Evening star., 1923-10-07
Continued from First Page.)

made for both the Army and Navy
and the results are. applicable, to the
design of civil as well as military
types of airships. i.
The tests were made at Langley
memorial aeronautical laboratory at
Langley Field, Va. This is an Army
field. q section of which has been
set aside for this committee.
The report now being written is
based on actual flight tests which
followed wind tunnel tests on models
those two tests being checked against
each other.
The tests were Sected by F. Fl.
Norton. chief physicist in charge or
free fight experiments. He Is son
of Prof. Norton OF Massachusetts IN
stitute of Technology. and through
out the world war worked at Langley
Field for the National AdFlsoFy Soii1-
mlttee for Aeronautics.
war Veteran is Tester.
The flights were performed by
Chief Test Pilot Thomas Carroll OF
New Haven. Conn, who is a. lawyer
BY profession and a graduate or o,
C;eorgetown University. he was win VII,
the Lafayette Eseadrile during the
This report is on the air pressure
~ surface Of the wings during
Eight and at all stages OF oiiteieal
sneeds and rnaneuyers-the loop, nose
dive. spiral. barrel roll zimmerman
turn, etc. . T., ,,;o
.,h,,m Of charts showing the varls-
tion and strength Of pressure, ranginS
from 100 pounds per square 1907 70
| 2lO pounds per square 1901. III o'n e
@TTasi cordei pressure Sns Of 21s pounds down.
ward on the wing and suction o.
io) mounds on the same part tLne
entering edge) Of the wing undeF
different conditions Of flight.
Use Special Devices.
These charts are freed entirely
from the human element, WniGn -
might make a mistake. stake .,tnnatic tne ua re-. -
cording Instruments. specially oe.
signed for the purpose and sxistins
nowhere else in the world. With tne
DEVELOPMENT of these instruments tne
| .ombat views of personal preludlces
Of pilots based merely on their pei
sonal observations or reactions III
| flight. Sos+ared
developments or new ,yp ,ypao,,ad "a
n M n
: resnlt of such personal reactions OF
niiots Thus il will be seen tnat
witS a more general use of these IN :.
struments in testing new types o1
airplanes the true value OF ard NV res,,it
tn The saving of many millions OF
| dollars, and probably wortn-"hiie
progressive ideas.
| The tests just completed We're Hlaue
IN the Thomas-Morse pursuit type
| sirniane. which is the official Army
| omrsuit plane. They will be CON
| tinued on the best pursuit type ar
| nIanes of England, France ana Yer
| many-the British SEQ, the frEnGh
ker D VI.
Stronger Wings Likely
The startling knowledge of Jus,
| asere and how great the strain is on
airnlane wing surfaces will no douot
cad to the strengthening OF tne
! structure and Improvement IN oes,sm
Of all types of airplanes by the army
and Navy and aircraft mahuiac'oiois
These experiments followed a com,
| .,rebensfye study of taking OF and
landing an airplane, the report on
which was also made by In jno,aa rasnit Of
N Investigation made at the Langley
,ahorafory of the National ADVISORY
Cn,nn,ittee for Aeronautics for the
purpose OF discussing ths Iious
mathods of effecting the ke-on ana
.he landing of an airplane. and to
make direct analysis Of a,as the con eo9taGr a1r
sneeds during these maneuvers.
THE recording instruments deyei-
oped at the laboratory were USED IN, IN
thsm were made the basis, OF COM :
paratiye study Of a the ftSs two taihi9i,
| nna the tail-low methods) and OF
var various types of landings. It Is be.
tieved that this Is the first time that
an accurate record has been ohtaine
aF the movements of the controls
during importan. Isneuysss; a., and ;ra1e the
| ~ ract that they were taken syn
| chronously with records OF the air
| sneed and acceleration.
| Value to Student Pilots.
| The records themselves should be
of considerable value to student
l pilot In enabling him 10 visualize the
! movements Of the controls and ths