

Fu

50.0 -

25.0

0

_50.00 _,,, _ I, , I,, i,,, _, r _ ,._J,, J, _ I _,,,, _, , J 90 180 270 360

Azimuth, deg

10.0

0

Fw

Nu

Nw

T

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

_'\_

30 ...../,

OF , , _ i , t _ , J , , , L t , I = l I .L , I l

0.3-

0.2

0. I l = i I _ t i I i i I J I i f J I i J_ _ I J J J i t J J i i = I _ I I

o 90 180 270 360

Azimuth, deg

(o) y = -9 in., z = -0.843 in.

Figure 10. Concluded.

8O
200.0 -

175.0

u, fps 150.0

125.0

100.0

w, fps

Fu

50.0 -

25.0

0

-25.0

i L i i L L i i I 1 t i L L L L L (L i i i t L J i l t l L t i i i L I

_50 "00 90 180 270 360

Azimuth, deg

10.0

0

Fw

NM

Nw

'T

10.0

0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

30

0

oo30

0

0.3-

0.2

0.1

, I

"0 90 180 270 360

Azimuth, deg

(a) y = 0 in., z = 8.037 in.

Figure 11. Velocity and turbulence at station 16 in.

81
200.0 -

175.0

u, fps 150.0--

125.0

100.0 IILkldlI[JIIIIJIJJIL2_IIIILJLJJI[Jl

w, fps

Fu

50.0 -

25.0

0

-25.0

.50.0. _ L _ _ _ _ L _ I _ I _ i i i i L l L L L i L L i i I, _ L _ I _ _ _ I

0 90 180 270 360

Azimuth, deg

10.0

0

Fw

Nu

Nw

T

1°- I

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

60

01- j j I L l j j _ / t _ J i J k , J I , i J , , _ J 1 r _ , i J J _ _ , I

60_-

ObJ I J I i J J J } J _ _ , , , J I I , _ I I _ I _ _ I I i i J J I I J ]

0.3--

0.2

0.1

001 J , j i i I 90 180 270 360

Azimuth, deg

(b) y = 0 in., z = 7.037 in.

Figure 11. Continued.

82
200.0 _-

175.0

u, fps 150.0 --_-__

125.0

100.0 IIIIIIIlllljlitl_l_lll_ltlllttjtl_jl

50.0 _-

25.0

w, fps 0

-25.0

-50.00

Fu 10.0

0

I I _ I I i i i I J J = L i,, i I i i I J i i I I I i i = _ = i i = I

90 180 270 360

Azimuth, deg

Fw

Nu

Nw

T

10.0

i

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

oo30

0

oo30

0

0.3--

0.2

0.1

90 180 270 360

Azimuth, de q

(c) y = 0 in., z = 5.037 in.

Figure 11. Continued.

83
200.0 _-

175.0

u, fps 150.0

125.0

100.0 _IIJLlifJliLJLJIILllJ=JLIiII]'i*JJlIJ)

w, fps

Fu

50.0 -

25.0

_50.00 I I _ _ I I , _ I I I I I I I I t I i I I I , , , , I I I I i I J _ , i 90 180 270 360

Azimuth, deg

10.0

0

Fw

Nu

Nw

T

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

0_- i i J i _" /i i l i t j j _ _ t t I _ j i i i , i i I j j j i i j j t I

0.3--

0.2

o1_ A

- I l J J I t I I I ] [ I I I I E l J I L _ I I I I I l I t I i I I I t

00 90 180 270 360

Azimuth, deg

(d) y = 0 in., z = 3.03? in.

Figure l 1. Continued.

84
100.0 -

75.0

u, fps 50.0

25.0

0

w, fps

Fu

50.0 -

25.0

o

-25.0

-50"00 90 180 270 360

Azimuth, deg

10._0 , II

U

Fw

Nu

Nw

T

10.0

0 _ 2 3 4 5 6 7 8 9 10 11 12 13 +4 15 16

Orders

°o30

0 _

+o30

0 I

0.3_ 0.2

0.1

0 I

- 0 90 180 270 360

Azimuth, deg

(e) y = 0 in., z = -0.963 in.

Figure 11. Continued.

85
100.0 -

75.0

u, fps 50.0

25.0

0

50.0 -

25.0

-25.0 -

_50.00 J R i J _ , _ , I J _ i i i _ i J J i ___, i J J J _ J i i i , i , _ i i 90 180 270 360

Azimuth, deg

Fu

Fw

Nu

Nw

T

10.0

ii , , I

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

0

0.3-

o ol

0_) , J I , , I I I .l _ L , _ I , J J i t , I I _ L _ I I , I j , t I t I I 90 180 270 360

Azimuth, deg

(f) y = 0 in., z = -4.963 in.

Figure 11. Continued.

86
90.0 -

I

65.0

u, fps 40.0

15.0

-10.0 I

50.0 -

w, fps 0

-25.0'

-50.00 ' t L L ' ' ' ''90 I ' l I _ l

Fu

180 270 360

Azimuth, deg

10.:

Fw

NM

Nw

T

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

30

0 _i

30

0 ._r_-_._-r-'_-_ _ _ __.._A______, _._,._._. __,,__,_ 1

0.3,-

0.2

/

0.1

n

"0 90 180 270 360

Azimuth, deg

(g) y = 0 in., z = -6.963 in.

Figure 11. Continued.

87
200.0 -

175.0

u, fps 150.0

125.0

100.0

w, fps

Fu

50.0 -

25.0

o

-25.0

-50.0: _ i , , , , _ , ] _ , , , , , J , ] , , L J J J , j I , , , , , _ _ , I

0 90 180 270 360

Azimuth, deg

10.0 I

0 II

Fw

Nu

Nw

T

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

0.3--

02

01

O' I l _ , J ,1 .L I 1 J i i t J I l I I I 1 l I I I I I I I 1 i I i I _ J I

0 90 180 270 360

Azimuth, deg

(h) y = 9 in., z = -0.963 in.

Figure 11. Continued.

88
200.0 -

175.0

u, fps 150.0

125.0

100.0

50.0 -

w, fps

FM

25.0

-25.0

i i J i i i t i I L i L i i L i l i i i i i J i i t [ t J J L i I i : I

"50"00 90 180 270 360

Azimuth, deg

10.0 l

0 / ,

Fw

Nu

NW

T

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

oo30

0 I

30

0 I

0o3 h

0.2

0.1

%

I L I I I 1 _ i I i I I L I I Ivi

90 180 270 360

Azimuth, deg

(i) y = 8 in., z = -0.963 in.

Figure 11. Continued.

89
200.0 -

175.0

u, fps 150.0

125.0

100.0

w, fps

Fu

50.0 -

25.0

o

-25.0

-5000 J I = J l = I I I J J L = I I t I J I ] * :' l J t t = , , * , _ _

• 90 180 270

Azimuth, deg

10.0

0

I

360

Fw

Nu

Nw

T

10.0

0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

30 ,

0 J _ i I

30 _ '_j_

0.3 b

0.2

O0 J r I I [ _ I i i I I J ] I I I J f i J J ! ] i I l I I J 1 I J I I [ I 90 180 270 360

Azimuth, deg

(j) y=6in., z=-O.963in.

Figure 11. Continued.

90
u, fps 100.0

75.0

50.0

150.0 -

,,,,,,,,I,ll,lll_t_ll,l,,,I,,,, fllll

w, fps

Fu

50.0 -

25.0

-25.0

-50.0: , i i f i f t f I i i f , _ _ _ _ I i i f i i i f f I i i i _ i f , , I

0 90 180 270 360

Azimuth, deg

Fw

Nu

Nw

T

10.0

0

1

IIII

2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

0.2

0.1j

00 90 180 270 360

Azimuth, deg

(k) y = 4 in., z = -0.963 in.

Figure 1l. Continued.

91
150.0 -

125.0

u, fps 100.0

75.0

50.0

w, fps

Fu

Fw

Nu

Nw

T

10.0 I

0' I a

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

30 _' jv

0_- i i i j _ i , , t J i , i , , i i J , _ i , , , , , I , , , , , j , i )

60_-

OEJ _ _ , , J J , I , J , , , _ , , ) [ , / t t ] i ] J I I j , I I t m j

0.3-

0.2

0(_i _ _ , L I _ I I J J I i I I J , I I I L , I , _ _ I , J I i i J , , ) 90 180 270 360

Azimuth, deg

(1) y = --4 in., z = -0.963 in.

Figure 1 l. Continued.

92
150.0 -

125.0

u, fps 100.0

75.0

50.0

w, fps

Fu

50.0 -

25.0

0

-25.0

i,iJ_ h_,lkl tL,,_Ll_tLll,tJll,_,,, JI

-50"00 90 180 270 360

Azimuth, deg

10.0

0

Fw

Nu

Nw

T

10.0

0

0.3

0.2

0.1

i 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

oo30

0

oo30

0

i i i i I t i i I J i L i i i I i I i I i L i i I i I i L i J I L i I

00 90 180 270 360

Azimuth, deg

(m) y = -6 in., z = -0.963 in.

Figure 1l. Continued.

93
200.0 -

175.0

u, fps 150.0

125.0

100.0-- _ _ , _ _ _ _ _ ,,_ _ J _l

w, fps

Fu

50.0 -

25.0

0

-5000_ _ J J''''' J' I'''''''' I,,,,,,, J r " 90 180 270 360

Azimuth, deg

lOOi

Fw

Nu

Nw

T

loof

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

60 E- _ r\ "

O_i , i , i _ i _ J L , J J , , J _ I ,___J__ , _ , J l , , , , , , , , l

Ok_,,,_ _,1_,_,,,,, I J l_ JJLLiiL,J,,Illl

0.3--

0.2

00 90 180 270 360

Azimuth, deg

(n) y = -8 in., z = --0.963 in.

Figure 1 I. Continued.

94
200.0 -

175.0

u, fps 150.0,

125.0

100.0

50.0 -

w, fps

Fu

25.0

0

-25.0

.50.0OI [ I I l 1 [ I 1 f I t f l f I I 1 I I f f ( I i I I l l I ' ' f f I I 90 180 270 360

Azimuth, deg

10.0 f

/ , ,

Fw

Nu

Nw

T

10.0

0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

30

0

30

0 , i, _ Lli,ll,, _L I L,I,,,,, LL,I,J, , I,, I I

0.2

0.1

0 I I I I I I I I

0.3 m

I,, I L,,, LI L LLIL,,,ILL J,,,, I I

90 180 270 360

Azimuth, deg

(o) y = -9 in., z = -0.963 in,

Figure l l. Concluded.

95
200.0 -

175.0

u, fps 150.0

125,0i

100.0

50.0 -

w, fps

Fu

25.0

0

-25.0

90 180 270 36O

Azimuth, deg

1° f

Fw

NM

Nw

T

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

30 _

0.3 h

02

0.1

0 1_=I I 1 I i I , , J ,, _-,_-__'-_'--_1

0 90 180 270 360

Azimuth, deg

(a) y = 0 in., z = 7.917 in.

Figure 12. Velocity and turbulence at station 18 in.

96
200.0 -

175.0

u, fps 150.0

125.0

100.0 Llklllll[llllLIIIfllllltlltllllllllf

50.0 -

w, fps

Fu

25.0

0

-25.0

i , , , l L , , [ I _ I , J I t I [ , I i t I L 1 _ 1 L , , I L i _ i I

-50"00 90 180 270 360

Azimuth, deg

10.0 /

0 L

Fw

Nu

Nw

T

10.0

0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

30

0

oo30

0 I

0.3--

0.2

0.1

%

I I I l L I L I I I I I i I I I I L I I

90 180 270 360

Azimuth, deg

(b) y = 0 in., z = 6.917 in.

Figure 12. Continued.

97
200.0 -

175.0

u, fps 150.0 -

125.0

100.0 I I I I t I i = t i i i , , , , , I t r , i , j i L I i i , j i , i , I

50.0 --

W, fps

Fu

25.0

0

-25.0 -

.50.00 I I i i, I, I I I i i i I _ i, I i i _ t t , I L 1 , , i j i i i _ I

90 180 270 360

Azimuth, deg

10-0 I

0'

Fw

Nu

Nw

T

10.0 I

0 / Ill I

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

0 i i l I i i I 1J i i i I I I i I t l I_j l i I i i l i i i i i J

60

0.3-

0.2

0.1

0'- I 1 i I I l L i_ 1 I I I I I I 1 "-"t'_'-_i I I I I I I I i i I i 1 1 I i r

-13 90 180 270 360

Azimuth, deg

(c) y=Oin., z=4.917in.

Figure 12. Continued.

98
200.0 -

175.0

u, fps 150.0

125.0

100.0

w, fps

Fu

50.0 -

25.0

0

-50.00 I J''''' '90I, _,,,,, ,180I ,

i t L h _ I I I L I t _ I L t L I

270 360

Azimuth, deg

Fw

Nu

Nw

T

10-0 I

0 i 2 3 4 5 6 7 8 9 10 li 12 13 14 15 16

Orders

ooao

o _

30

o f

0.3-

0.2

0 90 180 270 360

Azimuth, deg

(d) y=0in., z=2.9]?in.

Figure 12. Continued.

99
u, fps 50.0

25.0

C

w, fps

50.0 -

25.0

-50.00 _ 90 180 270 360

Azimuth, deg

Fu

Fw

Nu

Nw

T

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

60_- _oF_ _ . _ _...... _d__

_ ^_v ___7_ _*v. •, _

0.3-

0.2o

90 180 270 360

Azimuth, deg

(c)y = 0 in.,z = -I.083in.

Figure 12. Continued.

100
75.0

u, fps 50.0

25.0

0

w, fps

Fu

50.0 -

25.0

0

_50.0, t I I, Jl, I t,,, t,, LI t ,, J, IA,L,,, ,,, L, I

o 90 180 270 360

Azimuth, deg

10.0

0

Fw

Nu

Nw

T

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

30

0 I

oo30

0 L

0.3-

0.1

, i L i _ i _ _ I _, , i , t, _ L L , L _ i k _ , 11, , L , , , , I

"0 90 180 270 360

Azimuth, deg

(f) y = 0 in., z = -5.083 in.

Figure 12. Continued.

IOl
100.0 -

75.0 _

u, fps 50.0

25.0

0

w, fps

Fu

50.0 --

25.0

-25.0 _-

] I I l i I I I I i t I I I I 1 J I I J--I I I I i J J I t I l I _ J

"50"00 90 180 270

Azimuth, deg

10.0

0

, I

360

Fw

Nu

Nw

T

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

0b_ _ _ , , J i _ I i i i i J _ i J I i J J t i j L j I i j i i j j j _

30 /_/_

0_ I J = L I _ J , I i I I i L L i i I j _ i i _ i i I j t i j i i _ i

.3,-

0.1

I , _ , , J J _ I I , = , , _ _ , ] J _ -L_-J i J = ] i j i i i i i i J

00 90 180 270 360

Azimuth, deg

(g) y = 0 in., z = -7.083 in.

Figure 12. Continued.

102
200.0 -

175.O

u, fps 150.0

125.0

100.0

w, fps

Fu

50.0 -

25.0

o

-25.0

_50.00 , i , i i , , i 90I I i i , J , , L180I i , , t i i i i270I , , , t , , , ,360I

Azimuth, deg

10.0

0 "'

Fw

Nu

Nw

T

10"0 l

0 ----'-_--_

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

oo30

0 i

6030

0.3 m

0.2

0.1

%

I I I l I I I I I I I I I I I I I I I I 1 I i 1 I I I I I l 1 l

90 180 270 360

Azimuth, deg

(h) y '- 9 in., z = -1.083 in.

Figure 12. Continued.

103
200.0 -

175.0

u, fps 150.0

125.0

100.0

w, fps

Fu

50.0 -

25.0

-25.0

-50"00 90 180 270 360

Azimuth, deg

10.0

| , ,

Fw

Nu

Nw

T

10.0 f

0 L __

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

OFJi111J[i]lJllll'J I [JJi_L$]IfJ] lil]J

0.3-

0.2

Azimuth, deg

(i) y = 8 in., z = -1.083 in.

Figure 12. Continued.

104
200.0--

175.0

u, fps 150.0

125.0

100.0

w, fps

Fu

50.0 -

25.0

o

-25.0

_ _ , _ _ i i J i i L i I k i i L i i I i i _ L i L L i J t i i t k t I

-50"00 90 180 270 360

Azimuth, deg

10.0

0

Fw

Nu

Nw

T

10.0

0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

30

0

30

0

o.3 0.2

00 90 180 270 360

Azimuth, deg

(j) y = 6 in., z = -1.083 in.

Figure 12. Continued.

105
u, fps 100.0

75.0

50.0

150.0 -

w, fps

Fu

50.0 -

Fw

Nu

Nw

T

10.0

0 I

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

6Or- A/_ _ _.

0.3-

0.2

O.I - y_/X

90 180 270 360

Azimuth, deg

(k) y = 4 in., z = -1.083 in.

Figure 12. Continued.

1116
150.0;

125.oI

u, fps 100.0

75.0

50.0

w, fps

Fu

50.0 _-

25.0

0_

-25.0

_50.00 L L, _ i = L i I i i i i L i L i I i L i , i i i , [ i _ L i i i i _ I 90 180 270 360

Azimuth, deg

10.0

0

Fw

NM

Nw

T

10.0

0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

30

Oh+ I + , + + I + l J + + J + + + + J + + + I + + + + I + + + + + + + + l

30

0 I

0.3-

0.2

0.1-

, I 1 i I 1 1 1 1 [ l I 1 1 l l l L [ I , , , , , 1 , I l , , t , , , , [

00 90 180 270 360

Azimuth, deg

(1) y = --4 in., z = -1.083 in.

Figure 12. Continued.

107
150.0 -

125.0

u, fps 100.0

75.0

50.0

w, fps

Fu

50.0 -

25.0

-25.0

"50"00 90 180 270 360

Azimuth, deg

10.0

Fw

Nu

Nw

T

10._ I ,

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

60_

Ol-, I I z f I J r I J J J J J i i j t , i i i _ _ , _ I , , , , , , , , I

0.3_ 0.2

O.l_X__ _"

0_'''''''' 9_0' ' ' ' ' ' ' _1;0 ' ' ' ' ' ' ' '2_OL ' ' ' ' ' ' J_360

Azimuth, deg

(m) y = -6 in., z = -1.083 in.

Figure 12. Continued,

108
150.0-

125.0

u, fps 100.0

75.0

50.0

50.0 -

25.0

0-

w, fps _

500--J i L i I i L L I I I i i I i I L I I i _ L L _ L L I L I I J J I _ I I

o 90 180 270 360

Azimuth, deg

Fu 10.0

0 "

Fw

Nu

Nw

T

10.0

0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

°°

30

0 _ i i i i _ L i i i i i i I _ B L i i i _ i I i _ L i i i i i t

oo30

0 ]

0.3_ 0.2

o._ _-./

0 i i I

-0 90 180 270 360

Azimuth, deg

(n) y = -8 in., z = -1.083 in.

Figure 12. Continued.

109
150.0 -

125.0

u, fps 100.0

75.0

50.0

w, fps

Fu

Fw

Nu

Nw

T

10.0

0 1 2 3 4 5 6 7 8 9 '10 11 12 13 i4 15 16

Orders

0i- I J t J _ i I I i i , , , i i I i t__ i J t J t I i J i _ _ i _ i

60_- ,

0.3-

0.2

0.1

O

90 180 270 360

Azimuth, deg

(o) y = -9 in., z = -1.083 in.

Figure 12. Concluded.

110
200.0 --

175.0

u, fps 150.0

125.0

100.0 IIIIIIhllllLIllllJllllllllllllllllll

50.0 _-

25.0

w, fps 0

-25.0

-50.0(

Fu 10.0

0

90 180 270 360

Azimuth, deg

Fw

Nu

Nw

T

10.0 I

0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

30

0 _

30

0 I

0.3

O"I I

0.1

0 90 180 270 360

Azimuth, deg

(a) y= 0 in,, z = 7.796 in.

Figure 13. Velocity and turbulence at station 20 in.

111
200.0 -

175.0

u, fps 150.0

125.0

100.0

w, fps

Fu

50.0 -

25.0

0

-25.0

.50.00 I I I J _ J i I I L J l l J l ] I l L I i ¢ r I J I l J I J = J ¢ I , I 90 180 270 360

Azimuth, deg

10.0 I

0'

Fw

Nu

Nw

T

10.0

0 iii j

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

0 , , I _ I _ , , ] J , , , ,IL J J 1 t ,'_--_---L_, J 1 , J,_ , , , J_

Oii j J i i j i I t, J, , _ _ J I _, J r _ _ , , I , J J , i,J J i 1

0.3-

0.2

0.1

1

v0 90 180 270 360

Azimuth, deg

(b) y = 0 in., z = 6.796 in.

Figure 13. Continued.

112
200.0 -

175.0

u, fps 150.0

125.0

100.0

50.0-

w, fps

Fu

25.0

0

-25.0

L , : J , _ i _ [ 1 , , , x J t J 1 , t , i t t t t [ , l l _ J i , , I

-50"00 90 180 270 360

Azimuth, deg

10.0

0

Fw

Nu

Nw

T

10.0

0 i 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

oo30

0

0.3-

0.2

0.1

I I I I t I I }

00 90 180 270 360

Azimuth, deg

(c) y = 0 in., z = 4.796 in.

Figure 13. Continued.

113
200.0 -

175.0

u, fps 150.0

125.0

100.0 I i I l i i i i 1 i I I I i I I I i I i i i l I I i I I i i i I i l i I

50.0 -

25.0

w, fps 0

-25.0' f_--_-____-

_50.00,,,,,,,, i,,,, _, _, I,, _ _ _ _ J _ I,,,, _,,, i 90 180 270 360

Azimuth, deg

Fu 10.0

0

Fw

Nu

Nw

T

10.0

0 m

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

30

0 I i I I I I i I I t l I I i_l I I l J t I i i l i i I I

0,3 --

0.2

n_, Eli _J,, ,i J J, ,r, J J I

_o 90 180 270 360

Azimuth, deg

(d) y = 0 in., z = 2.796 in.

Figure 13. Continued.

114
I00.0-

75.0

u, fps 50.0

25.0

0

w, fps

Fu

F'w

Nu

Nw

T

10.0 I

0L

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

oo30

0 J

30

0 i

0.3--

0.2

o.1 /

90 180 270 360

Azimuth, deg

(e) y = 0 in., z = -1.204 in.

Figure 13. Continued.

115
100.0

75.0

u, fps 50.0

25.0

0

50.0 -

w, fps

Fu

25.0

0--

_50.0, J J _ J L i r t I _ _,, J J J L I J i _ _,,,, I J f , i , , , j I

0 90 180 270 360

Azimuth, deg

10.0

0

Fw

Nu

Nw

T

10.0 I

0 r II

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

01-J J , I _ I I I I J i , _ , , , , I _ , _ _ L i , i I j , L i r , , i I

30 _/_ _/_.

OP' J ' i , _ i I I J _ , J , i J j I i i__ j i _ i , I i j i i _ i i j I

0.3--

0.2

90 180 270 360

Azimuth, deg

(f) y = 0 in., z = -5.204 in.

Figure 13. Continued.

116
100.0

75.0

I

u, fps 50.01

25.0

w, fps

Fu

50.0 -

25.0

0_

-25.0

_ _ J i J _ i t J J J _ I J J J J J J J _ J J J _ J ] _ J J J i J b b I

-50"00 90 180 270 360

Azimuth, deg

Fw

Nu

Nw

T

10.0

0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

oo30

0 I

oo

0.3,-

0.2

I

0.1

, i , L , i , L I i _, , , , i , I , , i _ , , , _ I , _ _ s , I , i 1

v0 90 180 270 360

Azimuth, deg

(g) y = 0 in., z = -7.204 in.

Figure 13. Continued.

117
200.0 -

175.0

u, fps 150.0

125.0

100.0

w, fps

Fu

50.0 -

25.0

-25.0

90 180 270 360

Azimuth, deg

10.0

0 i

Fw 10'0 f

0"

1 2

Nu

Nw

T

3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

60_-

0 i J, _ I _ i i I z I,, J J I__L___, i I,, J , J , _ I I

0.3-

0.2

0.1

I J I l J J J I l L I I I I I ] I I I L J i I I I I I I J J

O0 90 180 270 360

Azimuth, deg

(h) y = 9 in., z = -1.204 in.

Figure 13. Continued.

118
200.0 --

175.0

u, fps 150.0

125.0

100.0

50.0 -

25.0

w, fps 0

-25.0

-50.00

Fu 10.0

0

i, i _ i i _ i,,, _ _ _, I [, t,,, t , , L J , , L , , _ , I

90 180 270 360

Azimuth, deg

Fw

Nu

Nw

T

10.0_

0 L

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

oo30

0 J

30

0 I

0.3--

0.2

0.1

0"-- [ I i [ I I | l l I i

o 90 180 270 360

Azimuth, deg

(i) y = 8 in., z = -1,204 in,

Figure 13. Continued.

119
200.0 -

175.0

u, fps 150.0

125.0

100.0

50.0 -

25.0

w, fps 0

Fu

-25.0 -

_50.0-= I I j I , J _l I I I I I I I I j j j J I ..j , , , ,

0 90 180

Azimuth, deg

10.0 f

O'

270 360

Fw

Nu

Nw

T

0.3--

0.2

0.1

3 90 180 270 360

Azimuth, deg

(j) y = 6 in., z = -1.204 in.

Figure 13. Continued.

120
150.0 -

125.0

u, fps 100.0

75.0

50.0 L _ _ _ _ , , L I i , t L _ , , J ( L J , , _ _ i , f , _ _ _ L L , i f

w, fps

Fu

50.0 -

25.0

o

-25.0

.50.00 L , _ i , , t [ L L , , _ _ i t L L , t , t J , _ i _ L , t , , , L I 90 180 270 360

Azimuth, deg

10,(

Fw

Nu

Nw

T

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

0 LL,,,,, _lll J , J_ , _1 l, t, _ , , J I , hiiiJ I I I

60__ I

30

0

0.3_ 0.2

0"1in

"0 90 180 270 360

Azimuth, deg

(k) y = 4 in., z = -1.204 in.

Figure 13. Continued.

121
150.0 -

125.ff

u, fps 100.0

75.0

50.0

50.0 -

w, fps

Fu

25.0

-25.0

_50.00 , , , , J , , , I J r _ _ J J J _ I , , _ I i , t , I , _ J , , , , , l 90 180 270 360

Azimuth, deg

10.0 I

0'

Fw

NM

Nw

T

10.0 f

0' i

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 _16

Orders

0_- i I _ I , J I J J J J _ J _ r I , J _ ,., I J I J I t j , , j , , j i l

60_- _

0.3_ 0.2

Azimuth, deg

(1) y = -4 in., z = -1.204 in.

Figure 13. Continued.

122
150.0 -

125.0

u, fps 100.0

75.0

50.0 i i J t i L I I J I L l J L I I I [ L t i t I I I L I i I I t t L L 1 I

w, fps

Fu

50.0 -

25.0

0

-25.0 -

500-- f , J , I t f I I I f r I r r f J } r _ f I J f I I I , I I _ l l 1 _ J

---'-0 90 180 270 360

Azimuth, deg

10.0

0

Fw

Nu

Nw

T

10.0

0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

30

0

30

0

0.3--

Azimuth, deg

(m) y = -6 in., z = -1.204 in.

Figure 13. Continued.

123
150.0 -

w, fps

Fu

Fw

Nu

Nw

T

10"0 I

0 I

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

0_I' i II llil''il' J I, I, I l,,, II_ ill

Ok J , J _ J .*, , { , , J J J J _ , r , , , _ , , , j i , , , , , j _ _ }

0.3-

(n) y = -8 in., z = -1.204 in.

Figure 13. Continued.

124
200.0 -

175.0

u, fps 150.0

125.0 L i i L i , L L I L i i _ i i i L i j i L L J L i I i L L , , , , ,

100.0 I

w, fps

Fu

50.0 -

25.0

0

-25.o

, , , , , i t , [ , L , , J , l , [ 1 t , _ h J _ , [ t I _ t t L , , J

"50'00 90 180 270 360

Azimuth, deg

Fw 10._

1 2 3 4 5 6 7 8

Nu

Nw

T

9 10 11 12 13 14 15 16

Orders

3O

0 , L _ , , , I

30

0_-, , , , , , , t [ , _ J L L _ , , I , , , , i _ , , I i , t i _ , , L I

0.3 --

0.2

0.1-

90 180 270 360

Azimuth, deg

(o) y = 9 in., z = -1.204 in.

Figure 13. Concluded.

125
200.0 -

175.0

u, fps 150.0

125.0

100.0 _ , , , t i L J I _ i i J J I i i I , J J , , z i i J f J , _ i , , i I

50.0 -

w, fps

Fu

25.0

0

-25.0 _-

-50.0- , , , , , , , , t i J J A _ , J i I , , , , , , , J I J , , , J I L _ I

0 90 180 270 360

Azimuth, deg

10.0 f

0'

Fw

Nu

Nw

T

10.0 f

0 _

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

30 "

OF J J i , , , , , J J , J i E , J i ] , __L, , , , , I , , , , , , , , I

0.3-

0.2

0.1

J

00 90 180 270 360

Azimuth, deg

(a) y = 0 in., z = 7.676 in.

Figure 14. Velocity and turbulence at station 22 in.

126
200.0 --

175.0

u, fps 150.0

125.0

100.0

50.0 --

w, fps

FLI

25.0

0

-25.0 "

"00 g0 180 270 360

Azimuth, deg

10.0

0

Fw

Nu

Nw

T

10._ i,

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

30

0 1

30

0 _

0.3-

0.2

0.1

I t_

"0 90 180 270 360

Azimuth, deg

(b) y=Oin., z=6.676in.

Figure 14. Continued.

127
200.0 -

175.0

u, fps 150.0

125.0

100.0

50.0 -

w, fps

Fu

25.0

0

-25.0 -

o 90 180 270 360

Azimuth, deg

1° t

Fw

Nu

Nw

T

10.0

0

1 2 3 4 f) 6 7 8 9 10 11 12 13 14 15 16

Orders

0FJ J J L i , t _ t _ i i J J , i i I i i _ i i _ _ i I i I i i i r E i

0.3-

0.2

0.1

,- I I I I _ I I I 1 I I I I I I _ i I l t I I I l i I J 90 180 270 360

Azimuth, deg

(c) y = 0 in., z = 4.676 in.

Figure 14. Continued.

128
200.0 -

175.0

u, fps 150.0

125.0

100.0 tliiiilJllJlJ[llllllllllLLtll{ll[lll

50.0 -

w, fps

Fu

25.0

0

-25.0

-50.00 k h I I I

10.0

0

90

i I J L i , [ L i L i i i L _ I L _ i L i i L i [

180 270 360

Azimuth, deg

Fw

Nu

Nw

T

10.0

0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

30

0 J

60

0.3

0.2_

0"1 I

00 90 180 270 360

Azimuth, deg

(d) y = 0 in., z = 2.676 in.

Figure 14. Continued.

129
150.0 -

125.0

u, fps 100.0

75.0

50.0

w, fps

Fu

50.0 _-

25.0

0

-25.0

_50.00 J J , , _ _,, I _ J J t L i t L I t _ ¢ _ _ L _ _ I _ L L i i _ _ _ ]

90 180 270 360

Azimuth, deg

10.0

0 J

Fw

Nu

Nw

T

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

6O

0.3-

0.2

0.1

I i i = l _ _ , 1 = = I = J J J I J _ I t i I I J i I = _ I I I I J ] J

O0 90 180 270 360

Azimuth, deg

(e) y = 0 in., z = -1.324 in.

Figure 14. Continued.

130
150.0--

125.0

u, fps 100.0

75.0

50.0

50.0 --

25.0

w, fps 0

-25.0

-50.00

10.0

Fu

0

II_lillllLI IlllllllllLLlltlJl [ILIlIt

90 180 270 360

Azimuth, deg

Fw

NLI

Nw

T

10.0

0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

30

0

o.3 0.2

0.1

0 I

0 90 180 270 360

Azimuth, deg

(f) y = 0 in., z = -5.324 in.

Figure 14. Continued.

131
150.0 -

125.O

u, fps 100.0

75.0

50.0

w, fps

Fu

50.0 -

25.0

-25.0 -

.50.00, _,,, L, L I J, _ i,, _, I , _,, J i J _ I j j,, _ j _ _ l 90 180 270 360

Azimuth, deg

Fw

Nu

Nw

T

10.0

0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

30 <

0 .± : _ I J J J J L I I I I , J t , , J _ , l i I t i i i j L J

01--,I , , , L L I [ t I i L _ L _ i I L i _ _ i i _ L ( i _ i i i i _ _ 1

0.3

0.2_

o.1 

Azimuth, deg

(g) y = 0 in., z = -7.324 in.

Figure 14. Continued.

132
200.0 -

175.0

u, fps 150.0

125.0

100.0

w, fps

Fu

50.0 -

25.0

-25.0

-50.0 i J i , i i i L I L = i = = i h i I _ t i i i i L i I i i L _ _ = = i I

0 90 180 270 360

Azimuth, deg

Fw

Nu

Nw

T

1° f

1 2 3 4 5 6 7 8 9 10 11 12 13 14 i5 16

Orders

°o30

0 I

0 I

0.3-

0.2

0.1

J ; I I I I 1 _ I I I 1 I 1 I } l

00 90 180 270 360

Azimuth, deg

(h) y = 9 in., z = -].324 in.

Figure 14. Continued.

133
200.0 -

175.0

U, fps 150.0

125.0

100.0 l ,11 i i I i i I i i i I i i i i I i i l l I , l I I t I i I i U

w, fps

Fu

50.0 --

25.0

o__

-25.0

_50.00 _ , ,, i _ _, J i i , i i i i i t J , i,, i t i [ _ I i _ i _ _ _ J

90 180 270 360

Azimuth, deg

10-0 f

| ||1

Fw

Nu

Nw

T

10-0 f

0 L

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

01- l I I q i I I i [ , I i i i I t , I l l l t t t i i I i I i i i l i i I

0 I i I I i i i i 1 l I I i i l i i l l 1 i i i i i 11 i i I I i i i i I

0,3--

0,2

0,1

O_

O 90 180 270 360

Azimuth, deg

(i) y = 8 in., z = -1.324 in.

Figure 14. Continued.

134
200.0 -

175.0

u, fps 150.0

125.0

100.0

50.0 -

w, fps

Fu

25.0

-25.0 -

o 90 180 270 360

Azimuth, deg

10.0

0

Fw

Nu

Nw

T

10.0

0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

3O

0 I

0.3--

0.2

0.1

L- L L _ i I L t I I I I k L I I h I I L I I I

00 90 180 270 360

Azimuth, deg

(j) y = 6 in., z = -1.324 in.

Figure 14. Continued.

135
150.0 -

125.0

u, fps 100.0

75.0

50.0

w, fps

Fu

50.0 -

0

Fw

Nu

Nw

T

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

OF _ i _ J _ _ _ I I i r i J J J , , t , J J__ I _ i , I J t r J _ J , J

0.3-

0.2

0.1

0o 90 180 270 360

Azimuth, deg

(k) y = 4 in., z = -1.324 in.

Figure 14. Continued.

136
150.0 -

125.0

u, fps 100.0

75.0

50.0

50.0 -

w, fps

Fu

Fw

Nu

Nw

T

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

oo30

0 )

30

0.3-

0.2

0.1

90 180 270 360

Azimuth, deg

(I) y = -4 in., z = -].324 in.

Figure 14. Continued.

137
150.0 -

125.0

u, fps 100.0

75.0

50.0

w, fps

Fu

50.0 -

25.0

-25.0

1 _ J t l 1 1 l I 1 l i 1 l 1 1 1 ] l .! L _ i i i ] I _ _ l _ 1 I i J {

"50"00 90 180 270 360

Azimuth, deg

10.0[

l i .

Fw

Nu

Nw

T

10.0 I

0 _

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

6Or-- _-_/'_

OF r I I J I r I J J I I I I I I I I J _ l__ , _ _ I I I _ I , , J J i i J

O_ i I I I I _ i J ] I J J J I _ J _ I t t , LL ± I l l I I t I I = J J 1

0.3-

0.2

o

I J i i i I I _ ] i I _ J _ I i I } r J .L, , J _ J } J J t _ _ J , _ I

O0 90 180 270 360

Azimuth, deg

(m) y = -6 in., z = -1.324 in.

Figure 14. Continued.

138
150.0 -

125.0

u, fps 100.0

75.0

50.0

w, fps

Fu

50.0 -

25.0

0

-25.0

, _ , _ _ _ _ _ I _ L _ J _ J L t 1 _ i i L j _ j I t _ I L t I I I 1 i

-50"00 90 180 270 360

Azimuth, deg

10.0

, ii _ .

Fw

Nu

Nw

T

10.0

0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

°o30

0 _

oo30

0 L

0.3_ 0.2

0.1

0 I

0 90 180 270 360

Azimuth, deg

(n) y = -8 in., z = -1.324 in.

Figure 14. Continued.

139
200.0 _-

175.0

u, fps 150.0

125.0

100.0

w, fps

Fu

50.0 -

25.0

0

i I , I.l _ I f J , J _ , , J , J J _ , : i r , , i ] j j j _ I , , L )

00 90 180 270 360

Azimuth, deg

Fw

Nu

Nw

T

10.0 t

0 [ " '

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

3 _r._ -

i ,

0.3--

0.2

o.1

001 ' J 'i I J i 1 ill Ill J fill, ,i J_ Jjj J , i j ii_] 90 180 270 360

Azimuth, deg

(o) y = -9 in., z = -1.324 in.

Figure 14. Concluded.

140
200.0 -

175.0

u, fps 150.0

125.0

100.0 i i i i t J i L I J , L i _ = i i I i _ , i _ t L k I _ L , L , i i , I

w, fps

Fu

50.0 -

25.0

0

-25.0 -

t i L t i i i ] I i L t i i i i i I i i i i L _ i L I L i i i J L i i I

-50"00 90 180 270 360

Azimuth, deg

10.0

0

Fw

Nu

Nw

T

10.0

0 i 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

30

30

0 I

0.3 --

0.2

0.1

v0 90 180 270 360

Azimuth, deg

(a) y = 0 in., z = 7.555 in.

Figure 15. Velocity and turbulence at station 24 in.

141
200.0 -

175.0

u, fps 150.0 -----------

125.0,

100.0 ' ' ' ' J ' _ ' J _ ' J _ t _ L _ ( L _ i , i _ i i L i L _ i i i = ,i I

50.0 -

25.0

w, fps 0

-25.0

-50.0(

Fu

_ ' ' I _ , J _ ) I i I , , , L ,.) J , , _ , , , , I , , i i _ j _ j I

90 180 270 360

Azimuth, deg

10-0 I

0 | J'

Fw

Nu

Nw

T

10-0 f

0 =

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

60_A_ . ^

60

0.3-

0.2

0.1

0'_

O 90 180 270 360

Azimuth, deg

(b) y = 0 in., z = 6.555 in.

Figure 15. Continued.

142
200.0 -

175.0

u, fps 150.0

125.0

100.0

50.0 --

w, fps

FM

25.0

0

-250

1 B I I L L n n L i I _ J t I t t [ L I I J I L n t [ i I I J I l J L I

"50"00 90 180 270 360

Azimuth, deg

10.0

0

Fw

Nu

Nw

T

10.0

0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

oo30

0 }

oo30

0 _

0.3-

0.2

0.1

0-_ L t

0 90 180 270 360

Azimuth, deg

(c) y = 0 in., z = 4.555 in.

Figure 15. Continued.

143
200.0 -

175.0

u, fps 150.0

125.0

100.0 I , i i _ ,J _ r , , , J L I J J I _ , _ , , , J _ I , z , j L j , i I

w, fps

Fu

50.0 --

25.0

0

-25.0

-50.0(

10.0

0

/_ J ] I" L l I t i ( i I l = _ i _ I 1

90 180 270 360

Azimuth, deg

Fw

Nu

Nw

T

--_I_ |

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

0.3_ 0.2

-0 90 180 270 360

Azimuth, deg

(d) y = 0 in., z = 2.555 in.

Figure 15. Continued.

144
150.0 --

125.0

u, fps 100.0

75.0

50.0 IL_IIIIII]LJltlLIIIIILI[]klLLIJI]I_I

50.0 -

w, fps

Fu

25.0

0-

-25.0 -

"50"00 90 180 270 360

Azimuth, deg

10.0

0 ' '

Fw

NM

Nw

T

10.0

0 | ii

i 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

0 i , , , J i b I I , L L , , , , _ [ , t L I I i _ I t , , , i , t I ,

30

0

0.1

, _ _ L , , , _ I t L , , i , , , 1 t L , i , , t i [ , L _ i , , , , I

v0 90 180 270 360

Azimuth, de q

(e) y = 0 in., z = -1.445 in.

Figure 15. Continued.

145
150.0 -

125.0

u, fps 100.0 _

75.0

50.0

w, fps

Fu

50.0:-

25.0

0

.50.00 J _ i i _ _ i i I i i L i J I J i I J , I i J J J i I i i _ J _ , L i J 90 180 270 360

Azimuth, deg

10.0

Fw

Nu

Nw

T

10.0

0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

60F /_j_,g//_./_ _ _ _^A ,_ _^

01- i _ i i J .l i i I J i i i J i J , I i i i i i , J t I i J J , _ J J _ I

0[-.1 _ J J A _ I I I i J I I L J l i [ i J J l I _ J I I t I i I I L L L I

0.1 _._'V'v

0 90 180 270 360

Azimuth, deg

(f) y = 0 in., z = -5.445 in.

Figure 15. Continued.

146
150.0 -

125.0

u, fps 100.0

75.0

50.0

iL

w, fps

Fu

50.0 -

25.0

0

-25.0

_ = L L L L i i IL = i = i _ L i I i i i i L i i i I i i _ i l I I J I

"50"00 90 180 270 360

Azimuth, deg

Fw

Nu

Nw

T

1° I

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

60

30

0 I

3

1

0.3

0.2_

0.1

0 I

0 90 180 270 360

Azimuth, deg

(g) y = 0 in., z = -7.445 in.

Figure 15. Continued.

147
200.0 -

175.0

u, fps 150.0

125.0

100.0

w, fps

Fu

50.0 -

25.0

0 --_____j__-

-25.0

-50'00 90 180 270 360

Azimuth, deg

10.0

0

Fw

Nu

Nw

T

10.0

0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

30 '_

0 _ _ I

0.3 --

0.2

0.1

0o 90 180 270 360

Azimuth, deg

(h) y = 9 in., z = -1.445 in.

Figure 15. Continued.

148
200.0 --

175.0

u, fps 150.0

125.0

100.0

w, fps

Fu

50.0 -

25.0

o _--,.______f---

-25.0

-50"00 90 180 270 360

Azimuth, deg

10.0

0

Fw

NM

Nw

T

10.0

0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

30

0

30

0

0.3-

0.2

0.1

00, i L _ L _ L , L , I ] L L I L L , , , , h L I ,_I 90 180 270 360

Azimuth, cleg

0) Y = 8 in.,z=-1.445 in.

Figure 15. Continued.

149
200.0 -

175.0

u, fps 150.0

125.0

100.0

50.0 -

25.0

w, fps 0

-25.0

-50.0

Fu 10.0

0

t , , J J , ] J t J , , , , , , t J _ , r , _ J _ J I ]

90 180 270

Jlllll

Azimuth, deg

, l

360

Fw

Nu

Nw

T

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

J _ I J J l I J I I I i I I I I J I J ] l f I I I I J _ f l 1

0.3 --

0.2

O0JiJ,_, , , It JJ , L I I 90 180 270 360

Azimuth, deg

(j) y = 6 in., z = -1.445 in.

Figure 15. Continued.

150
150.0 -

125.0

u, fps 100.0

75.0

50.0

w, fps

Fu

50.0 -

25.0

o

-25.0

_50 00 90 180 270 360

Azimuth, deg

10.0

0

Fw

Nu

Nw

T

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

. _ Orders

30

0 ' I

oo30

b

o.3_ 0.2

O i L L h i i _ I

-0 90 180 270 360

Azimuth, deg

(k) y = 4 in., z = -1.445 in.

Figure 15. Continued.

151
150.0 -

125.0

u, fps 100.0

75.0

5O.0

w, fps

Fu

50.0 -

25.0

0

-25.0

-50.0(

10.0

90 180 270 360

Azimuth, deg

0

Fw

Nu

Nw

T

0,3--

0.2

Ol

J i L t , i i J J i J i J i J J J J i i L i J J i i J _ I t t i K i J i

"0 90 180 270 360

Azimuth, deg

(1) y = -4 in., z : -1.445 in.

Figure 15. Continued.

152
200.01-_

I

175.oI

u, fps 150.0

125.0

100.0

w, fps

Fu

50.0 --

25.0

0

-25.0

_ t i _ , I _ I I i L L L , L J , I I _ I L L , , i I i , , , L , , L I

-50"00 90 180 270 360

Azimuth, deg

10.0

0

Fw

Nu

Nw

T

10-0 I

0' 1 2 3 4 5 6 7 8' 9 10 11 12 13 14 15 16

Orders

30

0 I

0.3-

0.2

0.1

n I I i I I t J t ] i i , J i t l i [ , , I J i I I i I i i J [ [ i i [ I

v0 90 180 270 360

Azimuth, deg

(m) y = -6 in., z = -1,445 in.

Figure 15. Continued.

153
200.0 -

175.0

u, fps 150.0

125.0

100.0

w, fps

Fu

50.0 -

25.0

0

-25.0 :_-______

" 0 90 180 270 360

Azimuth, deg

'°2f

Fw

Nu

Nw

T

lOO1

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

0_- , , i , , J _ , [ l _ , J L = , I J , , _L _ r I I I I I I 1 t _ _ I I J

30 _/_/-,_'-'

ObJ I I r IRl_ I I J _ltJ_ JI IJ JA J _LLI II J Jl J I'l

0.3--

0.2

o.1__--_-___

00,_,JJJJl tJlJ_JllllJI f J IllllJ,LIJ_lJf 90 180 270 360

Azimuth, deg

(n) y = -8 in., z = -1.445 in.

Figure 15. Continued.

154
200.0 -

175.0 !

u, fps 150.0

125.0

100.0

w, fps

Fu

50.0 _-

25.0

0_

.25.0 ! - ___._.__

_50.0-, _ ,, _ ,, _ [,, L L _ _ J, [ L, J, L _ j, I _,, I i, L _ I

o 90 180 270 360

Azimuth, deg

10.0

0

Fw

Nu

Nw

T

10.0

0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

30

0

30

0

0.3-

0.2

0.1

i [,,,, ,11,iL,_li,l,_,,t_LltILIL,'_l

O0 90 180 270 360

Azimuth, deg

(o) y = -9 in., z = -1.445 in.

Figure 15. Concluded.

155
200.0 -

175.0

u, fps 150.0

125.0

100.0 J i I , J , , _ J L J J J , J J I I , , J J , _ i , J i J _ , f J , _ I

50.0 _-

25.0

w, fps 0

-25.0

_5000J " I ' I I I 1 1 90[ I I I J J 1 J I 180J I L 1 } i I [ i270J I

Azimuth, deg

Fu 10.0 I

0 l

111111

360

Fw

Nu

Nw

T

10.0 I

01

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

30

0

30 /_'_-_'.

0_ I t I t _ = = _t t t t t I I t t t 1 = 1 1 t 1 t } t 11 = t I I I I I ]

0.3 --

0.2

0.1

90 180 270 360

Azimuth, deg

(a) y = 0 in., z = 7.435 in.

Figure 16. Velocity and turbulence at station 26 in.

156
200.0 -

175.0

u, fps 150.0

125.0

100.0 =11111LL(,llllkll(I I IIIhlL]S111LLlll

w, fps

Fu

50.0 -

25.0

0

-25.0 :-

LIIIIIIL[IILILILIIt IIIIIIIIIIILIIIII

"50"00 90 180 270 360

Azimuth, deg

,°2f

Fw

Nu

Nw

T

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

30

0F_,,_,,,,_I i LbtLIJ'ILIILIL_I

oo30

0 }

0.3--

0.2

0.1

v i-T i I

00' 90 180 270 360

Azimuth, deg

(b) y = 0 in., z = 6.435 in.

Figure 16. Continued.

157
200.0 -

175.0

u, fps 150.0

125.0

100.0

50.0 -

25.0

w, fps 0

i

-25.0=

-50.00

Fu 10.0

0

90 180 270 360

Azimuth, deg

Fw

Nu

Nw

T

10.0

0 i 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

0.3--

0.2

0.1

%

L t L t t I

90 180 270 360

Azimuth, deg

(¢) y = 0 in., z = 4.435 in.

Figure 16. Continued.

158
200.0 --

175.0

u, fps 150.0

125.0

100.0

w, fps

Fu

50.0 -

25.0

-25.0o _ _--d___ _---_'f_'_

t t l 1 i i = i [ L _ i t _ i i 1 1 1 t I I L t _ t I _ L L I L I I _ I

"00 90 180 270 360

Azimuth, deg

_°_f

Fw

Nu

Nw

T

1°_f

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

30

0 tl J , _ i,, _ _ I _ I,,,, i t J

0 i J , I

0.3_ 0.2

°-, _,

°o oo ,_o _o _oo

Azimuth, deg

(d) y = 0 in., z = 2.435 in.

Figure 16. Continued.

159
150.0 -

125.0

u, fps 100.0

75.0

50.0

w, fps

Fu

50.0 -

25.0

0

_ I I I _ _ _ I I I J I i J _ J l ] i k I J I J I I 1 _ i l t i i J i I

mS0 &

00 90 180 270 360

Azimuth, deg

Fw

NM

Nw

T

10.0

0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

OPt i I,l , J I I ,, t,_I, i JL_ ,,, Jii, i ,, J JJ,i

0.3-

0.2

Ol

O01JiJilllJJllfJLLflliIL_JLliIIililJl 90 180 270 360

Azimuth, deg

(e) y = 0 in., z = -1.565 in.

Figure 16. Continued.

160
150.0 --

125.0

u, fps 100.0 _

75.0

50.0 I , _ L , t _ i [ i L _ , _ I L , I i , j i i L , i ( , , , L , L , L I

w, fps

Fu

50.0 -

25.0

0

.500() _ I _, I i L, I,,, I, i,, r i,, _ _ L j, I,, L L i L, _ 1 " 90 180 270 360

Azimuth, deg

10.0

Fw

Nu

Nw

T

10.0

0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

ObL L b I , L i , l , , L 1 1 , , J I l , J L L t l i L , , , , _ _ , , I

oo30 _1

0 L [ [ I L

0.3--

0.2

, , L L , , , I I i , I , , t t L [ L i L L L , L L I 1 i 11 L , L , I

00 90 180 270 360

Azimuth, deg

(f) y = 0 in., z = -5.565 in.

Figure 16. Continued.

161
150.0 -

125.0

u, fps 100.0

75.0

50.0

w, fps

Fu

50.0 -

25.0

0

-25.o

.500-J, I _ J i, i 1J J, J r, J J I , J , _ _ _ J J I, J J, , , J , I

• 0 90 180 270 360

Azimuth, deg

10"0ll_ _

0

Fw

Nu

Nw

T

10"0 f

0 i "2 3 4 5 6 7 8 9 '10 11 12 13 14 15 16

A/_ , Orders

Ot- I _ L l K I I J t I I L 1 I I J I 1 I I _ I I _ I I I j I j I I I t

0,3--

0.2

o.1

06, , , I , , _ , f , _ , _ , i J l i , J J J I J , l 1J , J _ I l , J I 90 180 270 360

Azimuth, deg

(g) y = 0 in., z = -7.565 in.

Figure 16. Continued.

162
200.0 -

175.0

u, fps 150.0

125.0

100.0

w, fps

Fu

50.0 -

25.0

0

-25.0

I i z _ I I t I I _ I i I I I _ I _ z I _ I I t I } I I l t t I I I I

"00 90 180 270 360

Azimuth, deg

Fw

Nu

Nw

T

10.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

30

0 I

oo30

0 I

0.3 r

0.2

0.1

0o

[ I I L [ I I I L I I I I ]

90 180 270 360

Azimuth, deg

(h) y = 9 in., z = -1.565 in.

Figure 16. Continued.

163
200.0;

175.01

u, fps 150.0

125.0

100.0

_:----____

w, fps

Fu

50.0 -

25.0

o

-25.0 L

_5Og 00 90 180 270 360

Azimuth, deg

10.0

0 '

Fw

Nu

Nw

T

10.0

0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

30 J\

0.3--

0.2

0.1

J',,_

(3,

vO 90 180 270 360

Azimuth, deg

(i) y = 8 in,, z = -1.565 in.

Figure 16. Continued.

164
200.0,-

175.0

u, fps 150.0'

125.0

100.0

50.0 -

w, fps

Fu

25.0

o

-25.0

.50.00 I , , L , , , t90( , i i , _ _ L L180I , L , , , , , ,270I , h J , _ I , i360I

Azimuth, deg

10.0

0

Fw

Nu

Nw

T

10.0 I

0

i 2 3 4 5 6 7 8 9 10 11 12 13 i4 15 16

Orders

30

0 I

30

0 I

0.3 --

Azimuth, deg

(j) y = 6 in., z = -1.565 in.

Figure 16. Continued.

165
125.0

u, fps 100.0

75.0

50.0

150.0 -

w, fps

Fu

50.0 -

25.0

o

-25.0

"uv-_' 0 90 180 270 360

Azimuth, deg

10.0

0

Fw

NM

Nw

T

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

0

60 _- ' /_

0.3-

0.2

0.1

180 270 360

Azimuth, deg

(k) y = 4 in., z = -1.565 in.

Figure 16. Continued.
150.0 -

125.0

u, fps 100.0

75.0

50.0 ILIlllLllllllLIIlllll[_llllJlllllllJ

50.0 -

25.0

w, fps 0

"50"00 90 180 270 360

Azimuth, deg

10.0

Fu

Fw

Nu

Nw

T

10.0

0 i 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

0_-_ i _ _ , , i l I _ , I r , i r , I , I r i , , J , I , , r , , , , , I

oo30

0 I

0.3-

0.2

0.1

"0 90 180 270 360

Azimuth, deg

(I) y = --4 in., z = -1.565 in.

Figure 16. Continued.

167
150.0

125.0

i

u, fps 100.0

75.0

50.0

50.0 i

25.oi

w, fps 0

Fu

-50"00 90 180 270 360

Azimuth, deg

10.0

0

Fw

Nu

Nw

T

10"vt i_ 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

30 ,

0.3-

0.2

00 90 180 270 360

Azimuth, deg

(m) y = -6 in., z = -1.565 in.

Figure 16. Continued.

168
200.0 -

175.0

u, fps 150.0

125.0

100.0

w, fps

Fu

50.0 -

25.0

0

-25.o

-50.0- i L i i k L , L I L _ t L L , J i I i i L J i i _ L I _ , _ I i _ i L I

0 90 180 270 360

Azimuth, deg

1

0._n _ it

Fw

Nu

Nw

T

10.0 I

O'

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

oo30

0 _

oo30

0 I

0.3--

0.2

o.1

, i j ] L I i i = [ I I I t I L I L I , I I I = I I t [ L I [ L I I I I J

00 90 180 270 360

Azimuth, deg

(n) y = -8 in., z = -1.565 in.

Figure 16. Continued.

169
200.0 -

175.0

u, fps 150.0

125.0

100.0

w, fps

Fu

50.0 -

25.0

0

-25.0 _-._

.500_ i , J J,,, t I J J I _ _ I J r t, J, .I I,,, I = J J i I , i , t

" 0 90 180 270 360

Azimuth, deg

Fw

NM

Nw

T

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

0.2

t I I l _ J I I I I I i J I I I I I I i Z J l I I i I I I I l _ I I I J t

00 90 180 270 360

Azimuth, deg

(o) y = -9 in., z = -1.565 in.

Figure 16. Concluded.

170
200.0 -

175.0

u, fps 150.0 _

125.0

100.0 i i i i i i i , I i i L _ i i L i I _ t i i i J _ i I i i l J i i i t t

w, fps

Fu

50.0 -

25.0

0

-25.0

.50.0(_ I I I I I t L J i L t I I I I I I I L L t I I I I I I _ L t I _ L I J f 90 18O 270 360

Azimuth, deg

10.0

0

Fw

Nu

Nw

T

10.0

0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

oo30

0 t

30

Ok_,,,,,,,,l ,,,_,111 iLLiJ tl _I

0.3--

0.2

0.1

J

00 90 180 270 360

Azimuth, deg

(a) y = 0 in., z = 7.315 in.

Figure 17. Velocity and turbulence at station 28 in.

171
200.0 -

175.0

u, fps 150.0

125.0

100.0

50.0 -

25.0

w, fps 0

-25.0 __

Fu

-50.0-'' '' J' _ , I J I, L J J, _ ] J I, J t I I, r J,, ,, r, , J

0 90 180 270 360

Azimuth, deg

10.0

0

Fw

Nu

Nw

T

10-0 f

III I

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

60_--

0r J J I J.J _ , , I , _ , I I I J _ _ i_, _ t I i _ _ , , , , i t

0.3--

0.2

0.1

I

00 90 180 270 360

Azimuth, deg

(b) y=0in., z=6.315in.

Figure 17. Continued.

172
200.0 --

175.0

u, fps 150.0

125.0

100.0

50.0 -

25.0

w, fps 0

-25.0 ___

-5000'' t I I' _'' 901r r, _,,, =180}''''''' '270I , ,

Fu 10.0

0

Azimuth, deg

Iflll

360

Fw

NM

Nw

T

10.0

01 2' 3 4 5 6 7 8 9 10111213141516

Orders

30

0

30

0

0.3-

0.2

0.1

IlllLLI I

90 180 270 360

Azimuth, deg

(c) y = 0 in., z = 4.315 in.

Figure 17. Continued.

173
200.0 -

175.0

u, fps 150.0

125.0

100.0

w, fps

Fu

50.0 -

25.0

0

-25.0

-50.0

______ = i ______1 i ,, ___I___-_-1 =, ' ]-J '' '''

90 180 270 360

Azimuth, deg

Fw

Nu

Nw

T

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

30

0 I

0.3--

0.2

0.1

00 90 180 270

Azimuth, deg

(d) y=0in,, z=2.315in.

Figure 17. Continued.

174
150.0 -

125.0

u, fps 100.0

75.0

50.0

50.0 -

w, fps

Fu 10.0

0

Azimuth, deg

Fw

Nu

Nw

T

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

60

0.3-

0.2

0.1_--

0 T- _ L = t i h I L I I l t I 1 I i L I I = I L I i L i I L I t I I i I l 1

o 90 180 270 360

Azimuth, deg

(e) y = 0 in., z = -1.685 in.

Figure 17. Continued.

175
150.0 -

125.0

u, fps 100.0

75.0

50.0

50.0 _-

25.0i

w, fps 0

t I I t J i l I I ' J _ ' I ] J I 1 I J _ I I i t 1 1 I _ l j t i , i_ 150 I

00 90 180 270 360

Azimuth, deg

Fu

Fw

Nu

Nw

T

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

O_--L L L _ L L t t I t L l t L I L _ I L _ _ l L I t I 1 I 1 _ I I I t I 1

3060__/_/_-,-_,S/'V'J__

0_. J * I * l l ] = I ' ' J ' ' I ' J J _ i J I I J I t j 1 = j * , l i = I

0.3-

0.2

001J J I,_,l,,,,, J I ll,_,, i i ill=_,,,,j i l

90 180 270 360

Azimuth, deg

(f) y = 0 in., z = -5,685 in.

Figure 17. Continued.

176
150.0 -

125.0

u, fps 100.0

75.0

50.0

50.0 --

25.0

w, fps 0

-25.0

-50.00

Fu

] * ; ; ] J J J J ] J J J I J J I J J, J * J J } [ J J l l J ) J _ J

90 180 270 360

Azimuth, deg

Fw

Nu

Nw

T

10.0

0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

6o30

0

30

0

0.3-

0.2

J

0.1

I I L t I I _ L I k L ] I [ t I I I I t I I , I I I I L L * t I I [ I I

_0 90 180 270 360

Azimuth, deg

(g) y = 0 in., z = -7.685 in.

Figure 17. Continued.

177
200.0 -

175.0

u, fps 150.0

125.0

50.0 -

w, fps

Fu

25.0

0

-25.0 -

"50"00 90 180 270 360

Azimuth, deg

Fw

Nu

Nw

T

10.0 f

O'

I 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

60 /_

30

0 I-'I ' ' J i _ _ , , ( J I I , I j j j ) , j , j i i i _ )

0.3

0.2

0.1

0 lllllJ, llIllll

90 180 270 360

Azimuth, deg

(h) y = 9 in., z = -1.685 in.

Figure 17. Continued.

178
200.0 -

175.0

u, fps 150.0

125.0

100.0 _LlilltilLJILl]Jll]ILi_lllit_l{¢Lll

w, fps

Fu

50.0 -

25.0

0

-25.0

-50.0 o 90 180 270 360

Azimuth, deg

Fw

Nu

Nw

T

1 2 3 4 5 6 7 8 9 10 1-1 12 13 14 15 16

Orders

30

0 I

oo30

0 i

0.3--

0.2

0.1

%

I I I I I I t 1 L L L I I I L L I

9O 180 270 360

Azimuth, deg

(i) y = 8 in., z = -1.685 in.

Figure 17. Continued.

179
200.0 -

175.0

u, fps 150.0

125.0

100.0

w, fps

Fu

50.0 -

25.0

-25.0

I L ( L, i I I I J ] I I I t I I S I _ _ I I £ I i J I I 2 I I 1 t 1 I _

"50"00 90 180 270 360

Azimuth, deg

III ii

Fw

Nu

Nw

T

1 2 3 4 5 6 7

m J

8 9 10 11 12 13 14 15 16

Orders

0.3--

0.2

O0 I I I _' L _ _90 180 270 360

Azimuth, deg

(j) y = 6 in., z = -1.685 in.

Figure 17, Continued.

180
150.0 -

125.0

u, fps 100.0

75.0

50.0

w, fps

Fu

50.0 -

Fw

Nu

Nw

T

0.3

0.2

0.1

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

30

0 J

oo30

0 f

ilLIIIIlllil]lLI LIllililJl(L

"0 90 180 270

Azimuth, deg

(k) y = 4 in., z = -1.685 in.

llll]lll

360

Figure 17. Continued.

181
150.0 -

125.0

u, fps 100.0

75.0

50.0

w, fps

FM

50.0 -

25.0

0

-25o

-50. ''''''' '90 180 270 360

Azimuth, deg

Fw

Nu

Nw

T

10.0

i

0 1 2 3 4 5 '6 7 '8 9 10 11 12 13 14 15 16

Orders

30 _^j_

0_- i J _ i i i _ i ] i J _ i j i i j I r j t i t j _ i j _ i j j i i j j I

0.3-

0.2

90 180 270 360

Azimuth, deg

(1) y = --4 in., z = -1.685 in.

Figure 17. Continued.

182
200.0 -

175.0

u, fps 150.0

125.0

100.0 IIII IIIIIJI

w, fps

Fu

50.0 -

25.0

0

-25.0

90 180 270 360

Azimuth, deg

10.0

0

Fw

Nu

Nw

T

10.0

0

1 2 3 4 5 6

i

7 8 9 10 1i 12 13 14 15 16

Orders

30

0 I

0.3--

0.2

0.1

L 1 h t _ h i l [ t L l L h i i i [ I , l + i t i l I i L t l J L l i 1

90 180 270 360

Azimuth, deg

(m) y = -6 in., z = - 1.685 in.

Figure 17. Continued.

183
200.0,-

175.0

u, fps 150.0

125.0

100.0

w, fps

Fu

50.0 _-

25.0

0

-25.0 _c_j. _,.a,j.__._._._ _.Av,_ _

_50.00 J,., J, .,t, I, i J _, L, J l _,, , , J , I I , , L , i J J l I 90 180 270 360

Azimuth, deg

10.0 I

0'

Fw

Nu

Nw

T

10.0

0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

0.3--

0.2

0.1 ____

0(_ L _ _ _ _ _ t _ I _ _ _ I L _ _ _ I _ _ 1 I 1 I I _ I t ,J I t 1 1 1 1 I 90 180 270 360

Azimuth, deg

(n) y = -8 in., z = -1.685 in.

Figure 17. Continued.

184
200.0 -

175.0

u, fps 150.0

125.0

100.0

50.0 --

w, fps

Fu

25.0

0

-25.0

I I i i I I i L I L i i t _ L i _ I i i I t t J b h J I i i J I t I I I

"00 90 180 270 360

Azimuth, deg

10.0

0 " '

Fw

Nu

Nw

T

10.0

0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

oo30

0 _

oo30

0 f

0.3-

0.2

0.1-

t3n

"0 90 180 270 360

Azimuth, deg

(o) y = -9 in., z = -1.685 in.

Figure 17. Continued.

185
200.0 -

175.0

u, fps 150.0

125.0

100.0

50.0 -

25.0

W, fps 0

-25.0

Fu

0 I J 1 ] i I I I

"50 I I J l J i , I i i , , , J I , J J , , , , , I , J

" 90 180 270

Azimuth, deg

10.0{

0 f

, I

360

Fw

Nu

Nw

T

10.0

0 "

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

0_- , , , ' , , , , I , ,. _ L 1 11 I J t _ _ _l L I _ J ] J J L , Z I r i [

30

0 i,,l_ i,IJ JJJ iii11t i,,i, J iI J _L_ i,i, J

0.3 --

0.2

0.1

0_) t t t t _ _ t t t _ l t t 1_--_-_ 90 180 270 360

Azimuth, deg

(a) y=Oin., z=7.194in.

Figure i 8. Velocity and turbulence at station 30 in.

186
200.0 -

175.0

u, fps 150.0

125.0

100.0

w, fps

Fu

50.0 -

25.0

0

-25.0 -

_50.00 L , i , I i i _ I _ i t , _ _ i t I i t J i i i i i I J i L i i i i f I 90 180 270 360

Azimuth, deg

10.0 I

0 L

Fw

Nu

Nw

T

10.0

0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

30

0 I

30

0 J i i i i iIit _ i LLLll

0.3--

0.2

0.1

1 I 1 I L I I ] I ] I L L I _ I I

v0 90 180 270 360

Azimuth, deg

(b) y = 0 in., z = 6.194 in.

Figure 18. Continued.

187
200.0 -

175.0

u, fps 150.0

125.0

100.0

50.0 -

w, fps

Fu

25.0

0

-25.0 ___ ....

.50.00 J,,,, t I _ (_ i i L _ _ i _ I _ , , _ _ , ,

90 180

Azimuth, deg

270 360

Fw

Nu

Nw

T

10.0 t

O I ...

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

0 I J I L L k __ I, I j I j J i l _ t I I L _ _ j _ _ I j J _ I, t j I l [

60

0.3-

0.2

0.1

0_) 90 180 270 360

Azimuth, deg

(c) y=Oin., z=4.194in.

Figure 18. Continued.

188
200.0 -

175.0

u, fps 150.0 :-

125.0

100.0

w, fps

Fu

50.0 -

25.0

L I I i J _ i L i I I : t I I I I I _ 1 t _ t I L I I I i I I I 1 I L I

"00 90 180 270 360

Azimuth, deg

10.0

0

Fw

Nu

Nw

T

10.0

0

1 2 3 4 5

3O

6 7 8 9 10 11 12 13 14 15 16

Orders

I i i i i

0.3-

0.2

0.1

00 90 180 270 360

Azimuth, deg

(d) y=Oin., z=2.194in.

Figure 18. Continued,

189
150.0 -

125.0

u, fps 100.0

75.0

50.0

50.0 -

25.0

w, fps 0

.50.00'' _ _ _ J _, I, _ _ t,, , J I,, _ J, J i, I J, J,,,, _ ) 90 180 270 360

Azimuth, deg

Fu

Fw

Nu

Nw

T

10.0

0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

30 _

ObJ , I , J J J _ I , , , , J I I J I _ _ _ j , j , i ) , j j , _ , , , )

30 _

OP, , , , , J , , I , , , , , , , A l ij i , , j , , l , , , _ : , , , ]

0.3-

0.2

0.1 _"

90 180 270 360

Azimuth, deg

(e) y = 0 in., z = -1.806 in.

Figure 18. Continued.

190
150.0 -

125.0

u, fps 100.0

75.0

50.0

w, fps

Fu

Fw

Nu

Nw

T

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

0 i i i L t b I L I L _ I I L I I I [ k _ I J t I , I I L I i _ I I L I I

oo30

0 r

0,3--

0.2

0.1 _

00- 90 180 270 360

Azimuth, deg

(f) y = 0 in., z = -5.806 in.

Figure 18. Continued.

191
150.0 -

125.0

u, fps 100.0

75.0'

50.0

50.0 -

25.0

w, fps 0

-25.o

I , j 1 1 k 1 1 1 l l _ I l t i t ' I J _ _ i J ' ' ' }

"50"00 J _' I _ k h '90 180 270 360

Azimuth, deg

Fu l° LjL__

Fw

Nu

Nw

T

10.0 l

O' ' I

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

60c- _

O_ _ i 1 _ i L L _ I t t I l , ' J J 1 I._ I ' L 1 ' 1 1 _ 1 : 1 1 1 l 1 1

0,3--

0.2

O0 90 180 270 360

Azimuth, deg

(g) y = 0 in., z = -7.806 in.

Figure 18. Continued.

192
200.0 -

175.0

u, fps 150.0

125.0

100.0

w, fps

Fu

50.0 -

25.0

0

-25.0 =

_50.00 i t i _ _ t L i I = i i i i i i i I i L i i i L i i [ L L L _ i t i i I 90 180 270 360

Azimuth, deg

Fw

Nu

Nw

T

1° I

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

oo30

0 1

30

0 b

0.3--

0.2

0.1

0o

I I I I [ L _ I . 1 J L I I I I t I

90 180 270 360

Azimuth, deg

(h) y = 9 in., z = -1.806 in.

Figure 18. Continued.

193
200.0 -

175.0

u, fps 150.0

125.0

100.0'

w, fps

Fu

50.0

25.0

0

-25.0

J I ] t I I J i t l I I k I I I J 1 _ L _ l I i _ ] I ] I 1 I I I I I t

"50"00 90 180 270 360

Azimuth, deg

10.0

0

Fw

Nu

Nw

T

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

60_- A ,

01-I J I [ J _[I J ] i _ I I S L I l I i I I'''' l, J, = _ _ _ J

0.3-

0.2

0.1

o;

I ! I t I I I i }

90 180 270 360

Azimuth, deg

(i) y = 8 in., z = -1.806 in.

Figure 18. Continued.

194
200.0 -

175.0

u, fps 150.0

125.0

100.0

w, fps

Fu

50.0 -

25.0

o

-25.0 :_-_

_ r,,,,,ll f r r r I_1 _l,,r,, r, rl,_ r r,_r _ I

"00 90 180 270 360

Azimuth, deg

10.0 I

0 I •

Fw

Nu

Nw

T

10"0 f

III

0 1 2 3 4 5 6 7 8 9 10 11 1-2 13 14 15 16

Orders

30

0

0.3--

Azimuth, deg

(j) y = 6 in., z = -1.806 in.

Figure 18. Continued.

195
150.0 -

125.0

u, fps 100.0

75.0

50.0

w, fps

Fu

50.0 -

25.0

o

-25.0 - _-'/_#"

_50.071 i L _, l _ _ I J J I, z _ J L I I _ _ , , r _ I J , t I , J , J J I

o 90 180 270 360

Azimuth, deg

10.0

0

Fw

NM

Nw

T

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

0_- i _ _ i J i i i I i i i I i i I i t i i t _ _ i i i I i i i i i i i I I

60_-

0.3-

0.2

0 J L J J , i J , [ L i , i i i i _ I i , J , i i i i I J = i J r _ i i J

0 90 180 270 360

Azimuth, deg

(k) y = 6 in., z = -1.806 in.

Figure 18. Continued.

196
150.0 -

125.0

u, fps 100.0

75.0

50.0 tl_lllLIll[llllll[ll[lllllflllL[l[ll

w, fps

Fu

50.0 -

25.O

0

-25.0

_50.00 L _ L z L L , i [ z ' J ' ' L ' ' ] ' i 1 L i ' * t I k , , J L L t L l 90 180 270 360

Azimuth, deg

Fw

Nu

Nw

T

10.0

0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

30

0 _

OF, _ , , , , _, L , _ , , , _ , , I L L i t _ _ , , I _ , i i i L i , I

0.3 --

0.2

0.1

00 90 180 270 360

Azimuth, deg

(1) y = -4 in., z = -1.806 in.

Figure 18. Continued,

197
150.0 _-

125.0

u, fps 100.0

75.0

50.0

50.0 -

w, fps

Fu

25.0

0

-25.o

_50.OoJ J I _ J i ' J 1 i I J J J L i _ 1 f L_ i i J I ' J J i I i L I 1 90 180 270 360

Azimuth, deg

10.0

0

Fw

Nu

Nw

T

10.0 t

0 _

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

60_- ^ . /

0_-_ ] J ¢ i I _ # I J ] i ' J i J _ 1 i E i ' ' ' ' i l J i _ J I , i I I

30 ,j,<-.z-_ j,j_ .,z_

0.3 m

0.2

00, , , , _ i _ , J , _ , , , , J _ I , _ _ , , k I , I , , , _ J J , , J 90 180 270 360

Azimuth, deg

(m) y = -6 in., z = -1.806 in.

Figure 18. Continued.

198
200.0 _-

175.0

u, fps 150.0

125.0

100.0

50.0 _-

25.01

w, fps 0 I

-25.0'

, , I , , , t _ [ L , L I L _ L I l L , , , , , L I l , , , , , , j _ I

_50g 00 90 180 270 360

Azimuth, deg

Fu 10.0

0 "

FW

NU

NW

T

10.0

0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

0_- I + + + + + + + 1 + + + + + + + + I + + + + + J + + J, + + + + I + I I J

°o30

0 I

0.3 --

0.2

0.1

i , i , , i i i I , f + r _ L I t I I f _ f I L _ _ I f i + _ + _ i _ I

v0 90 180 270 360

Azimuth, deg

(n) y = -8 in., z = -1.806 in.

Figure 18. Continued.

199
200.0 --

175.0

u, fps 150.0

125.0

100.0 llJIJIIjljJIjlllJjl_lJll_ljlllJ_llll

50.0 -

w, fps

Fu

25.0

0

-25.0

-50.00 I I I I I J J J )I I J _ J J J, I J f , I _ k f I I I J J , i j i j l

90 180 27O 360

Azimuth, deg

10.0 I

0 w

Fw

NM

Nw

T

10-0 I

01

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

60_-- /_A. _ _

60 FO_-I ' J I J _ I I J I , J t I J , J J t _ i k , i , j i j j j , j _ _ I

0.3--

0.2

i

oll

OoLll t _ =, JI, J, J_ I, I Ji jiI j jllj_,ll _ j i_ J

90 180 270 360

Azimuth, deg

(o) y = -9 in., z = -1.806 in.

Figure 18. Concluded.

200
200.0 -

175.0

u, fps 150.0

125.0

100.0 !

w, fps

Fu

50.0 -

25.0

0

-25.0 _-

"00 90 180 270 360

Azimuth, deg

10.0 t

0 /

Fw

NLI

Nw

T

10.0

0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

30

0

3O

0 I

0.3

0"I I

0.1

0 90 180 270 360

Azimuth, deg

(a) y = 0 in., z = -7.074 in.

Figure 19. Velocity and turbulence at station 32 in.

201
200.0 F

175.0 -

u, fps 150.0

50.0 -

25.0

w, fps 0-

-25.0 ---_-_-_

Fu

90 180 270 360

Azimuth, deg

10.0 I

01

Fw

Nu

Nw

T

10.0

0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

J I J [ f J I.J _ i _ j I

0 J J _ J _ t I _ t i I _ i I I t J I _ L I I J I I l I i _ i I I i J

0.3--

0.2

0.1

05 i _I r _ .t i t

90 180 270 360

Azimuth, deg

(b) y = 0 in., z = 6.074 in.

Figure 19. Continued.

202
200.0 -

175.0

u, fps 150.0

125.0

100.0

w, fps

Fu

50.0 -

25.0

0

-25o

.50.00 _ J i, L _ L I I I I L L _ i I k I I _ i i , i _ i I L i i i i , i L I 90 180 270 360

Azimuth, deg

10.0

0 li

Fw

Nu

Nw

T

10.0

0 i

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

30

0 I

30

0 J

0.3--

0.2

0.1

0 90 180 270 360

Azimuth, deg

(c) y = 0 in., z = 4.074 in.

Figure 19. Continued.

203
200.0 -

175.0

u, fps 150.0

125.0'

100.0

w, fps

FM

50.0 -

25.0

°__

.50.0_,,, _, J J I I J J I I i _ J J t _ ,,,,,, .1 I i i _ _ _,,, I

0 90 180 270 360

Azimuth, deg

l°';r ,,

Fw

NM

Nw

T

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

°°_ 130 /_/_

k

0 ' ' ' , ' ' _ J-J

0.3-

0.2

0.1

0_) _ ' ' ' ' ' ' '

__t t J J _ I J ; I I I J

90 180 270 360

Azimuth, deg

(d) y = 0 in., z = 2.074 in.

Figure 19. Continued.

204
150.0 -

125.0

u, fps 100.0

75.0

50.0

50.0 --

w, fps

Fu

25.0

0

-25.0

.50.00 _ _ , p , , , J t _ J , , , , , , I _ _ _ , _ p , ] I L , i i L , J , I 90 180 270 360

Azimuth, deg

10.0

0

Fw

Nu

Nw

T

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

30

0}- + + + + + + J I l + + + + I + + + J + + + + + + + I I , + + J J J J + I

30

0 i , I i I I i c ] f i f _ i i f , I i i _ _ + J i _ I I , + r i i i I I

0.3--

0.2

I I I l I I I t 1 I i I I _ I ] I l L I I I I I I i [ i 1 t I I I t I ]

t_

"0 90 180 270 360

Azimuth, deg

(e) y = 0 in., z = -].926 in.

Figure 19. Continued.

205
150.0 -

125.0

u, fps 100.0

75.0

50.0

50.0 -

25.0

w, fps 0

-25.0

-50.00

Fu

J , , _ , _ _ J I , , , , , .l I J t , J J _ I , = , I , j t , I , j.___J

90 180 270 360

Azimuth, deg

Fw

Nu

Nw

T

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

30 _ "V_A/'-

0b_ll _, 1 _1, , L_JJ J,I ,,, J l _, ,l_, j,,,,,I

:30 @

Oh-, , , , i , J J I _ , , , , , ,._ I _ i i , , j , _ I , _ , , i _ j i I

0.3--

Azimuth, deg

(f) y = 0 in., z = -5.926 in.

Figure 19. Continued.

2O6
150.0 -

i

125.0

u, fps 100.0,

75.0

50.0

50.0

25.01

w, fps 0

-25.0

_50,00 j i i _ i i t _9OI, i,, i _, f 180I i,,,,,,, 270} _,, _ _,,, 360I

Azimuth, deg

Fu

Fw

NM

Nw

T

10.0

0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

30

0 L _ i i i i i I i i J i t i L , I , , ,, , , , , I

30

0 _

0.3 --

0.2

0.1

0

h i i i i = i _ I L t L h i i h i I i i J i = i = i [ i i = i _ J i L I

90 180 270 360

Azimuth, deg

(g) y = 0 in., z = -7.926 in.

Figure 19. Continued.

207
200.0 --

175.0

u, fps 150.0 _ ____

125.0 _--_-

100.0 I I I ' , ' _ ' I , , f J J I r J I _ j _ _ j _ , j. I i , , , , , , _ I

50.0 -

W, fps

Fu

25.0

0

-25.0 -

.50.0_ , .... , ,, I L = _, ,, J, I _,,,, ,,, I,,, _,, _, I

0 90 180 270 360

Azimuth, deg

10.0

0

Fw

Nu

Nw

T

10.0 f

0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

01- I t _ I _ I I I I I J I I i t J j I i 1__ i i i K i I _ i t L L _ i _ _

60_

0_- I I I ' I I _ I I , _ _ I J , , i j i i j _ i_j , 11 , _ i , i i _ iA

0,3--

0.2

0.1

0 90 180 270 360

Azimuth, deg

(h) y = 9 in., z = -1.926 in.

Figure 19. Continued.

208
200.0 -

175.0

u, fps 150.0

125.0

100.0

w, fps

Fu

50.0 -

25.0

0

-25.0

_50.0. i i i _ i I i i I i i i L L L i L I i i i L i i i i I i L L i i , t i I

o 90 180 270 360

Azimuth, deg

Fw

NM

Nw

T

10.0 t

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

30

0 I

30

0 l

0.3-

0.2

0.1

G-_ i i L.L i i i L I _ J I _ I t }

3 90 180 270 360

Azimuth, deg

(i) y = 8 in., z = -1.926 in.

Figure 19. Continued.

209
200.0 -

175.0

u, fps 150.0

125.0

100.0

w, fps

Fu

50.0 -

25.0

o

-25.0

,,,,, _ , _t,,, _,,i Ji k I ill, iJiJ ,l, i r, f

_50 I O0 90 180 270 360

Azimuth, deg

10.0

I II I

Fw

Nu

Nw

T

60

30

0

60

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

i I i I I J I ] i ¢ i ] i i i i 1 i J K ] i I J ¢ I K I t

0 l I I I i i i i I l i i I l i i l l I l i I i i I i I i i i I

0,3--

0.2

Odi i I i l I i l ] i i I I I I I l l l l ' i I I l i l l i i I I i i i I 90 180 270 360

Azimuth, deg

(j) y = 6 in., z = -1.926 in.

Figure 19. Continued.

210
150.0 -

125.0

u, fps 100.0

75.0

50.0

w, fps

Fu

Fw

Nu

Nw

T

10.0_

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

oo3o

0 Lht L,_L, LI, _LLLJ I LLl,,lll, l,,,,,_,L

30oo

0 I

0.3_

0.2

0.1

00 90 180 270 360

Azimuth, deg

(k) 3'= 4 in., z = -1.926 in.

Figure 19. Continued.

211
150.0 --

125.0

u, fps 100.0

75.0

50.0

50.0 -

25.0

W, fps 0

- A

.50.00_ _,, _ _ i i 90I i i i i i L i i 180l._ I L _ _ L _ I270I I t _ _ t L , ,360t

Azimuth, deg

Fu

Fw

Nu

Nw

T

10.0

0.3 --

0.2

01_-_ __

j i i i j i = i J = i i J J i J J I r _ I _ _ I I J ] L _ J J I I J _ )

90 180 270 360

Azimuth, deg

(1) y = -4 in., z = -1.926 in.

Figure 19. Continued.

212
200.0 -

175.0

u, fps 150.0

125.0

100.0 i i i i i i _ i i i L i L i L I

w, fps

Fu

50.0 _-

I

25.0

0

-25.0 _

_50.00 _ , I , I _ , , [ , , , , _ _ i L I L _ , , , L , I [ t L L , , I L _ k 90 180 270 360

Azimuth, deg

10.0 I

0'

Fw

Nu

Nw

T

10.0

0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

oo30

0

30

0

0.3,-

0.2

0.1 -

, , _ , l t , _ J _ _ J t t t , L 1 t , t t , _ , 1 [ L , _ i , J 1 I I

00- 90 180 270 360

Azimuth, deg

(m) y = -6 in., z = -1.926 in.

Figure 19. Continued.

213
200.0 -

175.0

u, fps 150.0

125.0

100.0

w, fps

Fu

50.0 -

25.0

0

-25.0 _ __.. ___.____._j

o 90 180 270 360

Azimuth, deg

10.0

0 '

Fw

Nu

Nw

T

10.0

0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

60_-

OI-L L I i J J _ , i r J , J , , , I I , J _ _ , i i i I J J J ,.J i L I_._I

0.3-

0.2

o.1

00,,,,,,,,I,,,,,,,, 1,, ll,i J Jj_J J lllllt 90 180 270 360

Azimuth, deg

(n) y = -8 in., z = -].926 in.

Figure 19. Continued.

214
200.0 -

175.0

u, fps 150.0

125.0

100.0 i[tlllllllllllllLIl[il[{[illlli[l[{t

50.0 -

w, fps

Fu

25.0

0

-25.0

J L I I I [ I I I J

"50"00 i t L L J J J 90 180 270 360

Azimuth, deg

Fw

Nu

Nw

T

10.0

0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

60__ L30 i r i , _ i i i _ _ i i i i i i i i i i , i L

0

30

0

0.3-

0.2

0.1-

00 90 180 270 360

Azimuth, deg

(o) y = -9 in., z = -1.926 in.

Figure 19. Concluded.

215
200.0 _-

175.0

u, fps 150.0 _-.___.____

125.0

100.0 J z I I ] t i ] _ I j = = I j I t i J 1 I j j _ j j j _, IIIlllll

50.0 -

25.0

w, fps 0

-25.0

Fu

.50.06 L, J z J I J J I J J I I r,, J I t _ i, _ =,, f ,

90 180 270

Azimuth, deg

1° I

illlllll

360

Fw

Nu

Nw

T

1°- t

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

0.3-

0.2

0.1

f) I

-0 90 180 270 360

Azimuth, deg

(a) y = 0 in., z = 6.953 in.

Figure 20. Velocity and turbulence at station 34 in.

216
200.0 -

175.0

u, fps 150.0

125.0

100.0 lllLil[IliltlilillliLllilllll[lilifl

w, fps

Fu

50.0 -

25.0

0

-25.0 -

L i k ; i t _ J f i J i i i i _ L t t L t i i J t i I i i i J J i i t [

"50"00 90 180 270 360

Azimuth, deg

10._

Fw

Nu

Nw

T

10.0

0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

oo30

0 7

30

0 , I I L L t I I J t , L I L I I R I I I , I i i J _ _ i I h I I I

0.3--

0.2

0.1

00_ 90 180 270 360

Azimuth, deg

(b) y = 0 in., z = 5.953 in.

Figure 20. Continued.

217
200.0 -

175.0

u, fps 150.0

125.0

100.0

w, fps

Fu

50.0 -

25.0

0

-25.0 -_--__ _ _-_----_--_

.50.00 i J _ _ , J _ t J J i i,, t _ _ r _ _ _, _ _,, I, i t r,, J _ J 90 180 270 360

Azimuth, deg

10.0

0

Fw

Nu

Nw

T

10.0

0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

60F _ --

0.3--

0.2

0.1

0o 90 180 270 360

Azimuth, deg

(c) y = 0 in., z = 3.953 in.

Figure 20. Continued.

218
u, fps 150.0

125.0

100.0

200.0 -

175.0 __

J+3J+J}lJJJIJ JJ+JJJJ+JJJJJJJJIJ JJ JJI

50.0 -

w, fps

Fu

25.0

0

.50.00 L I I I I I I I k i i t L , I t I I I I , I I I I I I I I L I I I _ I I 90 180 270 360

Azimuth, deg

10.0

o

Fw

Nu

Nw

T

10.0

0

3O

0

30

/_ 2 3 4 _ 6 7 8 9 10 11 12 13 14 15 16

0.3--

02

0 .1{,.) _ _ ] I 1 1 I ] L l _ L I I I I I I I I I ] I

-0 90 180 270 360

Azimuth, deg

(d) y = 0 in., z = 1.953 in.

Figure 20. Continued.

219
200.0 -

175.O

u, fps 150.0

125.0 __.

100.0 J i t i + + + i J _ J z £ J i J I I,, + , J+-_'-/w+_+ i + i i I , £ J

50.0 -

w, fps

Fu

25.0

o

-25.0: -_--_+"_+ +_+/ _ _]_ +_++].._+++Vt L t _ + + + t I L L L + ; L ; ; I _ i ¢ ¢ ¢ + , , l , , , , , , , , l

-50"00 90 180 270 360

Azimuth, deg

10.0

0 ' '

Fw

Nu

Nw

T

(e) y = 0 in., z = -2.047 in.

Figure 20. Continued.

220
200.0 -

175.0

u, fps 150.0

125.0_ _ i i I i i i j L i i I i i i i i i i L

100.0 i

w, fps

Fu

50.0 -

25.0

0

l r r f l _ i j 1 I r , I 1 J t _ t ' ' ' ' ' ' ' ' J J I t ' i t I t I

_50 "00 90 180 270 360

Azimuth, deg

Fw

Nu

Nw

T

10.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

oo30

0 I

0.3--

0.2

0.1 -

I I I I I I I I [ I I t I I I I I l i i i i i i I I [ I I I ] , s ' '_J

00 90 180 270 360

Azimuth, deg

(f) y = 0 in., z = -6.047 in.

Figure 20. Continued.

221
150.0 -

125.0

u, fps 100.0

75.0

50.0

50.0

25.0

w, fps 0

Fu

-50

"00 90 180 270 360

Azimuth, deg

10.0

0

Fw

NM

Nw

T

10.0

0 " I

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

30 v'%_

Or- J , J J _ , , , t , J j f i i j i I L i , , j _ , , I i j i _ , i , r j

0,3--

0.2

o.1 ̧

' ' ' ' J _ I J I ] ' J i I I ' I I J t i l : , , , t J , , J : I I j i I

00 90 180 270 360

Azimuth, deg

(g) y = 0 in., z = -8.047 in.

Figure 20. Continued.

222
200.0 --

175.0

u, fps 150.0

125.0

100.0

w, fps

Fu

50.0 -

25.0

0 _ ___

-25.0

-500-'''''' _ j I J J J i, L L L L,,,, _ L L, t,, ,,, _ i , I

" 0 90 180 270 360

Azimuth, deg

10.0

0

Fw

Nu

Nw

T

10.0

0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

oo30

0 I

0.3--

0.2

0.1

00 90 180 270 360

Azimuth, deg

(h) y = 9 in., z = -2.047 in.

Figure 20. Continued.

223
200.0 -

175.0

u, fps 150.0

125.0

100.0 lilfJJtl}JlIJtJZlJtllJtl[ilrlJitJJil

50.0 -

w, fps

Fu

25.0

o

-25.0 -

.50.00 _ J i x J_L.I J J90J J L I i i i i ,180 J i J,,,,, 2701,

Azimuth, deg

10.0

0 I

ItJlJl

360

Fw

Nu

Nw

T

10.0

0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

1 I

0.3 --

0.2

0.1

v0 90 180 270 360

Azimuth, deg

(i) y = 8 in., z = -2.047 in.

Figure 20. Continued.

224
200.0 -

175.0

u, fps 150.0

125.0

100.0

50.0 -

25.0

w, fps 0

Fu

-25.0 -

-5000'" ' ' ' ' ' ' ' ' 901

J J 1 J J J J t J J J J J J J J I J _ J J J J J J I

180 270 360

Azimuth, deg

Fw

Nu

Nw

T

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

oo30

0 J

°°

30

0 I

0.3-

0.2

0.1

O- I h I L L h _ i [ i i 1 I L i i I

-0 90 180 270 360

Azimuth, deg

(j) y = 6 in., z = -2.047 in.

Figure 20. Continued.

225
200.0 -

175.0

u, fps 150.0

125.0 -

100.0-1 i , J i / E j L , l , _ J = i i i i _ _ i I

w, fps

Fu

50.0 -

25.0

-25.0 -

-50.0 i i i _ L = , i I i J , , L J L , I I J , _ J , J _ 1 , t I I I = J I )

0 90 180 270 360

Azimuth, deg

1° 1

Fw

Nu

Nw

T

10.0 f

0 1 2 3 4 5 6 '7 8 9 10 11 12 13 14 15 16

Orders

30

0 I

OII t L L _ L L t I_ t_ L LtLt I I L_ L _--tt I 1 l LIt t t _ L I

0.3-

0.2

00" 90 180 270 360

Azimuth, deg

(k) y = 4 in., z = -2.047 in.

Figure 20. Continued.

226
200.0 -

175.0

u, fps 150.0

125.0

100.0 I I I 1 I l I I

w, fps

Fu

50.0 -

25.0

0 _

-25.0

, i,,,,_ +l i, J, J+ , Jl JJ _1, iJ i i_lJJ J i _ J

-50"00 90 180 270 360

Azimuth, deg

Fw

Nu

Nw

T

10.0

0 i 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

°o30

0 I

30

, J , i + i , I i t L I , l , J l t J , i l , , i I

0.3-

0.2

0.1

O0 i i i i i i + i I i i t i i i i L I I I J J + i _ + I i L i I i i _ + I 90 180 270 360

Azimuth, deg

(1) y = -4 in., z = -2.04? in.

Figure 20. Continued.

227
200.0 -

175.0

u, fps 150.0

125.0

100.0 I I I I I I I I I

w, fps

Fu

50.0 -

25.0

0

-25.0 - ,_,_f_

-5000 _ i _ i '' i i I i i , I i , , , I,, _ , j L i , I i , t I , I I I I " 90 180 270 360

Azimuth, deg

10.0

0

Fw

NM

Nw

T

10.0 I

0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

60F- ,

O_L , i t k k _ , I I I I I _ I I , I J J I , I , I I [ I , , , I J J _J

OFi _ L , j I I t I J , I I I _ I L i I , I h I I I I I , J I J L I L I I

0.:3--

0.2

o.1

0 i i i i , _ , i i _ i _ i I L , I I i I _ _ J , I I I J I I I L I I I i

0 90 180 270 360

Azimuth, deg

(m) y = -6 in., z = -2.04? in.

Figure 20. Continued.

228
200.0 -

175.0

u, fps 150.0

125.0

100.0 i I I I _ i I I [ I _ _ I i I I _ L i I i i I L i i I i i _ i i i _ i (

w, fps

Fu

50.0 -

25.0

0

-25.0 _

_50.0_, J , _ , , _ , I , _ J _ _ J _ I I , J , , , i , , I L , I , , i , I ) 90 180 270 360

Azimuth, deg

10.0

0

Fw

Nu

Nw

T

10.0

0 "

i 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

oo30

0 I

oo30

0 i

0.3--

0.2

0.1

0_) , , , , , , , , J , , J , J J , J [ i i i , _ J i _ f J i , , i i i _ 1

90 180 270 360

Azimuth, deg

(n) y = -8 in., z = -2.047 in.

Figure 20. Continued.

229
200.0 -

175.0

u, fps 150.0

125.0

100.0

50.0 --

25.0

w, fps

FM

0

-25.0

_50.0- i i i R i i i i L i i i J t i i k i i i i i J,, I ....... , I

o 90 180 270 360

Azimuth, deg

Fw

NM

Nw

T

10.0

0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

i i j j i j t L L L I i i i L _ , I I L , I , I L I I L I

O_lll _ilJ_Jli_LLJill LLttiii Jilil_lll L I

0.3--

0.2

0_1 i L I i L I , I I J I _ I I I _ I I , L * ' I L L I ' k I I ' ' ' J ] 90 180 270 360

Azimuth, deg

(o) y = -9 in., z = -2.047 in.

Figure 20. Concluded.

230
200.0 -

175.0

u, fps 150.0

125.0

100.0 , t _ I J J _ i I I , , , , J t I i , , , t i J J , i , J i , , , , , I

w, fps

Fu

50.0 --

25.0

0

-25.0 _-

_50.00 J ' E _ ' J _ ¢ I ' ' ' ' ' I ' ' ] I ' , ' i ' J i I J J ' ' , ' _ J l 90 180 270 360

Azimuth, deg

10.0 I

0 _

Fw

NM

Nw

T

10.0

0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

30

0 _ I I I _ I I I L I _ _ _ I _ I _ L i I i _ i i i _ L I i i _ i _ i i I

°o30

0 r

0.3-

0.2

0.1

I

00 90 180 270 360

Azimuth, deg

(a) y = 0 in., z = 6.833 in.

Figure 21. Velocity and turbulence at station 36 in.

231
200.0 -

175.0

u, fps 150.0

125.0

100.0 i i t _ i i t i I j i t _ i a i i [ I I I I I i t I I i t t I I I _ I I

w, fps

Fu

50.0-

25.0

0

-25.0

.50.00 _ _,,,, k, 90], = J, _,,, 180I J,, ,, i,, 270I _ i, ,, t _ i360I

Azimuth, deg

10._

Fw

Nu

Nw

T

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

0_1 i i i , , b , i I , I , L I L L i _ I J I , L , , ] I I , I , , J ,

30 _

OF1 i , i i , j L I , , , , h , _ k i L , _ I , L , _ I , J , _ _ _ h I

0.3--

0.2

0.1

I

00 90 180 270 360

Azimuth, deg

(b) y = 0 in., z = 5.833 in.

Figure 21. Continued.

232
200.0 -

175.0

u, fps 150.0

125.0

100.0

50.0

25.0

w, fps O i

Fu

-25.0 _ _ __

i i i i i J J _ t _ J i i , J i _ J J J J i J J i i J J i i i i i i J l

"50"00 90 180 270 360

Azimuth, deg

10.0

0

Fw

Nu

Nw

T

10.0

0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

30

0

30

0

0.3--

0.2

0._

I

00 90 180 270 360

Azimuth, deg

(c) y = 0 in., z = 3.833 in.

Figure 21. Continued.

233
200.0 -

175.0

u, fps 150.0

125.0

100.£

w, fps

Fu

50.0 -

25.0

0

-25.0

_50.0-_ i, , _,, , I,,,,,,,, I _ k , , , , , , I , J _ ..... I

o 90 180 270 360

Azimuth, deg

10.0 f

o m= J

Fw

NM

Nw

T

10-0 l

m J

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

30

0 _ ,ilL,,,,,,l i i i i IILL,ll J L l' _'_ l

OFj j i s L , , , t , , I I t t I L L , J I , I L , J L J i i b L i h L I

0.3_ 0.2

I¢

90 180 270 360

Azimuth, deg

(d) y = 0 in., z = 1.833 in.

Figure 21. Continued.

234
200.0 -

175.0

u, fps 150.0

125.0

100.0

5O.0 -

25.0

w, fps 0

°25.0

-50.01

Fu 10.0

0

Azimuth, deg

Fw

Nu

Nw

T

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

30

0 I

o.3 0.2

'o

Azimuth, deg

(e) y = 0 in., z = -2.167 in.

Figure 21. Continued.

235
200.0 -

175.0

u, fps 150.0

125.0

100.0

w, fps

Fu

50.0 -

25.0

0

_5000 I I p _ E i L L I L i i i i t _ t I L k,,,,,, I,,,,,,,, I • 90 180 270 360

Azimuth, deg

10.0

0

Fw

Nu

Nw

T

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

60E- f A

OF, , r , i j , J I I , , I , , , I I I , _ Ls I L I I , J _ t _ L I ,

0.3-

0.2

0.1 _./_/_-_

I l i L I I I i i _ I L I L i I i I i i J i i I a t [ I i I J I L I L I

00 90 180 270 360

Azimuth, deg

(f) y = 0 in., z = -6.167 in.

Figure 21. Continued.

236
200.0 -

175.0

u, fps 150.0

125.0

100.0 --III IIIllll

w, fps

Fu

5O.O -

25.0

0

-25.0

_50.00 I , J I , , , ,90I , , , , , I J J180I , , , , I , , ,270I , , J 4 I , J _360I

Azimuth, deg

Fw

Nu

Nw

T

1° I

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

oo30

0 , , i J _ _ , , J , i i _ J , _ i I J r i J J i , i J i J i B i i J J I

30

0.3 --

0.2

0.1

_t_LL L_L [_,_L_,L_IL LL L_LLLI,L_LLLlll

00 90 180 270 360

Azimuth, deg

(g) y = 0 in., z = -8.167 in.

Figure 21. Continued.

237
u, fps 150.0

125.0

100.0

w, fps

Fu

50.0-

25.o!

0=

-25.0

.50.00, i, I I,, ,90I _ _ , L , , , ,180k _ , L L = , , i270J L i L , , , J L360I

Azimuth, deg

10._ ,

Fw

Nu

Nw

T

10.0

0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

I I I l 1 l t I I I L L I I I I I t I I ]

0 , , I t I _ I , , , , t___, _ _ , , _ I , _ , _ , , , _ I

0.3--

0.2

I L I I I L l I L L L I ] I l t B [ I ] I 1 I L [ I I I I J I I t I I

"0 90 180 270 360

Azimuth, deg

(h) y = 9 in., z = -2. ]67 in.

Figure 21. Continued.

2.35
200.0 -

175.0

u, fps 150.0

125.0

100.0

w, fps

Fu

50.0-

25.0

-25.0 "

_50.00 _ _ , , , , , i I L J , , , , , , I , _ i , , , , , I , J J _ , , , i I 90 180 270 360

Azimuth, deg

10-0 I

0 /

Fw

Nu

Nw

T

10.0

0 I

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

30

0 I

3O

0 I

0.3--

0.2

0.1

I I I I I I l ] I 1 I I i I I I I

00 90 180 270 360

Azimuth, deg

(i) y = 8 in., z = -2.167 in.

Figure 21. Continued.

239
200.0 -

175.0

u, fps 150.0

125.0

100.0

w, fps

FM

50.0 -

Azimuth, deg

10.0

0

Fw

NM

Nw

T

10.0

0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

30

OF, L, _ , L, _I 11,,,,, L I h L LL''' _I' i'''L''l

OF _ I I _ 4 I L I I i I 1 J I t L L I I i I J t J I I I I i I I I L I _ i

0.3 --

Azimuth, deg

(j) y = 6 in., z = -2.167 in.

Figure 21. Continued.

240
200.0 -

175.0

u, fps 150.0

125.0 _

100.0- J L J J i i _ _ I i i i _ i i i i J _ i t i _ i J J

50.0 -

w, fps

Fu

25.0

o

-25.0 -

.50.00 I I I I I J J J I I J J I _ I I I I I I , I I I J _ I , , t I I _ i I I 9O 180 270 360

Azimuth, deg

10.0

0

Fw

Nu

Nw

T

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

oo30

0

60

0.3-

Azimuth, deg

(k) y = 4 in., z = -2.167 in.

Figure 21. Continued.

241
200.0 -

175.0

u, fps 150.0

125.0

100.0

50.0 -

w, fps

Fu

25.0

0

-25o

t L I L J J i i J L L I J I _ I I J _ A _ _ L h I I ] _ I I ' I _ I L I

_50 "00 90 180 270 360

Azimuth, deg

10.0}

01

Fw 10.0

0

1 2 3 4 5 6 7 8

Nu

Nw

T

9 10 11 12 13 14 15 16

Orders

0.3--

0.2

0.1

0o

i i I I ] [ J [ t [ I i I I I _ J L I i I J I i t [ J I J i L I I i I

90 180 270 360

Azimuth, deg

(l) y = -4 in., z = -2.167 in.

Figure 21. Continued.

242
200.0 -

175.0

u, fps 150.0

125.0

100.0

w, fps

Fu

50.0 -

25.0

0

-25.0

.5000 i , , , .... t ,

• 90

, L i i i i _ I i i J i , L i i I _ i i i i i , i 1

180 270 360

Azimuth, deg

Fw

Nu

Nw

T

1° I

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

60_j

30

0

oo3o

0 , _ , I

0.3--

0.2

0.1

%

I I l 1 I I I I I I I _ J I J J I 1 t I I I I J 1 I I l I J 1 .... 1

90 180 270 360

Azimuth, deg

(m) y = -6 in., z = -2.167 in.

Figure 21. Continued.

243
200.0 -

175.0

u, fps 150.0

125.0

100.0

50.0 -

w, fps

Fu

25.0 -

0

-25.0

.50.0--i i, ,, I, i I f I I _,, J, I,, I, , I _ I I L I _ I _, f _ I

o 90 180 270 360

Azimuth, deg

10.0

0

Fw

Nu

Nw

T

10.0

0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

60F _-

0.3-

0.2

o.1

I I I s t I J I I L I I J L L , , i I , _ I I I I I I I I J I I t L I I

"0 90 180 270 360

Azimuth, deg

(n) y = -8 in., z = -2.157 in.

Figure 21. Continued.

244
200.0 -

175.0

u, fps 150.0

125.0

100.0

w, fps

F:u

50.0 -

25.0

0

-25.0 _

.50.0(_1 _ t,,,, i I, L L _ L i,, i,,,,,, i L I,,, _ i _ i L I 90 180 270 360

Azimuth, deg

10._

Fw

Nu

Nw

T

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Orders

oo30

0 I

30

0 I

0.3-

0.2

0.1_

00,_,,_,, f,,,,,,,,ILI_L, Li L[,I L_,LII i 9O 18O 270 360

Azimuth, deg

(o) y = -9 in., z = -2.167 in.

Figure 21. Concluded.

245
REPORT DOCUMENTATION PAGE I Form OMS,,_t_av_ No.0Z04-01_

Pul_icreportingburdenforthkloollectlonof informatiOnis estlmatadto average I hourper response,includingthe timeforrevN_t/IngIna_ructlons, searching existingdatasources,

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1. AGENCY USE ONLY (Leave blank) 2. REPORT DATE 3. REPORT TYPE AND DATES COVERED

March 1997 Technical Memorandum

4. TITLE AND SUBTITLE 5. FUNDING NUMBERS

Unsteady Velocity Measurement Taken Behind a Model Helicopter Rotor

Hub in Foward Flight

s. AUTHOR(S)

John D. Berry

7. PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES)

NASA Langley Research Center Joint Research Program Office

Hampton, VA 23681-0001 Aeroflightdynarnics Directorate

U.S. Army Aviation and Troop Command

NASA Langley Research Center

Hampton, VA 23681-0001

9. SPONSORING/MONITORING AGENCY NAME(S) AND ADDRESS(ES)

National Aeronautics and Space Administration

Washington, DC 20546-0001

and

U.S. Army Aviation and Troop Command

St. Louis, MO 63120-1798

WU 505-59-36-01

8. PERFORMING ORGANIZATION

REPORT NUMBER

L-17524

10. SPONSORING/MONITORING

AGENCY REPORT NUMBER

NASA TM°4738

ATCOM TR-97-A-001

11. SUPPLEMENTARY NOTES

1211. DISTRIBUTION/AVAILABILITY STATEMENT 12b. DISTRIBUTION CODE

Unclassified-Unlimited

Subject Category 05

Availability: NASA CASI (301) 621-0390

13. ABSTRACT (Maximum 200 words)

Drag caused by separated flow behind the hub of a helicopter has an adverse effect on aerodynamic performance of the aircraft. To determine the effect of separated flow on a configuration used extensively for helicopter aerodynamic investigations, an experiment was conducted using a laser velocimeter to measure

velocities in the wake of a model helicopter hub operating at Mach-scaled conditions in forward flight. Velocity measurements were taken using a laser velocimeter with components in the vertical and downstream

directions. Measurements were taken at 13 stations downstream from the rotor hub. At each station,

measurements were taken in both a horizontal and vertical row of locations, These measurements were analyzed for harmonic content based on the rotor period of revolution. After accounting for these periodic velocities, the remaining unsteady velocities were treated as turbulence. Turbulence intensity distributions are

presented. Average turbulent intensities ranged from approximately 2 percent of free stream to over 15 percent of free stream at specific locations and azimuths. The maximum average value of turbulence was located

near the rear-facing region of the fuselage.

14. SUBJECTTERMS

Helicopter; Wind tunnel model; Turbulence; Rotorcraft; Unsteady velocities; Rotor

hub; Laser velocimeter

17. SECURITY CLASSIFICATION

OF REPORT

Unclassified

18. SECURITY CLASSIFICATION

OF THIS PAGE

Unclassified

19. SECURITY CLASSIFICATION

OF ABSTRACT

Unclassified

NSN 7540-01-280-S500

15. NUMBER OF PAGES

246

16. PRICE CODE

All

20. LIMITATION

OF ABSTRACT

Unlimited

Standard Form 298 (Rev. 2-89)

Prescribedby ANSiStd. Z39-t8

298-102