- 132 APPENDIX B
533.6 AERODYNAMICS
533.6
Aerodynamics
Special analytical subdivisions.01 subdivisions may be used throughout 533.6.03/.04"a r e only applicable to 533.69.01/.04"
may be used as main numbers where no othernumber has been allocated.05/.08"
should be used as main numbers
It is undesirable that one analytical number should be added toanother.
533.6.011
Motion of and in gases. Flow.
.011.1
Theory of dimensions.011.12
Reynolds number effect. Scale effect.
.011.32
Flow at subsonic velocities - without compressibilityeffect.011.34""""- with compressibility
effect.011.35"" transonic".011.5"" supersonic "n.011.55" hypersonic "(Mach 5 and above).011.6Heat transfer phenomena of moving bodies and gases(To include all problems of aerodynamics with heat,including cooling. See 532.546 for flow of liquids
through porous media).011.72
Shock waves. Shock wave configuration.
.011.8Super aerodynamics. Flow in rarefied gases.
.013.013.1.013.12.013.122.013.13.013.14.013.15.013.16.013.17.013.18

Dynamics of aeronautical machines
F o r c e s and moments
Drag (Cooling, induced, p r e s s u r e , form, surface
friction, base drag)Drag reduction. Area ruleLift. Normal force
Lateral force. Side force
Pitching moment
Rolling"Yawing"Hinge

- 133 Appendix B (Continued)
533.6.013.2.013.4.013.412.013.413.013.415.013.417.013.418.013.42.013.422.013.423.013.424.013.425.013.43.013.47.013.6.013.63.013.65.013.66.013.67.013.68.013.682.013.685.013.686.013.7.015.015.1.015.2.015.3.015.32.015.34.015.342.015.343.015.5.015.7.015.72.015.74.015.8Unsteady motion
Stability( P a p e r s dealing with stability and control ing e n e r a l go h e r e )Longitudinal stability
Lateral"Directional"
Stability d e r i v a t i v e sC r o s s coupling. Inertia coupling
Aeroelasticity
FlutterDamping. B a l a n c e s . M a s s b a l a n c e sDivergence. Increased oscillation
Effect on c o n t r o l s(Control r e v e r s a l and l o s s of control e f f e c t i v e n e s s )Buffeting
Aircraft r e s p o n s e
Conditions of flight
Turning flight
Manoeuvring flight
Stalling
Hovering. Low speed flight
N o n - p o w e r e d flight
Gliding"Towed"Parasitic"
Spinning
PerformanceTake-off
Approach and landing
Speed. Rate of a s c e n t . Rate of d e s c e n t
Speed
Rate of a s c e n t and d e s c e n t
Rate of a s c e n t . Climbing
Rate of d e s c e n t . DivingHigh altitude
Duration and d i s t a n c e
Duration
Range. Radius of action. A i r m i l e s p e r gallon
P r e d i c t i o n of p e r f o r m a n c e . Reduction t o standarda t m o s p h e r i c conditions

- 134 Appendix B (Continued)
533.6.031
.032
.033
.034
.035
.036
.037
.048
.048.1.048.2.048.3.048.5533.6.05.053.055
533.6.07.071.071.1.071.11.071.2.071.3.071.31.071.32.071.33

Aspect ratioCamber
Taper and twist
Thickness distribution
Dihedral
Surface conditions
Fineness ratio
Airflow variables
Aerodynamic loadingP r e s s u r e distribution
Downwash. Wakes
Gust loads. Acceleration s t r e s s e s . Vg tests
Flight testing techniques(for flow visualisation methods see 533.6.071.31)
Full scale. Piloted
Model. Pilotless
Ground testing techniques. Wind tunnels, watertunnels, etc.
Wind tunnels
May be divided alphabetically by type if required.
e . g . Blowdown.
Use only for descriptions of testing plants, equipment
and techniques. Reports on t e s t s in wind tunnels, etc.
go under the configuration tested with the addition of.001.5 if desired.
Construction. Working section. Vanes. Cascades.
Diffusers. Bulges. Contractions. Screens. Nozzles.
Wave m a k e r s .
Walls - slotted, porous, flexible
Power plant
Apparatus
Visualisation methods
Balances, Model mountings. Stings
Models( F o r other instruments use existing U . D . C . number
coloned to 533.6.071.3 e . g . Manometers 533.6.071.3:531.787)

- 135 Appendix B (Continued)
533.6.071.4.071.5
.072
.073
.074
.075
.075.2.075.5
.076
.077
.078

Flow problems. Interference. Turbulence.
Calibration. Corrections. Scale effect. Useof gases other than a i r .
Tunnel conditions. Ventilation. Noise. T e m p e r a t u r e .
Humidity. P r e s s u r e , etc.
Spinning tunnels
Shock tubes
Water tanks. Water tunnels
Apparatus with rotating devices
Whirling a r m s
Propeller and rotor testing plant
Analogies. Tanks for solving potential flow problems
Ballistic ranges, etc.
High speed railways. Sleds.
Note: The divisions .072/.078 may be subdivided as.071. F o r different types of wind tunnels use
subdivisions of 533.6 e . g . Supersonic tunnels
533.6.071.011.5

533.6.08.082.3.082.7.088.089

533.61
.62
.63
.64
.65
.652

Flow measurement
Divide as 53.08 e . g . :Use of aerodynamic and aerostatic phenomena( i . e . measurement in p r e s s u r e head, static
head or vent, trailing static, air log e t c . )Use of electrical phenomena( i . e . hot wire anemometers)
Accuracy. E r r o r s . Correction( e . g . Position e r r o r )Calibration( F o r meteorological anemometers see 551.508.2" airspeed indicators see 629.13.053.2" fluid flow measurement 532.57)
Lighter-than-air-machines
F r e e balloons
Captive balloons
Dirigible balloons. Airships
Aeroplanes
Land planes

- 136 Appendix B (Continued)
533.652.1.652.2.652.3.652.5.652.6.652.9.655.655.2.655.3.655.4.657

Monoplanes
Biplanes
Multiplanes
All wing aircraftV . T . O . L . , S . T . O . L . , Convertiplanes. (Not rotorcraft)
Other types including CanardSeaplanes
Float seaplanes (subdivide as 533.652)
BoatSki
Amphibians.655/7 may be subdivided as .652 if requirede . g . 533.655.35 all wing boat seaplanes

533.66.661.661.2.662.662.2.662.21.662.22.662.3.662.6.662.62.662.63.662.64.662.7
.663
.664
.665
.666
.666.2.666.4.666.6

Theory of other flying machines
Helicopters
Autogyros
Airscrews
PropellersSingle propellers
Co-axial, contra rotating. Tandem propellers
F a n s . Ducted fanslifting a i r s c r e w s . Helicopter rotors
Axially driven
Circumferentially driven. Jet driven rotors
Autorotating. Driven by the relative windWindmills
Cyclogyros
Ornithopters. Aircraft with moving wings.(except rotorcraft)
MissilesMachines for nonpowered flight
Parachutes
Kites
Gliders533.68

Aerodynamic study of bodies moving on or near the ground,deck or water
Ground. Taxying. Forced landing. Ground effect.682

- 137
Appendix B (Continued)
533.683.685
533.69533.69.001.1.001.5
.031
.032
.033
.034
.035
.036
.037
.048
.048.i.048.2.048.3.048.5533.692

DeckWater.

Ditching

Aerodynamics of aircraft elements
The following analytical subdivisions are particularly
applicable here.
TheoryExperiment
Aspect ratio
CamberTaper and twist
Thickness distribution
Dihedral
Surface conditions
Fineness ratio
Airflow variables
Aerodynamic loading
Pressure distribution
Downwash, wakes
Gust loads. Acceleration s t r e s s e s . Vg tests.1.2.3.4.5.6

Wing sections
DesignatedDiamond and hexagonal
Biconvex and circular arc
Flat plate
WedgesSection varying along span.1.2.3.4.5.6.7.8.9

Complete wings
Swept ) Use only when planforms below are notUnswept) the subject of the report
Delta. Double delta. Diamond. Arrowhead
Sweep varying along the span. Crescent. Cranked. M & W.
Elliptic. Circular
RectangularTrapezoidal
Ring wings
Other e . g . aeroisoclinic, cruciform

533.693

- 138 Appendix B (Continued)
High lift devices.

533.694.2.21.22.23.25.26
533.694.5.51.511.512.513.52.53.531
.532
.533
.54.541.542.58

Controls

F l a p s . Slats. Slots
Split
SlottedDive flaps. Brakes
Leading edge flaps. Chord extensions. Drooped
Leading edge
Slats
Control surfaces
Lateral controls
Ailerons, trailing edge
"moving wing tip
Other types. Spoilers
Elevons
Longitudinal controls
Fixed tail plane
All moving tail plane
Elevators
Directional controls
Fins
RudderTabs
Jets used as high lift devices or controls(If the jets a r e used purely as boundary layer control
devices they should be classified at 533.694.72).7.71.72.73
533.695

Boundary layer control
SuctionBlowing
F e n c e s . Vortex g e n e r a t o r s . End platesComponents in combination( F o r interference between aircraft and ground or watersee 533.682)
F o r interference between parts of an aircraft, combine
the following as appropriate in ascending numericalo r d e r , e . g . interference between propeller and tailplane533.695.45, interference between wing and tailplane 533.695.14^

- 139 Appendix B (Continued)
533.695.1.2.3.4.5.6.7.8.9533.696.2.3.4.5.6.7
533.697

Wing
Body
NacelleTail, vertical and horizontal
Propeller, rotor
External stores, drop tanks, pods, weapons carriedexternally, landing gear.
Jet or exhaust
Cascades. Multiplanes
Protuberances. R e c e s s e s . Doors. Bays (for dropping,landing gear retraction, etc.)
BodiesSpheres
Cylinders
Cones
Other circular cross section.
Non-circular cross section
Designated bodies

Bodies of revolution

Internal aerodynamics(For energy l o s s e s , colon appropriate subdivisions of532.55 to appropriate subdivision of 533.697).2.23.24.242
.244
.25
.3
.4
.5
.6

Intakes
Nose intakes
Side"Scoops
Submerged
Wing leading edge intakes
Ducts. Passages. Bends. Diffusers(See also 533.6.071,1 for wind tunnel diffusers)
Nozzles. Jets
(See also 533.6.071.1 for wind tunnel nozzles)
Ejectors. Jet pumps. Outlets. Bleeds
Bodies in ducts(See 533.662.3 for ducted fans)- 140 APPENDIX B (Continued)
ALPHABETICAL INDEX TO U.D.C.
629.13.067
629.13.012.531
629.13.012.59
621.315.2
629.13.014.5427.4
624.071.2
621.315.212
669.73621.822.722
621.822.822
624.042518
518.4
518.12517.3
519.21519.3
533.6.071.43
53.089.6
536.6
533.69.032
533.692.032
771.3
621.397.3
621.835
621.835.001.1(71)
533.652.9
629.13.012.134.4
533.695.9
532.6
621-415

Cabin pressurisation s y s t e m s . Aircraft engineering.
CabinsT Aircraft s t r u c t u r e s .
Cabins, p r e s s u r i s e d . Aircraft s t r u c t u r e s .
Cables. Electrical engineering.
Cables. Flying controls. Aircraft engineering.
Cables. Structural elements. Civil engineering.
Cables, coaxial. Electrical engineering.
Cadmium. Metallurgy.
Cages. Ball bearings. Power transmission.
Mechanical engineering.
Cages. Roller bearings. Power transmission.
Mechanical engineering.
Calculation. Loads. Structures. Civil engineering.
Calculation. Mathematics.
Calculation, graphical. Mathematics.
Calculation, numerical. Mathematics.
Calculus, integral. Analysis. Mathematics.
Calculus of probability. Mathematics.
Calculus of variations. Mathematics.
Calibration. Flow problems. Wind tunnels.
Calibration. Principles of measurement. Physics.
Calorimetry. Heat. Physics.
Camber. Aircraft elements. Aerodynamics.
Cambered aerofoil sections. Aerodynamics.
C a m e r a s . Photography.
C a m e r a s , television. Television. Electrical engineering
C a m s . Power t r a n s m i s s i o n . Mechanical engineering.
C a m s . Power t r a n s m i s s i o n . Mechanical Engineering.
Design.
Canada.
C a n a r d s . Aerodynamics.
Canopies, aircraft. Aircraft s t r u c t u r e s .
Canopies, aircraft. Interference. Aerodynamics.
Capillarity. Mechanics of fluids. Physics.
Cantilever plates. Thin plates. Materials shapes.
Mechanical engineering.

- 141 Appendix B (Continued)
621.319.4
532.66629.13.012.217
546.261661.665546.26621.3.047.43
621.43.019.942
661.97661.993546.262.3
547.58547.46621.785.51
621.785.52
629.138.4
629.13.071.55
621.394.441
623.822.7
533.695.8
621.785.51
621.785.5
669.14.018.462
669.13669-14669.14-14621.746 *
621.746.585
621.746.57621.746.045
621.746.045
669-14669.018.28
541.128678.044

Capacitors. Electrical engineering.
Capillary tubes. Capillarity. Mechanics^of fluids.
Physics.
Capsules, escape. Aircraft structures.
Carbides. Carbon. Inorganic chemistry.
Carbides. Chemical technology.
Carbon. Inorganic chemistry.
Carbon brushes. Current collection. Electricalengineering.
Carbon deposits. Combustion problems. Internal
combustion engines.
Carbon dioxide. Chemical technology.
Carbon monoxide. Chemical technology.
Carbon monoxide. Inorganic chemistry.
Carboxylic acids, aromatic, Organic chemistry.
Carboxylic acids, polybasic. Organic chemistry.
Carburising, case. Heat treatment. Workshoppractice.
Carburising, pack. Heat treatment. Workshoppractice.
Cargo aircraft. Aircraft engineering.
Cargo weight. Aircraft engineering.
Carrier waves. Telegraphy. Electrical engineering.
Carriers, aircraft. Warships. Naval engineering.
Cascades. Interference. Aerodynamics.
Case carburising. Heat treatment. Workshop practice.
Case hardening. Heat treatment. Workshop practice.
Case hardening, steel. Metallurgy.
Cast iron. Metallurgy.
Cast metals. Metallurgy.
Cast steel. Metallurgy.
Casting. Workshop practice.
Casting, arc. Workshop practice.
Casting, centrifugal. Workshop practice.
Casting, investment. Workshop practice.
Casting, lost wax. Workshop practice.
Castings. Metallurgy.
Casting alloys. Metallurgy.
Catalysis. Chemical mechanics. Physical chemistry.
Catalysts. Macromolecular materials.