Index to U.S. Army Air Corps Information Circulars. Part I. Heavier-than-air Circulars Nos. 1 to 600 inclusive. Part II. Lighter-than-air Circulars Nos. 1 to 157 inclusive.

              File C 13/117/1928/May 15
w 87.11/2 :
6/600
AIR CORPS INFORMATION CIRCULAR
PUBLISHED BY THE CHIEF OF THE AIR CORPS, WASHINGTON, D. C.
Vol. VI May 15, 1928 No. 600
INDEX
TO
UNRESTRICTED
U.S. ARMY AIR CORPS INFORMATION CIRCULARS
. j •
•
PART I-Heavier-than-Air Circulars Nos. 1 to 600 inclusive
PART II-Lighter-than-Air Circulars Nos. 1 to 157 inclusive
UNITED STATES
GOVERNMENT PRINTING OFFICE
WASHINGTON
1928
Ralph Brown Draughon
LIBRARY
JUL - 9 Z013
Non·Depoitory
Auburn University
' ,,
..i l
...
.-
CERTI.l'ICATE: By direction of the Secretary of War the matter contained
herein is published as administrative information and is required for the proper
transaction of the public business.
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I
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AUtiU i-;1 Ln '"' ~"~·,
RAl.PH BROWN DRAUGHON lbKARY
BURN UN\V8SITY. AlAel'MA 3,Q~. 4
RAtPH BD0" '" '"'"tt!JGHO
AUP'"
' .1
lNDEX TO UNRESTRICTED UNITED ST A TES ARMY AIR
CORPS INFORMATION CIRCULARS
PART 1.-HEAVIER-THAN-AIR CIRCULARS
Nos. 1-600, Inclusive
SUBJECT LIST
A
1 S "Air la ,, Information
A- • ee p ne. Circular No.
ABC. See "Engines"__________ ______ ___ ___________________ ________ _______________________ __ _ 256
AC. See "Spark Plugs."
Accessories, Instructions for the Storage of Airplanes, Engines, Their Parts and Accessories____________ 256
Accidents. See "Crashes."
A. E. F., Final Report of Chief of Air Service to the Commander in Chief___________________________ 180
Aerial Bombardment. See "Bombardment."
Aerial Navigation, Instructions, Provisional_ __ -------- - ----- - --------------- -- -- ----- ----------- 82
Aerial Observation:
For all Arms--------------------------- - --- -- ----------------- -- --- ---------- ----------- 85
For Target Practice at Fort Monroe, Va------ - --------------------------------------------- 142
Methods in Observation Practiced with Fifth Corps, First American Army______________________ 115
Aerial Photographs, Use in Topographic Mapping- --- ---------------------------- --- ------------- 184
Aerial Photography, Manual_ ___________ ______ __________________________________________ .!_____ 96
Aerial Regulations, International_ __________________________________ _____ _ ---- _____________ ----_ 566
Aerial Tactics_________ ___ ____ _______________ ________________________________________________ 88
Aerodynamical Balance for P- lB and P-5 Airplanes by Standard Analytical Method for Determination
of C. G. and M. A. C__ _ _ _ _ _ _ _ __ _ _ _ _ _ _ _ _ 593
Aerofoil. See "Airfoil."
Aeromarine. See" Airplane."
Aeromarine. See "Engine."
Aeromarine Spar, Static Test of Duralumin Spar _________________________________ _____ - - _ --_ __ 524
Aeromarine Propellor, Destructive Whirling Test ______ ----------------------------------------·-- 137
Aeronautical Book and Magazine List__________________ ________________________________________ 21
Aeronautics, Meteorology and Aeronautics______________________________________________________ 77
Aileron, Effectiveness___________________________________ _____________ __ _______________________ 454
Aileron, Wind Tunnel Test of Aileron Characteristics___ ________ __________________________________ 535
Air Bleed, Test of Back Suction and Air Bleed Type Mixture Controls_____________________________ 368
Air Coolers, Test of________ __ ____ _____ _____________________________ _________ ______ ______ _____ 399
Air Flow:
Around a Rotating Cylinder _______________________________ _____ ____________ - ___ - _____ - __ _ 510
Visual Study of Flow Discontinuity, Cylindrical Camber Airfoil________________________________ 564
Visualization of Air Flow ____________________________ ------_______________________________ 148
Air Intakes, Comparative Effect on Engine Operation ___ --------------------------------------- - 286
Air Mail. See "Airplane."
Air Medicine. See " Medical."
Aircraft Development since the Armistice ________________________________ ___________ --- ---- -- --- 402
Aircraft Fire Prevention_________________________ __________ _____ ______________________________ 592
Airdrome Landing Field Flood Light Type A-1, Handbook of Instruction______________ ___ __________ 583
Airfan, Head Resistance Measurement _________ -- - -- ______ -------- ______ -- ------ -- _ --- __ ---- --- 63
Airfan, Type FA-9--------------------------------------------------------------------------- 62
Airfoil:
Dayton-Wright Nos. TT-1 and TT-2, Dayton-Wright Nos. 5 and 6---------------------------- 328
Effect of Sweep Back and Sweep Forward--------------------------------------------------- 547
Gottingen No. 221----------- ----------- ----- ----- ------------------------------------ - -- 267
(1)
2
, . . Information
A1rfo1l-Contmued. Circular No.
Gottingen No. 244 _ _ _ _ _ _ _ _ _ _ 248
Gottingen No. 255 _____________________________________________ ___ ________________ - - -- -- _ 455
Gottingen No. 387-- - -------- - --------------------------------- ---- ---- -------- ---------- 328
R. A. F . 19--- -------------------- ----- ------------------------------ --- ----------- -- -- -- 248
Section Properties of a Series of Aerofoils Suitable for Propeller Design ________ ___ _____________ _ 597
Springer No. 3------ - -- -- ------------------------------------- - -------------------------- 248
U.S. A--- - --------------------- --------- -- ---- -------- -- ----- - ------------------------- 198
U.S. A. 25, 26, 27, 28, 29--- ---- -------- - --------------- ~---------- - --------- ------------- 49
U.S. A. 27 A, B, and C----- - - ---- --------------- - ----------- -- --- ----------------------- 224 .
U. S. A. 27-C _______________ __ . ____________ ___________ ___________ ____________ ---- ____ __ _ 334
U. S. A. 27-C_ _ _ _ _ ___ __ ____ __ __ __ _ __ ____ ________ __ ____ __________ __ __ __ __ ____ _ _ _ ___ 455
U.S. A. 30, 31, 32, 33, and 34------------- --- --------------------------------------------- 244
U.S. A. 47 (and Supplement)_____________ ______________ ___ __________________________ __ ___ 511
36 by 6; Wind Tunnel Test (see Appendix)------------------ -- ---~------------------------ 478, 532
Visual Study of Flow Discontinuity on Cylindrical Camber AirfoiL _ _ _ _ _ 564
Wind Tunnel Test of Clark Y, Clark Y-15, Clark Y- 18, Clark Y- 21, Gottingen 398, and S. T .
Ae'- 27a, 6"X36" Airfoils, Tests Nos. 233, 234, and 237 __________ __________ __________________ 573
Airfoil Data, American and British Airfoils____ _____ _____________ ___ ________________ ____________ _ 197
Airfoil Propeller, Shift of Angle of o-Lift on Propeller Aerofoils____________________________ ______ _ 147
Airplanes:
A-1, Wind Tunnel Test_ _____________________________________________________________ ____ _
A0-1, Performance Test _____ ____________ _______ _____ _______________________ ------ ______ _
AR Morane Saulnier, Performance Test_ _____ _____________________________________________ _
Aeromarine PG-1, Static Test ___ ___ _____ _______________________ _____ _ ------ _____ _________ _
Air Mail, Static Test of Bellanca DH ____________________________ _________________ ______ ___ _
Alouette, Stress Analysis _ ___________________ _____ ___________ __ _____ _______ ________ ______ _
Ambulance, Wind Tunnel Test_ __________________________________________________________ _
Atlantic A0-1, Performance Test _______________________________ . __________________ ~ _____ _
Atlantic C0-8, Performance Test ___ ______ __________ ______________________________________ _
Bellanca DH, Static Test_ _______________________________________________________________ _
Boeing-
463
506
285
365
518
520
463
506
522
518
Pursuit, Performance Test____________________ ___ __________ __ __ ______ _____ _____ _____ ___ 460
Bomber, Wind Tunnel Test of Heavy Bomber Study __ ___________ ___________________________ _
C0-1,.Wind Tunnel Test_ _________________ __ _______________________ _____ ________________ _
C0-2A, Wind Tunnel Test _________________________________ ____________________ _____ ____ _
C0-4 Fokker-
531
321
453
Performance Test ______________________ ________________ _____ _______________________ 415, 507
Performance Test with Nose Radiators____________________________________ __ ___________ 457
Performance Test with Side Radiators__________ ________________________________________ 456
C0-5, Performance Test _________________________________________________________ ____ ___ 452, 534
C0-6, Static Test______________________________________________________________________ __ 508
C0-8, Atlantic ___ _____ _____________________________ __________________ _____________ ______ 522
Consolidated PT- 1, Performance Test _________________________ ___________________________ 526, 527
Consolidated PT- 1, Static Test____________ ___________________ _____________________ ________ 559
Cox Heinke!, Static Proof Test of Aileron, Stabilizer, and Elevator__ ___ _______________________ _ 514
Cox Klemin TW- 2, Static Test_______________________________________________ _____________ 437
Curtiss-
JN-4, Impact Test of Tail Skid and Landing Chassis __ __________________________________ _
JN-6, Cooling System Test with Packard lA-744 Engine and Side Radiators ___ ------------
J -6H, Methods of Correcting the Longitudinal Balance __________ -------- ____ -----------
NBS-1, Performance Test ____ _________ _______ _______________________ --- --------------
NBS-4, Torsional Test of Fuselage _____ ___ ____________________________________________ _
Night Pursuit, Static Test __________ ________ ____ _____ _____________________________ ___ _
Orenco "D," Performance Test _________________________________________________ __ : ___ _
"D" Orenco, Performance Test ____________________________________________ ______________ _
D-VI-B Roland, Performance Test _________________ ________ _________________ _: ____________ _
D-VII-Fokker-
409
294
27
435
513
266 .
306 .
306
132
Cooling System Flight Test_ _____________________________________________ ~- _________ ~·-' .23~
Performance Test with Liberty Six Engine______________________________________________ _ ' 1
· 71°
Performance Test with Packard "1237" Engine ___________ ~ ___________________ - ~~· -- ____ ~ -· · 310
Static Test of Chassis__ __________________ __________ _____________ ___ __________________ 29
Test on Steel Tubing and Wing Beams ____ ------ - ------- ________ --------- -- ------------ 104
3
Information
Airplanes- Continued. Circular o.
D- VIII- Fokker, Performance Test with 110 I-I. P. Oberursel Engine_ ____________ _______ _______ 288
D-IX- Fokker, Performance Test_ __________ __ ______________________ ___ ___ ______ ___________ 413
DB- 1, Wind Tunnel Test_ ____________________________________________ ____ _________ _____ 467, 475
DH- Bellanca, Static Test_ ___ ____ _________________________________________________________ 518
DH-4- ..
Cooling System Test with Experimental Auxiliary Radiator___ ____________________________ 241
(Dayton-Wright) Static Test of Fuselage_____ ________________________ __ __ ____ _____ _____ 34
Economy Test__ ________ _____ ____________________________________________________ ____ 461
Performance Test, Equipped as Corps Observation Airplane______ __ _____ _______ ___________ 287
Performance Test with 300 H.P. Hispano-Suiza Engine_ _______________________ _____ _____ 155
Radiator Tests___ _______ ___________________________________________________________ _ 528
ta tic Test of Landing Chassis ______ _______________________ ________ ___________________ 38
Static Test of Wing Cellule_ _ _ _ _ _ _ _ _ __ __ _ __ _ _ _ _____ ___ ___ __ __ _ _ _ _ __ _ ___ _ 36
Take-off Characteristics _________________ · _ _ _ _ _ _ _ _ _ _ 480
DH- 4B-Cooling
System with Hispano-Suiza 300 H. P. Engine___________________________ __ _______ 156
Fuel Consumption during Climb with Form "D" Supercharger___ __ _______ ____ ____________ 398
Fuel Consumption Test___ ____ _________________ ______________ ___ __ __________________ __ 346
Interference Tests on Model and Propeller ________________________________________ _____ _ 582
Wind Tunnel Test__________________________ ___ ___________________________ ___________ 355
Wing Flap Test of Wind Tunnel Mode!_ _______________________ ___ ___________ _________ __ 552
DH-4C, Cooling System Test_ __ -------------------------------------- ------------ -- -- ---- 271
DH-4M2 Mail, Performance Test_________________ _______ ________________ ______ ____ ___ _____ 386
DH-4M2, Static Test of Fuselage__ __ ____ ___________ __ _________ _______ ___ ___ ________ __ _____ 512
Dayton-Wright TA-3, Performance Test_ _________________________________ ____ _______ ___ :.___ 441
Dayton-Wright TA-3, Static Test________________________________ __ ___________ _______ ____ _ 388
Design, Performance and Design Charts____________________________________________________ 183
Determination of Best Wing Loading for Single-Seater Pursuit Airplane_________________________ 315
E-8 Vought, Performance Estimate__ __ ___________ ____ _____________________________________ 176
Elias BS-3, Torsional Test of Fuselage_____________________________________ _______________ 517
Elias TA-1, Performance Test_______________________ _________________ ________ ________ _____ 412
Endurance Notes ________ ______ ___________________ ---.--______________________________ ____ 210
Engineering Division C0-5, Performance Test_ __________________________ ___ ___ ____________ 452, 534
FVL--8 Pomilio, Performance Estimate __ __________ ___ __ -------------___________________ ____ 221
Fokker C0-4-
Performance Test __________________________________________________________________ 415, 507
Performance Test with Nose Radiators_ _______________ __ _____ _____ ____________ ___ _____ _ 457
Performance Test with Side Radiators ______________ .: _________________________ ._____ _____ 456
Fokker D-VII-Cooling
System Flight Test__ ________ ___ ___________ _________ ______________________ ____ 233
Performance Test with Liberty 6 Engine _-- - --- ----- - - -- -- ---- ------------ - ----- - ------ - 71
Performance Test with Packard 1237 Engine_______ __ ___________________________________ 310
Static Test of Chassis _________________________________________________ -------________ 29
Test on Steel Tubing and Wing Beams________ __________ _____________ __ __ _____ _________ 104
Fokkei:-
D-VIII, Performance Test_ _____ ___________________________ _________ _____ _____ ___ ___ _ _
D-IX, Performance Test _______ __________________ ______ ___ _____________________ ____ "-
P W-5, Static Test of_ _________________________________________________ ------ _____ _ ---
PW-5, Wind Tunnel Test_ _______________________________ ______ ______________ _______ _
PW-6, Performance Test ___________ _________ __ ___ ________________________ ------ ____ _ P W-7, Performance Test with Curtiss D-12 Low-Compression Engine ______ _____ ______ ___ PW-7, Static Test ____ __________________ _________ ______ __ ----------- ___________ ____ _ T-2, Investigation of the Structural Strength ___ ___ ______________ ______________ ______ - - - -
T W-4, Performance Test_ ________________ __ ______________ ___ __ ____ ______ _______ ___ __ _
GA-2A, Wind Tunnel Test_ ______________________________________________ ______ ------ ____ _
GAX, Performance Test ___________________ __ ______ _____________________________ ____ ____ _ GAX-1, Static Test of Chassis----- -- ---------------- ---- - - ---- - - -- --------------------- - -
GAX-1, Static Test of Wing Structure _____________________________ __________ ____ __ ___ ____ _
GH-11 LePere, Performance Estimate ______________ ___________________ ---- - _____ • _____ • __ _
288
413
406
424
413
529
491
420
414
476
193
171
228
219
4
Airplanes-Continued. Information
Gallaudet- Circular No.
DB-1, Wind Tunnel Test----------------------------------------------------------- 467, 475
PW-4, Static Test_ ___ -------- ________ _____ _ ----- ___ -------- __________ - - - - - - -- --- ---- 417
PW-4, Wind Tunnel Test_ _______________________ __ ______________________ -• ___ --- - - - - - 472
Huff-Daland-
Performance Estimate of Bi place Training Plane ____ ____ __________________ ______ - - -- - - _ - -
TA-2, Performance Test with Curtiss OX- 5 Engine _____________________________________ _
TA-2, Performance Test with Lawrance "R" Engine ___________________________ __ ______ _
TW-5, Performance Test with Wright "E" Engine _____________________________________ _
JL-6. See "Airplane, Junkers."
JN- 4, Impact Test of Tail Skid and Landing Chassis ________________________________________ _
JN-6, Cooling System Test with Packard lA-744 Engine and Side Radiators __________________ _
JN-6H, Methods of Correcting the Longitudinal Balance _______________ ----- ________________ _
JV-Martin, Physical Tests on K Bar Struts _________ ·--------------------- ----------- -------
Junker-
Biplane, Investigation of Wings ___________________ ----- __ ____ ______ --------- _________ _
L-6, Static Test __________________ ___ _______________ _______ __ __________ --------------
L-6, Stress Analysis _________________________________________________________________ _
L-6, Wind Tunnel Test _________________ ~ ______________________ -------- ______________ _
SL-6, Performance Test __________ ----- ____ ---- __ ---------- __ ------ __________ ---------
Laddon, Wind Tunnel Test of Laddon Night Pursuit Airplane ________________________________ _
LePere, Cooling System with Side Radiators _______________________________________________ _
LePere GH-11, Performance Estimate _____________________________________________________ _
Loening-
M-8, Cooling System Test ___________________________________________________________ _
P A-1, Static Test (see Addendum) ____________________________________________________ _
PW-2, Performance Test _ _________ _____________ _____________________________________ _
PW-2A, Performance Test_ __________________________________________________________ _
PW-2B, Performance Test ___________________________________________________________ _
XC0-8, Performance Test, Equipped with Loening Wings--------------------------------
Monoplane, Performance Test ___________________________________________ --------- ____ _
M-8 Loening, Cooling System Test ____________________ -:_ __________________________________ _
MB-2, Martin Bomber, Cooling System _________________________________________ __________ _
MB-3 Thomas Morse, Performance Test _ ___ ___________ _______ ------ ______________________ _
MB-3 Thomas Morse, Wind Tunnel Test __________________________________________________ _
MB-6 Thomas Morse, Static Test-------- - ----------- ~ ------------- ----------- -------------
Mail DH4-M2, Performance Test ________________________________________________________ _
Martin Bomber-
296
407
411
499
409
294
27
101
230
360
332
367
173
33
299
219
206
358
434
416
433
522
50
206
264
40
468
362
386
MB-2, Cooling System_______________________________________________________________ 264
NBS-1, Performance Test ____________________________________ -~- ___________________ 290, 435
NBS-1, Torsional Test __________ ------ _________ ----------- _______ -----------_________ 515
Static Test of Elevator Controls_______________________________________________________ 424
Test of Davis 3-inch N onrecoil Cannon_________________________________________________ 342
Martin JV, Physical Tests on K Bar Struts------------------------------------------------- 101
Martin Torpedo Airplane, Performance Test_ _____________________________________________ .__ 139
Messenger- ,
Performance Test------------ --- - --- - - --- ---- --- ------------------------ ---------- -- -
SWtaintidc TTuensnte-l- -T--e-st- _-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-__-_- -_
Morane Saulnier Type AR, Performance Test_ ___ ---- -------- ________________________ -------
NBS-I-
280
270
43
285
Curtiss, Performance Test______ _____ ___ ____ _______________________ __________ ____ ______ 435
Martin Bomber, Performance Test________ ______ __ ____ ______ ___ _____________ ___________ 290
Martin Bomber, Torsional Test________________________________________________________ 515
NBS-3 G. Elias, Torsional Test of Fuselage_ _______ _____________ __ ___ ___ ____________________ 517
NBS-4, Curtiss, Torsional Test of Fuselage_________________________________________________ 513
Night Pursuit, Curtiss, Static Test __________________________________ ------------___________ 266
Night Pursuit PW-2, Design and Stress Analysis of Wings__ __________________________________ 150
0-2 Douglas, Static Test_________________________________________________________________ 554
Ordnance D-Armament
Test---------------------------------------------------------------------- 14
Cooling System---------------------------------------------------------------------- 144
ferformance Test~ _______ - ~ ________ · ____ ~ _____ ~ ___ ~-- ______________ ~-.,.,-.,.,.,-.,._.,_~___ 5~
5
• • Information
A1rplanes--Contmued. Circular No.
Orenco "D" Curtiss, Performance Test_ _____ __ _____ ___ ___ _____________________ ------------- 306
P-lB and P- 5, Aerodynamical Balance by Standard Analytical Method for Determination of C. G.
and M. A. C __________ ______ ____ __ __ ______ ____ ___ ____ __ _____ ______ ___ ___ ___ __ _____ ,__ __ 593
P A-1 Loening, Static Test (see Addendum) _____ ____ _____ _____ _____ _____ __ _______________ __ __ 358
PG-1, Wind Tunnel Test ____ ------ - - ________ _____ __ __ ______ -- - ----------------- - - ------- 166
PG-1, Static Test _________ - - ---- ____________ _______ ____________________ - ----- - _ _ -------- 365
PT-1, Performance Test_------ _______________ _____________________ ----------- - --------_ 526, 527
PT-1, Static Test _________________________________________________ ------------ ______ ----- 559
PW-1, Structural Design of Cabane Struts-------------------------------------------------- 172
PW-1, USA-27 Wings ___________________ ______________________________________________ --- 225
PW-2, Loening, Performance Test_______ _________ _______________ ___ __ ______________________ 4l3,4
PW-2, Design and Stress Analysis of Wings----- - ------ - ---- - -- - -- - ------ - ------------------ 150
PW-2A, Performance Test______ __ __ ____ ______ ____ ___ _____ ______ __ ______________________ __ 416
PW-2B, Performance Test- ------- - ---------- - ---- - - -- ---- - ------------------------------ - 433
PW-4, Static Test___________ ________ ____________ ________________________________________ 417
PW-4, Wind Tunnel Test _______ ________ _____ _____ ______________________ __________________ 472
PW-5, Static Test__ ___ ___ __ _____ ____ ___ _________ __ ____ __ ___________ ______ _______________ 406
PW-5, Wind Tunnel Test_ ____ __ _______ ___ _______ _____ ___________ _________________________ 474
PW-6, Performance Test ___ ____ ____ __ ___ ____ _____ ___ ______ __ ______________________________ 413
PW-7, Static Test ____ __ ___________ _____ _____ _____ _______ __ ______________________________ 491
PW-7, Performance Test with Curtiss D-12 Low-Compression Engine_________ _________ _____ ___ 529
Performance-
Empirical-Theoretical Method of Com para ti ve Prediction of Airplane Performance__________ 68
Performance and Design Charts ____________________________________ -- - _ --- - _ - - - -- - __ _ 183
Performance from the Standpoint of Modern Conception of Drag__________________________ 560
Theoretical Method of Analyzing and Predicting Airplane I?erformance_____________________ 553
Phillips "Alouette," Stress Analysis ______________________ ________________________________ -.,. 520
Pomilio FVL-8, Performance Estimate___________ ___ ___ ____ ___ _____________________________ 221
Pomilio PVL-8, Static Test of Wing Cellule with Unequal Loads on Right and Left Wings________ 25
Pursuit--
Comparative Study of Type I Airplanes with Various Power Plants __________ ,:_____________ 307
Design Characteristic for Most Suitable Pursuit Airplanes_________________________________ 436
Determination of the Best Wing Loading----------------------------------------------- 315
Wind Tunnel Test of Laddon Night Pursuit Airplane_____________________________________ 33
Roland D-VI-B, Performance Test_ _____________________________ - - - - - - - - - - - - - - - - - - - - - - - -- - 132
8-6, Thomas Morse, Performance Test_---------------------------------------------------- 109
SE-5, Static Test of SkL-- - --------.-- - ----------------------- - --------------------------- 322
SL-6 Junker, Performance Test _____________________________ _______ - - - - - - - - - - -- - - - - - - - - - -- 173
Spad 13, Performance Test with 220 H.P. Wright Engine_________________ ____________________ 286
Spad 16-A, Performance Estimate with 236 H.P. Lorraine-Deitrich Engine_____________________ 153
Structures, Study of Dural and Steel for __________ __________ _________ - - - -- - - - -- - - -~ - - - - - - - - - 568
T-2 Transport, Investigation of the Structural Strength______________________________________ 420
T_A-1 G. Elias, Performance Test with Lawrance R-9 Engine____________________________ ______ 412
TA-2 Huff Daland, Performance Test with Curtiss OX-5 Engine______________________________ 407
TA-2 Huff Daland, Performance Test with Lawrance "R" Engine_____________________________ 411
TA-3 Dayton-Wright, Performance Test ______________________ ----------------------------- 441
TA-3 Dayton-Wright, Static Test ________ ______________________________ - --- - - - --- - -- - - -- --- 388
TA-4, Wind Tunnel Test ____________________________________________ -- - -- - - _ - - - - --- - - - -- - 455
TW-1, Test of Cooling System ________________________________________ - __ - - - - -- - ---- - -- - - 410
TW-2 Cox Klemin, Static Test------------~----------------------------------------------- 437
TW-4 Fokker, Performance Test _____ __________________________________________ --- - --- - -- - 414
TW-5 Huff-Daland, Performance Test ___________________________________________ - - - - _ -- - --- 499
Thomas-Morse-
MB-3, Performance Test _______ ____________ _____ ------------- _____ ------------------- 40
MB-3, Wind Tunnel Test _____________________________________________ - - - - - - --- - - - -- - 468
MB-6, Static Test___________________________________________________________________ 362
8-6, Performance Test _______________________________________________________ -------- 109
Tires. Su "Tires."
Transport, Wind Tunnel Test_ _____________ __________________________________________ -- _ 533
Transport T-2, Investigation of the Structural Strength __ ----------------------------------- 420
Type 1, Comparative Study with Various Power Plants--------------------------------------- 307
6.
lnformatlon
Airplanes-Continued. Circular No.
V-40 Fokker, Wind Tunnel Test ___________________ ----- ______ --- _______ _ - - - --- --- --- - - --- 472
VCP-1, Cooling System Tests with Annular Radiator_ ____ ____ __ ________ ------ -- - -- - ---- - -- - - 245
VE-7 Vought, Pressure Distribution over the Stabilizer__________________ __ ________ ______ ____ 419
Verville Racer, Wind Tunnel_ Test_ ____ _______ ____ _________ __ - _ - --- _____ ___ -- ----- - - - --- - -- - 107
Vo_ugllt-
E-8, Performance Estim11te _____________ _ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Y$-7, Pressure Distribution over the Stabili zer_ __ ------ _____ ---- - - - - -- -- -- -- _, -- - - -- - - - - -
_XV Navy Type, Performance Test_ ______ - -- - - --- - - - -- - -- - - --- -- - - - - - -- - - -- - - --- - - - - -- -
Weight, Structural Weight Analysis _____________________ ____ _____ _________ _____ -- __ --- - - - - -
· Wheels. See "Wheels."
XB-1-A-Comparative
Performance Test with High Compression Wright Model "H" and Packard "1237"
Engines- ------- ----- ----- ----------- -- ------- - -- ------ ------- ---- -----------------
Performance Test ------------------------ ------------------------------------------ - -
Static Test of Fuselage __ ____________ ________ -- - -- - - -- - -- - - - - - - - -- - - -- - - - - - -- --- --- -- - -
XV Vought, Navy Type, Performance Test ____________ ______ __ - - - - - - -- --- -- - -- -- - - --, -- - - - -
Air Service, Characteristics, Limitations, ·and Employment _____ - - - - - - - - - - - - - - - - - - - - - - -- - - - - - - - - - - -
Air Service ManuaL _________________________ ___ __________________ - ___________ ___ _ - __ - - - - - - - -
Airways and Landing Facilities __________________ __ _____ ___ ________ - - _ - - - - - - - - - - - - - - - - - - - - - - - - -
Alcohol-Gasoline Mixtures _______________________________ - -- - -- - -- - -- - - - - - - ---- - - -- - --- - - - - ---
Alcohol-Water Mixtures, Tables Showing Freezing Points and Specific Gravity _______ - ____ - - - - - - - - - -
Alloy Steels, Cause of Cracking during Dip Brazing ___________ ____ -----_ - _ -- - - - -- - - - - --- - -- - -- -- -
Alloys:
Copper-Silicon-Aluminum Alloys with and without Manganese ___ ____ _____ ____ _ - - - _ -- - - - --- - --
Physical a-nd Metallographic Properties of Copper-Zinc-Aluminum Alloys Containing Small Amounts
ofMagnesium ____ _____________ __________ __________________ ______________ _____________ _
- Metaliography of Sand Cast Aluminum Alloys __ _______ ___ _______________ ___ ___________ _____ _
Z-D Process for Treatment of Light Alloys to Inhibit Corrosion and to Minimize Porosity __ - - - - - -
Almen. See "Engine."
Alouette. S ee "Airplane."
Alsop, Test of Alsop AU-Spark Ignition Device _____ ____________________________ ____ - ___ - - - - - - - - -
1\,ltitude, Standard Altitude Chamber Test for Engines _____ ___________ ____________ __ ____________ _
Altitude,-Variation of Horsepower with Altitude __________________________________________ ______ _
Aluminum: -
Physical and Chemical Properties of luminum and Aluminum-Alloy Sheets-
Part ! ____ : ______________________________________________________________ _________ _ Part!! ______________________________________________ __ _______________ ____ __ _______ _
Part!!! _________________________________ ___ ________ __ _____________ ____ ____________ _
Aluminum Alloys:
Copper-Silicon-Aluminum Alloys with and without Manganese _______________ ____ __________ __ Metallography of Sand Cast Aluminum Alloys __________ ______ ___ __________ _____ _________ __ _ Physical and Metallographic Properties of Copper-Zinc-Aluminum Alloys Containing Small Amounts
of Magnesium _________________________________________________ , ______________________ _
Aluminum Bronze, Methods of Making Alurp.inum Bronze Castings __________ ______ -- r- ___________ _
Aluminum Solders---- -------------------------------------- ------------- --- ---------------~ -
Ambulance A-1, Wind Tunnel Test ___ ______________________ ____ ___ ____ _____ __________ ___ ______ _
Ammunition, Pyrotechnic Projector and Ammunit ion Submitted for Test_ __________________________ _
Ammunition, Test of French 37-millimeter High Explosive _______________________________ ____ ____ _
Analysis of Supercharging ____________________________________ __ _____________ _____ _______ ____ _
Angular, Method for Determining the Angular Setting of a Tail Plane ______ ___________ ____ ________ _
Angular Velocity, Controllability, Angular Velocity, and Dynamic Stability of an Airplane about the Axis
of Pitch---------------------------------------------------------------------- - --------- ---
An:ti-Knock, Elimination of Detonation by the Addition of Xylidine, Ortho-Toluidine, Benzol, and
General Motors Anti-Knock No. L ___________ _______ ______________________________________ _ Anti-Knock, Flight Test of Anti-Knock Injector ___ _____ ___________________________ _______ . _____ _
A0-1. See "Airplane."
Armament,-Test of Orenco Type D Biplane _________________ ___ ____________________ _____ ______ _ Armor Plate, Ballistic Properties of a Spacial Case-Hardening High Chrome- ickel Light Armor Plate __
Armor Plate, Cork and Air Spacing of Light Armor Plate __________________ ___ _______ _________ __ _ Aspect Ratio of Single-Bay Pursuit Biplanes _______________________ _____ _________ __ ______ : _____ _
Assignment, Observation, Selection, and Assignment _________ 7 _ 7 7 7 ;~ - ~ - ~~., __ -- -- - -- - - - -- ~-~ - ~ - " -
176
419
352
39
327
37, 65
338
352
72
84
404
450
178
295
385
393
449
448
18
106
92
123
208
235
385
449
393
376
298
463
389
19
195
102
418
319
372
14
234
242
260
12q
Atlantic. See- "Airplane." · ·
~.,
7
intormatloli
Circular No.
Automobile, Radio Equipped Autolllobile_ _ _ _ _ __ _ _ _ _ _ 185
Axial Loads, Critical Loading of Structural Members Subjected to Combined Axial and Transverse Loads_ 581
B
BI-A. See "Airplane XBI-A."
Back Suction and Air-Bleed Type Mixture Controls, Test of_______________________________________ 368
Baker & Lockwood, Performance of Hangar (Tent) Manufactured by Baker & Lockwood Mfg. Co____ 187
Balanced Rudders, Study oL __ _____ ____ ___ __ __ ____ ______ ____ ___ ___ _____ _______ __ ~ _ 586
Baldwin Cannon. See "Cannon." .
Ballistic Properties of a Special Case-Hardening High Chrome-Nickel Light Armor Plate ___ _________ ~ 234
Ballistic Properties of a Urano-Silico Nickel SteeL _ _ _ _ _ _ _ _ 186
Balsa Wood, Use in Plywood__________________________________________________________________ 473
Bamburg, Speed Measuring Station____________________________________________________________ 397
Barograph, De Bothezat Type" A"------------------------------------------------------------ 439
Bath, Heat Treating Bath Composed of Sodium Chloride, Sodium Carbonate, and Sodium Cyanide- .. -- 363
Battery, Liberty Storage Battery Endurance Test________________________________________________ 301
Beacon, 24-inch Revolving Incandescent, Air Corps Type B- 3- - ----------------------------------- 574
Beams:
Charts for Solution of Stress in Wing Beams_________________________________________________ 555
Deflection of Beams of Non uniform Section____________ _____________________________________ 213
Design of Plywood Webs for Box Beams---------------------------------------------------- 516
Effect of Routing on Modulus of Rupture and other Strength Properties_______________________ 240
Movements of the Points of Inflection on Beams under Various Combinations of Loads___________ 471
Precise Formulas for Restrained Beam with Axial Load of Compression ______________ ___ : ______ 591
Bellanca DH. See "Airplane."
Benz. See "Engine." .
Benzol, Elimination of Detonation by the Addition of Xylidine, Ortho-Toluidine, Benzol, and General
Motors Anti-Knock No. l_ ______________________________________________ - ___ - __ --- - - - __ --- - - 319
Bijur Ignition. See "Ignition."
Bijur Starter. See "Starter."
Biplane, Pursuit Single-Bay, Economic Limit in Aspect Ratio_____________________________________ 260
Blower Used in Tests of Air-Cooled Cylinders--------------------------------------------------- 345
B. M. W. See "Engine."
Boeing. See "Airplane. "
Bombardment:
Aerial Day Bombardment, Pilots and Observers _____ ------------------ -- -------------------- 141
Aerial Tactics, Observation, Bombardment, Pursuit-Combat ______________________________ -- _ 88
Tactical Manual of Aerial Bombardment_ _____________ ------------ _____ -------------------- 140
Bombardment Manual, Aerial:
Part 1, Introduction and Preface _______________________________ _______________________ -- _ 54
Part 2, Rules and ·Regulations------------- ------------------------------------------------ 55
Part 3, Organization of Training Department and Ground Training for Pilots and Bombers ___ - _ - - 56
Part 4, Flying Training for Pilots and Bombers______________________________________________ 57
Part 5, Operations (Service Squadrons) and Appendix____ ____________________________________ 58
Bomber. See" Airplane." .
Books, Aeronautical Book and Magazine List--------------------------------------------------- 21
Box Beams, Shear Strength of Plywood Webs of_________________________________________________ 587
Braender, Test of Braender Leakproof Tanks ___ ---------- ____ ---------- ______ ----- _____ - --- -- --- 113
Brass:
Dip Brazing with 80-20 Brass __________________________________________ - _____ - - - - - - - - -- - - - 203
Dip Brazing with High Melting Point Brass------------------------------------------------- 297
Forged and Cast ______________________________________________________________ : _________ 335
Brazing:
Cause of Cracking of Alloy Steels during Dip Brazing__ ______________________________________ 295
Dip Brazing with 80-20 Brass ______ _______ L------------------·----------------------------- 203
Dip Brazing with High-Melting Point Brass_________________________________________________ 297
Brewster-Goldsmith. See "Spark Plugs."
Bronze Castings, Manganese, Methods of Making, to Meet Air Service Specifications No. 11021____ ___ 275
Buzzer Starter, Fifty-hour Endurance Flight Test________________________________________________ 302
98093-28---2
8
c
C-1. See "Airplane." Information
C-8. See "Synchronizer." Ci rcular No.
Cadmium, Plating by Means of Udylite Process ______________ _________ ________ ___ _______ ----- -- -- 545
- Calculations, Standard Method of Engine Calculations ___ ---- _________________________ --- -- - --- --- 421
,/"" Cam. See "Engine."
Cam-Shaft, Comparative Mathematical Analysis of the Stresses in the Cam-Shaft Drive Gears of the
Liberty "12" and the Packard "2025" Engines_______________________________________________ 423
Cannon:
Baldwin, Ground Test of Baldwin 37-millimeter Cannon______________________________________ 215
Coventry, Ground Test of Coventry 37-millimeter Mark III Airplane Cannon______ ___ _____ ___ __ 226
Davis 3-Inch, Test of Davis 3-Inch Nonrecoil Cannon Mounted in Martin Bomber__ __ ___ ______ __ 342
Ground Test of Cannon Turret Mount______________________________________________________ 112
Ground Test of 2.95-Inch Airplane Cannon in Martin Bomber____________ ____ ___ ______________ 146
Tests of Modified Firing Mechanism for Baldwin 37-millimeter Cannon------------------------ 24
Test of 37-millimeter Automatic Cannon in Cannon Engine___________________________________ 32
Time Study of the Movement of the Firing Mechanism of the 37-millimeter Automatic Baldwin
Cannon--- -------- -------------------------------- ----------------------------- ----- -- 16
Cannon Ring Mount, Type" A" Test----------- ---- ----- ----------------------------- ---- ---- - 283
Carburetor:
Calibration of Jet Flow Carburetor _______________________________________ ___ --------- - ---- 243
Development and Test of Stromberg NA- Y5D for Cur t iss D- 12 Engine ___ ______ ___________ ____ 572
Development and Test of Zenith ED- 52 for Liberty " 12 " Engine_____ _________________________ 570
Effect of Fuel Head at Carburetor on Brake Horse Power and Brake Specific Fuel Consumption___ 336
Instructions to Designers_________________________________________________________________ 291
Metering Characteristics, Control of Carburetor by Supplementary Admission of Air____________ 292
Metering Jet Calibration __ ___ ______ ________ ___ ___ ~___________ ______ ____________ __ ________ 569
Mixture Controls, Instructions to Pilots_________ ___________________________________________ 257
Sediment Deposit in Carburetors ______ ---- ---___ _______ _______ ____________________________ 390
Setting for the Liberty Engine for Dirigible Use_ __ _______________________ ___________ ___ ___ __ 311
Stromberg:
NA-D6, Test to Improve Fuel Consumption Characteristics on the 300 H. P . Hispano-Suiza
Engine------------ ---------------------~ ------------------------------------ ----- 309
N A-L5, Development___ _____________________________________________________________ 442
NA-L5, Double Venturi Inverted T ype_________________________________________________ 314
NA-L5, Test of, on the Liberty 12 Engine____________________________________ ____ ______ 158
Test of Back Suction and Air Bleed Type Mixture Controls in Flight_ ____________________ _____ _ 368
Test Chamber and Method of Making Computations____ _____________________________________ 405
Zenith:
Test of Canton Electrical Vaporizing Device________________________ _____ ______ _________ 125
US-52, Instructions for Installing 85-A Mixture Control__________________________________ 175
US-52, Test of, with "Plain Tube" and Britton Type Discharge Nozzles___________________ 370
Castings:
Heat Treatment of Sand Cast Duralumin_ __ _ ___ _ _ __ _ _ _ __ ___ ___ ____ __ ___ _ __ 408
Metallography of Sand Cast Aluminum Alloys_______________________________________________ 449
Method of Making Aluminum Bronze Castings __________ _____ __ ____________________ ------___ 376
Methods of Making Manganese Bronze Castings to meet Air Service Specifications No. 1102L___ 275
Casualty Statistics and Causes, by Lieut. Col. L. H. Bauer and Maj. William Mac Lake________ ______ 4
Casualty Statistics and Causes, First Transcontinental Reliability and Endurance Test____________ ___ 2
Chamber, Carburetor Test Chamber and Method of Making Computations_________________________ 405
Chamber Test, Standard Al~itude Chamber Test for Engineers _________________ -----______________ 106
Characteristics, Limitations, and Employment of the Air Service__ ___ ______________________________ 72
Chassis. See "Airplanes" for Each Particular T ype. ·
Chief of Air Service, A. E. F., Final Report to-the Commander in Chief, A. E. F____________________ 180
Chrome-Molybdenum, Physical Properties of Chrome-Molybdenum Steel Tubing_____________ __ _____ 445
Circular Volume III, No. 273, Changes in Information Circular, Supplement_________________ _______ 273
Circulars, Announcement of Air Service Information Circulars (Aviation) with Authority_____________ 1
Climate, Effect on Standard Airplane Wing Coverings___ _______________ ________ __________________ 384
COA-1. See "Airplane."
Column, Comparison of Column Formulas_______ _______________ ____ ___ __ __ ___________ ___ _______ 395
Columns, Tests on Combined Loading of Wooden Struts____ _____ ________________________________ 276
___.-Column Charts, omographic Column Charts ___ __ _____________ __ ____________________________ _ 304, 446
Combined Loading, The Investigation of Structural Members under Combined Axial and Transverse
Loads------ ---------------------------- ~ ---------------------------------- --------------- 493
'-- ------·
..
9
Communications Officers: 6?!g:tl':%°:
Notes, Provisional_ _____________________________________________________________________ -- 78
Code Instruction_ ________________________________________________________________________ 79
Vacuum Tubes _______ _____ _________ _____ _______ _____ ____________________________________ 80
Compression, Effect of Reduced Engine Compression Pressure on Pre-Ignition with Mica Plugs________ 20
Computation, Power Plant Laboratory Standard Test :Methods ___ __ _____________________ ____ __ -- - 589
Connections, Test of Various Types of Gasoline Hose Connections___________ ____ ______ __ __ ________ 13
Consolidated Aircraft Co. See "Airplane." .
Control Cable Guide Test_ ____ __________________ · __ ________ ____ ____________ ____ ______________ 95, 110
Control Surface, Wind Tunnel Test of Heavy Bomber---------------------------------------- ~ --- 531
Controllability, Angular Velocity and Dynamic Stability of an Airplane about the Axis of Pitch________ 418
Controls:
Aileron Effectiveness ___________________________________________________________________ - - 454
Mixture. See "Mixture Controls."
Static Test of Martin Bomber Elevator Controls_____________________________________________ 424
Cooling System:
DH-4, Test of Auxiliary Radiator---- -- ---- ----------- ---------------------- ---------- ----- 241
DH-4B, Test with Hispano-Suiza 300 H.P. Engine__________________________________________ 156
DH- 4C, Test------------------------------------------ ---------------- ------------ ------ 271
Fokker D-VII, Test___________________ _________________________________ ______________ ____ 233
JN-6, Test of Packard lA-744 Engine with Side Radiators_____ _________ _________________ _____ 294
LePere, Test of, Equipped with Side Radiators_______________________________________________ 299
Loening M-8, Test _________________________________________ __ _________ _______ _________ ___ 206
Martin Bomber MB-2, Test_ ____________ ______________ _____ ___ ___ _____ ___ ------------_ ____ 264
Ordnance Model D, Test_______________ __ _______ _____________ ____ _________________________ 144
Revisions in Cooling Systems for Air Cooled Cylinders________________________________________ 124
Thomas Morse MB-3, Test___ ______ ______ ____________ _____ ____________ ___________ _________ 133
TW-1, Flight Test_______________________ _________________________________ ____ ______ _____ 410
VCR-1 Airplane, Test of, with Annular Radiator_ ___ ____________ ----------------------------- 245
:X:B-1-A, Test------------- ------------- -- -- ------------ -------------------- ------------- 128
Copper, Physical and Metallographic Properties of Copper-Zinc-Aluminum Alloys Containing Small
Amounts of Magnesium_____ ___________________________________________________________ _____ 393
Copper-Silicon-Aluminum Alloys with and without Manganese __ _ ------ - ---------------- ___ ------- 385
Cords, General Descriptive Matter on Airplane Fabrics, Tapes, and Cords _____________ :_ ____________ · 45
Corps Air Service-Field Manual (Provisional) __________________________________________________ - 74
Corps Observation. See "Airplane."
Corps Observation, Tactical History, Air Service, A. E. F _____ ___ _______________ : _________________ 75
Corrosion:
Interior Corrosion of Steel Struts, and Its Prevention_____ _______ __ _____ ______________________ 374
Investigation of Methods for Preventing the Corrosion of Metal Parts________ _____ ________ _____ 211
Prevention of Metallic Aircraft Parts--------- --- --- ---- ------------- ~--------- ------------- 274
Z-D Process for Treatment of Light Alloys to Inhibit Corrosion________________________________ 448
Coventry 37-millimeter Mark III Airplane Cannon, Ground Test__________________________________ 226
Covering Wing Gasoline Tanks in Martin Bomber_ ________________________________ --- ------ ----- 105
Coverings:
Comparison of Protective Airplane Wing Coverings_ ________________ _____ ____________________ 250
Effect of Climate on Standard Airplane Wing Coverings__ __ ___________________________________ 384
Instructions for the Application of Dope and Pigmented Protective Coverings___________________ 44
Life of Wing Coverings Using Clear Dope_______ _________________ ____ __________ _____________ 103
Cox-Heinkel. See "Airplane."
Cox-Klemin. See "Airplane."
Cracking of Alloy Steels During Dip Brazing_ ________ ____________________ ___ _________________ ___ 295
Crashes in the U. S. Army Air Service During the Calendar Years 1918-1921, inclusive, and Results of
Physical Examinations for Flying During the Calendar Years 1920 and 192L_________ _____________ 340
Critical Loading of Structural Members Subjected to Combined Axial and Transverse Loads_ ______ ___ 581
Crystal-On, Test of Sample of Crystal-On and Report on onfog Giving Treatment of Glass__________ 182
Curtiss. See "Airplane."
Curtiss. See "Engine."
Cut-Out, Delco Automatic Generator Cut-Out_______ ___________ _____ _________________________ ___ 151
Cylinder:
ABC " Dragonfly" Cylinder, Test_ ___ _ -------- ______ ______________________________ ____ ---- - 265
Effects on Cylinder Performance of Variation of Position and Number of Spark Plugs___ _________ 401
Flow of Air Around a Rotating Cylinder ___ _______ ________ ______________________________ - - - - 510
10
. • Information
Cyl!nder- Contmued. Circular No.
Instructions for Reinforcing Liberty Cylinders_______________________________________________ 504
Lawrance-IO-hour Endurance Test of All-Aluminum Cylinder____ ___ _______________________ ____ 192
Liberty, Test of Standard Liberty Cylinder Mounted on a Universal Engine Crankcase___________ 199
Smith, Performance of the 5.5-inch by 6.5-inch Smith Cylinder Unit____________________________ 218
Test of Revisions in Cooling Systems for Air-Cooled Cylinders_________________________________ 124
Construction, Adaptability of Hyde Welding Process to Steel Engine Cylinder Construction_______ 364
D-VII. See "Airplane."
D-12. See "Engine."
DB-1. See "Airplane."
DH. See "Airplane."
D
Davis, Test of Davis 3-inch Nonrecoil Cannon Mounted in Martin Bomber___ _____________ __________ 342
Dayton-Wright. See "Airfoil."
Dayton-Wright. See "Airplane."
De Bothezat, Barograph, Type "A"-------------- - --------------------------------------------- 439
Decorations, Tentative List Awarded Army Air Service, A. E . F___ _______ _________________________ 6
Delco:
Automatic Generator Cut-out, 50-hour Endurance Flight Test_________________________________ 282
Comparative Merits of Dixie Magnetos and Delco Battery Ignition System_ _____________ _______ 17
Report on Foster Modification in Liberty Deleo Switch Assembly_________ _____________________ 66
Design: .
Airpla.ne Performance and Design Charts ____ ___________ ~ ____________ . _ _ 183
Characteristics for Most Suitable Pursuit Airplane_ __________________________________________ 436
Design of Cabane Struts for the PW-1 with R. A. F . 15 Tapered Wings________________________ 172
Design of Standard Lugs __________ _____ __________________________________________ ~________ 152
Design and Stress Analysis for PW-2 Night Pursuit Type_____________________________________ 150
Destructive Whirling Test of Aero Marine Propeller___________ __ ______________________ ______ _____ 137
Destructive Whirling Test of "Micarta" Propeller (Westinghouse) and Rubber-Covered Propellers with
Hard and Soft Rubber Leading Edges (Brunswick-Balke-Collender Co.)__________________________ 8
Detonation, Elimination of, by the Addition of Xylidine, Ortho-Toluidine, Benzol, and General Motors
Anti-Knock No. L ________ ___ _________________________ ____ _________ ____ ____ __ ._ _ _ __ _ 319
Development, Aircraft Development Since the Armistice __________________________ _____ ____ ------- 402
Direction Finder, Semiportable Radio, Type SCR- 142--------------------------------------- - ---- 238
Dixie Magneto. See "Magneto."
Dope:
Dopes and their Application________________ __ _____________________________________________ 544
General Descriptive Matter on Dopes, and Instructions for the Application of Dope and Pigmented
Protective Coverings __ _____________________________ ___________________________ ___ ___ ___ 44
Life of Wing Coverings Using Clear Dope____________________ _________________________ ____ __ 103
Wing Coverings, Protective:..___________________________ __ _________________ _____ __________ _ 250
Doped Fuels, Effect of Doped Fuels on the Fuel System ________________________________________ 308, 383
Douglas. See "Airplane."
Drag, Airplane Performance from the Standpoint of Modern Conception of Drag___ __ _________ ______ 560
Dural, Study of Dural and Steel for Airplane Structure·-------------------------- ------ ---------- -- 568
Duralumin:
Column, Crushing, and Torsional Strength of Duralumin Tubing________________ ____ ____ ____ ___ 470
Economical Use of Duralumin as a. Substitute for Steel in Compression_________________________ 337
Heat Treatment of Sand Cast Duralumin.----------------------------------- - ---------- ---- 408
Dura.lumin Channels, Compression Strength. ____ __ -·-_____ __________________ _____________________ 598
Duralumin Spar, Test of Aeromarine Duralumin Spar _______________ ----------------------------- 524
Dynamic Stability, About the Axis of Pitch---- ------------------------- --- ---- ---------------- 418
E
Efficiency, Variation in Volumetric Efficiency with Valve Lift______________________________________ 356
Elevator Hinge Moments, Wind Tunnel Test for Eleva.tor Hinge Moment Coefficients on the Horizontal
Tail Surface No. 5 with Ba.lanced Eleva.tor---------------------------- - -------------- - -------- 567
Elias. See "Airplane."
Emergency Landings from Low Altitudes ___ _______________ ____ __________ _______________________ 366
Enamels for Aircraft_______ ____________________________________ _______________________________ 562
Endurance, Notes on Flight Endurance__________ ______________ ________ _________________________ 210
Endurance Test of Liberty Engine----------------------------------------------- - -- --------- -- 523
. 11
Information
Circular No.
Enemy Aircraft Destroyed by United States Army Air Service__ _____ __ _______ _______ ____ __________ 7
Engine Cleaning Fluids, Inflammation Tests________________________________________________ ____ __ 588
Rngines:
ABC--
Dragonfly, Cylinder Test oL---------------------------------------------------------- 265
Dragonfly, Standard Engine Report__ _______________________________________ ___________ 252
Wasp, Standard Engine Report___ _______________________________________________ ______ 167
Aeromarine, U-8-D., Standard Engine Report_ ____ __ ------ -___________ ____ __ ___ _____________ 325
Air Intakes, Outside and Inside, Effect on Engine Operation_______ ____________________________ 289
"Bellows" (Sylphon) Fuel Pumps for Liberty "12" and Wright Model "H" Engine______________ 369
Benz, 200 H.P. Standard Engine Report_ ___________________________________________ _______ 41
B. M. W., Calibration of 6-Cylinder 185 H . P., B. M. W. German Aviation Engine______________ 138
Bijur Ignition End Starter, Test of------------------ ------- ---- -- --- -- ------------ - ------- 357
G-6. See "Engine, Curtiss G-6."
G-12. See "Engine, Curtiss G-12."
Calculations, Standard Method__________ _________ ______ __ _____________ ___ _____ ____________ 421
Curtiss-
G-6, 50-hour Endurance Test _____ ----- - ________________________________________ -----_ 272
G-6, Standard Engine Report ________________ ._ __ ______ _____ ___ _______________________ 329
G-12 (Geared) , Standard Engine Report _______________ _____________________ _____ ___ ·____ 330
D-12, Development and Test of Stromberg NA-Y5D Carburetor for_______________________ 572
D-12, Standard Engine Test, of High and Low Compression Engines_ ___________ __________ 550
O:X:- 5, Test------------ ---------------------------------------------- --- ---- -------- 373
Curves for Estimating Fuel Consumption on the Basis of Piston Displacement and Revolutions
per Minute------ ---- --- ---- -- - --------------------------------------- -- ------------ --- 375
Dragonfly. See "Engines, ABC Dragonfly."
E--6. See "Engines, Rausie."
Effect of Reduced Engine Compression Pressure on Pre-Ignit ion with Micarta Plugs______________ 20
Fuel Pumps. See " Pumps."
Gasoline Hose Connections _________ ___ - - - - _ - ___ - _ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -- - -- - _ 13
Geared, Performance and Design of Five-geared Engines___ _________ _______ _________ ___ _______ 143
Hall-Scott L-6, 50-hour Endurance Run__ ____________________________ ______________________ 149
Hall-Scott L-6, Standard Engine Report______________ __ ________ __________________ __________ 127
Hispano-Suiza-
See "Engine, Wright."
E, Variation in Performance with Degree of Throttle Opening_____ ________________________ 354
E and I , Ignition Timing Instructions and Chart___ __________ _____ _______________ ________ 5
H, 300 H.P.; 50-hour Endurance Test, with Cracked Crankcase___________________________ 279
K (Cannon Model), Test oL---- ---- - ---- ----------------------- --- - ------------- ----- 159
Performance Test of Hispano-Suiza with Airplanes. See "Airplanes."
Report of Cannon Test on Hispano-Suiza Engine_________ __________________________ ___ __ 32
Starting Torque on Liberty, Hispano-Suiza, and other Aviation Engines______ _____ _________ 126
300 H.P. and Liberty 12, Induction System Pressure__ ________________ ____ ___ ___ _________ 223
300 H.P., 50-hour Endurance Test at High Speeds ------------------ -- -------- - --------- 170
300 H.P., Vibration Characteristics_________________ __ _______ ___ ___ ____________________ 28
Torque Stand and Flight Test of Compression Relief Device_______________________________ 131
With Steel Cylinders _____________________________________________ _____ - - - - - - - - - - - - ~ - - 64
Ignition. Su "Ignition."
Isotta-Fraschini V-6, Test_________ ________________ ____ ___________________________________ 177
L-6. Su "Engine, Hall-Scott."
Lawrance, Standard 50-Hour Endurance Test ____ ------- - -- ____ - -- ------------ __ ------------ 1"22
Lawrance, 10-Hour Endurance Test, Lawrance All-Aluminum Cylinder_ ___ ________ _____________ 192
Liberty-
Comparative Flight Performance of, equipped with 5.42 and 6.5 Compression Ratios_________ 293
Comparative Test of Auxiliary Starting Devices_________________________________________ 111
Determination of Carburetor Setting for the Liberty Engine, for Dirigible Use_______________ 311
50-hour Endurance Flight Test of Buzzer Starter_________________________________________ 302
Flight Test of Packard Fuelizer_ _ _ _ ___ _ _ _ _ _ _ _ _ _ _ _ _ __ _ __ _ _ _ _ _ _ _ _ _ ___ _ _ _ _ _ _ _ _ _ __ _ _ 134
Foster Modification on Liberty Delco Switch Assembly____ __ ____ __ _______________________ 66
Free Throttle Endurance Test of Liberty Engine_________________________________________ 523
Fuel Consumption Test of DH-4B with Liberty Engine___________________________________ 346
Ignition System Instruction Board_. - ______ __ - -- • - -- - - - - - -- - -- _ - - - - - - - - - - - - - • - - - - - - • - - - 48
12 -
Engines-Continued. information
Liberty--Continued. Circular No.
Instructions for Reinforcing Liberty Cylinders ____ - - _ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 504
Minimum Fuel Head to Operate Liberty 12 Engine on Propeller Load______________________ 422
Single Cylinder, Test of Monel Metal Valves ________ - -- -- - - - - -- - - --- - - --- - --- - - -- - - -- - - - 9
Standard Cylinder Mounted on a Universal Engine Crankcase, Test of_____________________ 199
Starting Torque ______________________________________ - __ - - - --- - -- -- - -- - - -- - - --- -- -- - 126
12 and 300 H . P. Hispano-Suiza, Induction System Pressure_____________________ __________ 223
12 and Wright-Hispano 300 H.P., Operating on Automobile Gasoline______ ______ __________ 227
12, Bijur Starter _______________ _________________________ -- -- -- - - -- -- - - - - -- - - - - - -- - - - - 22
12, Buzzer Starter, 50-hour Endurance Flight Test_____ _____ _______________________ ___ ___ 302
12, Comparative Mathematical Analysis of the Stresses in Cam-shaft Drive Gears of Liberty
"12" and Packard "2025" Engines_- ------------ -- - ------- ----- ----- - --------------- 423
12, Comparative Merits of Dixie Magneto and Delco Ignition Systems______________________ 17
12, DeYelopment and Test of Zenith ED- 52 Carburetor for_ _________ - - - - - - - - - - - - - - - - - - - - - - 570
12, Performance, with a Compression Ratio of 6.5 to}____________________________________ 261
12, Preliminary Test of Bijur Ignition and Starting Motor________________________________ 22
Lion. See "Engine, Napier Lion."
Materials, a Metallurgical Report on Materials Used in Foreign Aeronautical Engines____________ 222
Napier-Lion, Standard Engine Report __________________________ - - - - - - - - - -- - - -- - - - - - - - - --- -- 157
OX-5. See "Engine, Curtiss OX-5."
Packard-lA-
744, Standard 50-hour Endurance Test______________ __________ ________________ ______ 135
l A-1116, Performance with 6.5 to 1 Compression Ratio_ ______________ ____________________ 284
lA-1116, Standard 50-hour Endurance Test_ ____ ________ ______________ _____ _____________ 130
lA-2025, Test- ----------------------------------- - -------- -------------- --- --------- 269
"2025," Comparative Mathematical f.-nalysis of the Stresses in Cam-shaft Drive Gears of the
Liberty "12" and Packard " 2025 "__ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 423
Parts and Accessories, I nstructions for Storage___________________ __ __ _______ _________________ 256
Power and Fuel Consumption, Method of Estimating ______ __________________ ____ _ -~_________ 317
Power Required to Drive Aeronautic Engine Magnetos and Generators______________ ___________ 42
R-1, Comparison of Piston Side Thrust in the Modified R-1, Radial Engine and the Single Cylinder
Test Engine------------------------- --- ------- ---- -------------------- -- -------------- 525
Rausie E-6, 50-hour Endurance Test _____________ __________________________________________ 324
Rausie E-6, Standard Engine Report_________ _________ _______________ ___ ___________________ 191
Standard Altitude Chamber Test___________ ________________ _____ _________ __________________ 106
Starting Torque------------------------ ------- ----- --- ----------------------- ----- ------- 126
Storage, Comparison Tests of Storage Preparations_____ _____ ___ ____ __________________________ 451
Stress Analysis, Stresses Occurring in the Cam-shaft Drive Gears of the Liberty" 12" and the Packard
"2025" Engines.____ __________ ______ ___ _______________ ____ __ ________________ __________ 423
Transcontinental Reliability and Endurance Test _____ __ ________________________ ______ _______ 2
U-8-D, Standard Engine Report_______ _____ ________________________ ___ ____ ________________ 325
Universal Test Engine____________________________________________________________________ 47
V-6. See "Engine, I sotta-Fraschini."
Variation in Volumetric Efficiency of an Engine with Valve Lift.____ _________________ __ _______ 356
W-1:
Carburetion, Heat Rejection, and Weight Data_________________ ______ ________ _____ ____ __ 361
·50-hour Endurance Run____ ___ ___ _____ _______________________________________ __ __ __ __ 326
Stress Analysis_________ _______________ __ _______________ __ ________ __ _______ ___________ 447
Walker Radial, Standard Report___ _______________________ _____ __ __ ____ __________________ __ 251
Wasp ABC, Standard Engine Report_ _________________ _____ ________ ____ ________ __ _____ ____ _ 167
Wright:
See "Engine, Hispano-Suiza."
H-2, Performance Report_ ______________ _____________________ ______________ ______ _____ 344
Wright-Hispano, Operating on Automobile Gasoline__ ___________ ____ ___ __________________ 227
Engine Heater, Test of Airplane Engine Heater__ ________________________________________________ 232
Engine Horsepower, Method for Computing Horsepower Available from Engine with Two-bladed Wood
Propeller·--------------------------------------------------------------------------------- 505
Engine H orsepower, Variation with Altitude_______ ____ ____________________ __ ______________ ______ 92
Engineering Division, Air Service, Index to Technical Reports of, Nos. 1-1300, January, 1918-June, 1920__ 93
England, Report of General Mitchell's Inspection Trip___ ____________________ _________ ____ ________ 391
Exhaust Equipment Temperature Determinations ___________ _______ __ ___ ________ _______ .________ 594
~xhausti Wind Tunnel T~st of the Eff~ct of ~ake Angle on Suction iI\ Exhaust Stubs ___ ,.,_.,_- - , --:. ,, -.,,- 17~
13
Information
F Circular No.
Fabric, General Descriptive Matter on Dopes__ ___________ ________________________ ____ _________ _ 44
Fabric, General Descriptive Matter on Fa bric, Tapes, a nd Cords_ _____________________________ _____ 45
Fatigue and Vibration of Metals ____ __ __ _______________________________________________________ 255
Films, Catalog___ ______ ____ ___ ___ ___ _____ _________ _______________________________ __ ________ 119, 469
Finder, Direction, Type SCR- 142___ __ ___ _ _ _ __ _ _ _ _ __ _ _ _ ___ _ _ _ _ _ _ ____ _ _ __ __ __ ___ _ ___ _ ____ _ _ __ 238
Fire Ha zard Tests of I gnit ion Equipment _______________________________________________________ 596
Fire Prevent ion, Aircraft ____ ______ ________ ·_ ________ __ ___ __________________________________ __ __ 592
Fitt ings------ - -- -- - -- -------- - --- - ----- - ----------------------------------------------- - ---- 387
Flare, Modified Mark!-- - -- - --- ------------------------ - ------------------------ - -- - --- - ----- 392
Flood Light:
A-1, Handbook 0f Instructions for____________ _____ __ ______ __ ______ _____ __ __ ______ _________ __ 583
Comparative Test-- ----- -- ------------- ------- - ----- - - - -------------- ---- ---------------- 571
Fog, Test of Sample of Cryst al-On _________________________________________________________ ____ 182
Fokker. See "Airpla ne."
Forced Landings. See " Emergency Landings."
Foreign Aerona utical Engines, A Metallurgical Report_________ ________ __ _______________ _____ ____ _ 222
Form, Official Air.pl ane Report F orm_ __ _____ ___ __ ___ ______________ ______________ ___ ___ ____ ___ __ 97
Formation Fl ying ___________ ___ _____ __ ___ _____ ____ ____ ________ ________________ _______________ 73
Formula, Comparison of Column Formulas___________ __ ______ _________ __________ __________ ______ 395
Formulas, Precise for Restra ined Beam with Axial Load of Compression, Equal End Moments, and Two
Symmetrically Placed Side Load -- -- --- ------- -- - - --- - ---- --- - ---------- --- --- --------- - ----- 591
Foster, Foster Modificatio11 on Liberty-Delco Switch Assembly __ ___________ ______ ___ ______________ 66
France, Report of General Mitchell's Inspection Trip___________________________ ___ ____ ____ ___ ____ 391
Freezing Points, Ta bles Showing the Freezing Points and Specific Gravity of Alcohol-Water Mixtures __ 178
Fuel:
Clogging of Fuel Strainers______________ _____ ____ _____ _____________ _______________________ _ 542
Investiga tion of the Effect of Doped Fuel on Fuel Syst em___ ______ ______________ ____ ____ ____ 308, 383
Test to Determine Minimum Fuel Head to Operat e Liberty " 12" E ngine on Propeller Load______ _ 422
Fuel Consumption :
Characteristics of the Stromberg T ype NA- D6 Carburetor on 300 H.P. Hispano-Suiza Engine___ _ 309
Curves for Estimating Fuel Consumpt ion on the Basis of Piston Displa cement and Revolutions per
Minute---- - -------- - ----- - ------ - ----------- - ------------------ --- - - -------- - -- -- - -- - 375
DH-4B with Liberty 12- A and Form " D " Supercharger ____ _______ _____ __ __ _______ __ ___ _____ 398
Effect of Fuel Head at Ca rb uretor on Brake Horse Power and Brake Specific Fuel Consumption____ 336
Method of Estimating Power and F uel Consumption at Various Alt it udes ____ _______ ____ ___ ___ 317
Test of the DH- 4 ___ _____ __ ___ __ ______ __ ___ ______ _____ _______ __ __ __ __________ _______ ___ 346, 461
F yelizer, Test of Packard Fuelizer in Liberty " 12 " --------- -- ------ -- - ---- - --- -- - - ------- - ----- - - 134
Fuselage:
DH-4-- -------- ---- -- - -- - --- -- - -- - - ------- - --- -- --- - ---- - - - - ---- -------- --- - - --------- - 34
NBS-3, G. Elias, Torsional Test_- - - -- - --- - ----- - ------- - - -- -- - -- ~- --- - ----- - - -- - - ---- - ---- 517
NBS-4 Curtiss, Torsional Test _______ _____ ________ ___________ __ _____ _________ _____________ 513
XB-1-A, Static Test ______ _____ ____ ____ _______ -- - ---- -- --- __ ______ - - ----- - -- _____ - ------- 338
Wind Tunnel Test of Eight Models____________ _________________ _________________ __________ 477
GA- 2A. See "Airplane."
GAX. See "Airplane."
G. Elias. See "Airplane."
Gallaudet. See "Airplane."
Gasoline:
G
Alcohol, Gasoline Mixtures ____ ______ ___ ___ ___ ___ _________ _____ ____ ___ _______ ___ ___ ---- -- - - 450
Analysis of Some United States Gasolines _______ ________ ____ ___ ____ __ ______ __ _______ _ - - - - - - - 465
Comparative Test of Homogenous Gasoline and Commercial Aeronautic Gasoline_ __ _________ ____ 35
Determination of Water in Gasoline __ __ ___________________ _________________________ - _ - -- - - 320
Liberty " 12" and Wright-Hispano 300 H. P. Operation on Automobile Gasoline _________ ___ -- --- 227
Low Test Gasoline Specifications __________ ____ __ __ __ ____ . _____ ____________ _______ __ ___ ----- 165
Specificat ions and Methods of Testing__ ____ _________ _______________ _________ ____ _____ ____ __ 46
Test of Hose Connections ___________ ________ ___ ____ ____ __ ___ _____ ____ _____ __ _____ _ - --- - - - - 13
Use of Commercial Low-Test Automobile Gasoline in Aviation Engines__________ ____ __ _______ __ 216
Gear Fuel Pumps, Engine Driven, Type " C "------------------- - ----- - --- - -- - --------- - --- -- --- 464
Geared Aviation Engines, Performance and Design __ _________________ ____ ____ __________ ___ ____ - - - 143
Gears, Comparative Mathematical Analysis of Cam-shaft Drive Gears of the Liberty " 12" and the
Packard "2025 " -- ------ - -- - ----- - --------------- - --- -- -- - ------ - ------ - --- - --- - - -- - -- - -- -- 423
14
Information
Circular No.
Generator, Airfan Type FA-9 ________________ - _ - --- - - --- - - - - - - - -- - - -- - - - - - - - --- - - - -- --- -- - - - - -
Generator Cut-out, Delco Automatic 50-hour Endurance Test_ __ __ _ -- -------- - - ---- ---- -- -- _ -- - -- -
Generator Cut-out, Delco Automatic Generator Cut-out _________________________________________ _
Generators, Power Required to Drive Magnetos and Generators __________________________________ _
Generators, Radio Generator Airfan Head Resistance Measurement_ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Germany, Report of General Mitchell's Inspection Trip ___________ ____ ___________________________ _
Gliders ____________________________ ----- _____ - -- ____ ----- _· ___ - - - - - __ - -- -- - ---- --- -- -- - -- --- -
Goggles, Test of Sample of Crystal-On ____________ - - - - - - __ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Goggles, Vacuum onfrosting __________ ---- _____ - - - --- - - - - -- -- - - - --- - -- - - -- ------ --- - -- - - - ----
Goodyear, Test of Thick-walled Leak Proof Tanks ______ - ______ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
62
282
151
42
.63
391
444
182
258
136
Gottingen. See "Airfoil."
Guide, Report of Control Cable Guide Running Test ___________________________________________ 95, 110
H
Hall-Scott. See "Engine."
Hangar, Performance of Tent Hangar Manufactured by Baker & Lockwood________________________ _ 187
Hangar, Performance of Test Hangar Manufactured by Missouri Tent & Awning Co-----·-·-·-·-·--- 188
Ha.rt. See "Propeller."
Hartmann & Braun, Laboratory Test on Electric Thermometer----------·-·- ·- -- ·-· -·-------- -·-·- 277
Head, Effect of Fuel Head at Carburetor on Brake Horsepower and Brake Specific Fuel Consumption._ 336
Heat Treating, Ba.th Composed of Sodium Chloride, Sodium Carbonate, and Sodium Cyanide _________ - 363
Heat Treatment of Sand Cast Duralumin_____ ______ ____________ ____________________ _______ _____ 408
Heater, Test of Engine Heater _______________________ ------___________________________________ 232
Hercules, Standard Test of Hercules Spark Plug.------------------------------------------ ---- -- 116
Hispano-Suiza. See "Engine."
History, Tactical History of Corps Observation, Air Service, A. E. F ____________ .____________________ 75
Holland, Report of General Mitchell's Inspection Trip____________________________________________ 391
Horsepower:
S ee "Engine."
Method of Computing Horsepower Available from Engine with Two-bladed Wood Propeller_______ 505
Variations of Horsepower with Altitude____________________ _________________________________ 92
Hose Connections, Test_ ____ _________ _______ _______ _________ -_ - - - - - ___ _____ - - - - - - - - - - - - - - - - - - - 13
Huff-Da.la.nd. See "Airplane."
Hyde, Adaptability of Hyde Welding Process to Steel Engine Cylinder Construction ___ -------------- 364
I
Ignition:
Bijur, Preliminary Test of Bijur Ignition End Starting Motor for Liberty " 12"-------------- - --- 22
Bijur, Test of Bijur Ignition End Starter for Airplane Engines____________ ______ _______________ 357
Comparative Merits of Dixie Magneto and Delco Battery Ignition System______________________ 17
Delco Automatic Generator Cut-out___________________________________________________ _____ 151
Device, Test of Alsop All-Spark Ignition Device--------------------------------------------- 18
Equipment, Fire Hazard Tests oL----- -- -- ---- -- --- --- - - --- ----- - -- ------------------------ 596
Standard Test of Hercules Spark Plugs ____ - ----_------------- _________________________ ----_ 116
Test of Kellogg 600 Watt Reverse-Current Relay__________________________________ ____ ___ ___ .189
Index:
Air Service Orders and Circulars, January 1, 1919, to December 31, 1923. Superseded by Circular
5-1, 0. C. A. S., May 16, 1924_ _ _ _ __ _ _ _ _ __ _ _ _ 459
Technical Reports of Engineering Division, Air Service, Nos. 1- 1300 J anuary, 1918-J une, 1920____ 93
Indicators, Rate-of-Climb, Description, and Theory______________________________________________ 31
-· Inflammation Tests-Engine Cleaning Fluids___________________________________________________ __ 588
Inflection, Investigation of the Movements of the Points of Inflection on Beams under Various Com-binations
of Loads ________________ --------_____________________________ ___ _____________ 471
Information Circular, Volume III, No. 273, Changes in_ _____ ___________________________ ___ _______ 273
Injector, Flight Test of Anti-Knock Injector___________________________________________ ___ ___ ____ 372
Insignia., Comparative Merits of V a.rious Insignia_______________________ ____ _____ ___ ____ _________ 98
Inspection, Report of General Mitchell's Inspection Trip__________________________________________ 391
Instruments, Performance of Airspeed Tubes Exposed to Rain Drops and Freezing Rain______________ 549
Instruments, Testing of Airplane Tachometers___ ______________________________________________ __ 61
Intake, Air, Outside and Inside, Comparative Effect on Engine Operation_____________________ ______ 289
Intake Bell, Experiments on the Design of, for a. Wind TunneL---- -- - -- - - - ------- --- --------- -- -- 217
International Aerial Regulations__ ________________ __ _____________________________ ________________ 566
15
Information
Circular No.
Interphone, SCR-57, Remodele<l__ ____ _ __ __ _ _ _ 129, 204
Interphone, Spalding Voice Tube Interphone______________________________ __________________ ____ 108
Isotta-Fraschini. See "Engine."
Italy, Report of General Mitchell's Inspection TriP-------- -------------------------------- ------ 391
JL. See "Airplane, Junker."
JN-6H. See "Airplane."
J
Jet Calibration, Carburetor Metering ______ __ _______ ______ _____ ______ ______ _________ __ ________ _ Junker. See "Airplane."
K
Kellogg, Test of Kellogg 600-Watt Reverse Current Relay _______________________________________ _
Kerber-Boulton, Static Test of Experimental Spar _____________ _______________ ________ ____ ______ _
L
Laboratory, Medical, Report of the Medical Research Laboratory and School for Flight Surgeons for the
569
189
557
Calendar Year 1920---------- ----- ------- - - - --------------- - ----------- - --------- - - - ------- 231
Laboratory Standard Test Methods and Computation, Power Plant______________ __________________ 5 6
Laddon. See "Airplane."
Landing, Emergency Landings from Low Altitudes_________________ _______________ ______________ 366
Landing Facilities and Airways _______________ -------- ___________________ ________________ ~-____ 404
Landing Field Flood Light, Type A-1, Handbook of Instructions for_ ______ ________________________ 583
Landing Fields:
First Transcontinental Reliability and Endurance Test_ _________ ______________ ___ ____________ 2
Meteorology and Aeronautics___________________________________________ ____________ _______ 77
Rules _____ ---------- _________ _________ ___________________ _____________________________ _ 81, 84
Landing Lights, Carbic, Night_ ____________________ --------___________________________________ 253
Lantern Slides, Catalogue _____ -- -- --_----- _________ ------- ____________ ---------_----------- 119, 469
Lawrance. See "Engine."
Le Pere. See "Airplane."
Legal Questions Affecting Fede~al Control of the Air---------------------------------------------- 181
Liaison, Air Service Liaison Regulations ______________ ---- ______ ----- ___________________________ 89, 90
Liberty Engine. See "Engine."
Liberty Storage Battery Endurance Test------------------------------------------------------- 301
Lights, Carbic, Test of Night Landing Lights _______________________________ __ ___ ___ ___ ___ -----_ 253
Load, Structural Members under Combined Axial and Transverse Loads___________________________ 493
Load, Study of S. T. as Formula for Load Factors_________ ____ _______________ ___ ______ ____ ____ __ 498
Load Distribution among the Spars in Multi-Spar Construction of Airplane Wings___________________ 394
Load Factors, Effect of Variation in Load Factors on Structural Weight of Wings__ ________ ________ __ 318
Loading, Best Wing Loading for Single-Seater Pursuit Airplane _________ _
7
___________ ______________ 315
Loading, Critical Loading of Structural Members Subjected to Combined Axial and Transverse Loads__ 581
Loading, Test on Combined Loading of Wooden Struts _____________ -------_______________________ 276
Loads, Precise Formulas for Restrained Beam with Axial Load of Compression, Equal End Moments and
Two Symmetrically Placed Side Loads__________________________________________________ ______ 591
Loening. See "Airplane."
Lubricating Oils, Specifications and Methods of Testing________ ________ __________________________ 118
Lucas, Test of Lucas Electric Engine Starter--- ----- ------ ------------------------------------- - 168
Lugs, Design of Standard Lugs _____ -----______________________________________________________ 152
MB-2. See "Airplanes."
MB-3. See "Airplanes."
MB-6. See "Airplanes."
Machine Gun:
M
Marlin, Test of Model 1916, after Changes Were Made in Top Lock Container to Accommodate
Single Shot Mechanism_____ ________________________________ ________________ _________ ___ 59
Remedies for Machine Gun Malfunction____________________________________________________ 497
Test of Synchronizer Type C--8_ _ _ _ _ _ _ _ _ _ _ _ 396
Magazine, Aeronautical Book and Magazine List _____________ ---- - ------------- -- --------------- 21
Magneto, Dixie, Comparative Merits of Dixie Magneto and Delco Battery Ignition System___________ 17
Magneto, Power Required to Drive Magnetos and Generators___________________________________ __ 42
98093-28--3
16
Information
Mail, DH-4M2. See "Airplane. " Circular No.
Manganese Bronze Castings, Methods of Making __________ ______ __ ___ _______ ____ ___ _____ __ ------ 275
Manganese Bronze, Physical Properties _______________ ___ ___ _____ _________ ____ _____ ---- ------_ __ 371
Manual, Air Service Manual___________ _____ _________________ ____________ _____________ __ ____ ___ 84
Manual, Corps Air Service, Field ManuaL_______________________ ____ _________ ____________ ______ 74
Mapping, Use of Aerial Photographs in Topographic Mapping_____________________________________ 184
Marlin-Test of Model 1916 after Changes Were Made in Top Lock Container to Accommodate Single
Shot Mechanism--------------------------------- --- ---------- ----- ---------------- -- ------ 59
Martin. See "Airplane."
Measurement of Distances_______ __________________ ________ ________ ___________________________ 18
Medical:
Air Medical Service __ ----------- -- --- --- ------------------ -- -- -------- -- -- 3, 99, 237, 359, 403, 462
Air Medical Service and Flight Surgeon_____________________ ______ ________________________ __ 4
Extracts from Air Service I nformation Circular, Air Medical Ser vice______________ ____________ __ 563
Medical Research Laboratory and School for Flight Surgeons for the Calendar Year 1920, R eport____ __ 231
Messenger. See "Airplane. "
Metallic Aircraft Parts, Corrosion Prevention__ __ ____________ _____ __ ___ _______ __ ________ _________ 274
Metallography of Sand Cast Aluminum Alloys_ ___________________________________________ _______ 449
Metallurgical Report on Materials Used in Foreign Aeronautical Engines_________________________ __ 222
Metals, Fatigue and Vibration_______________________________ _________________ __________ _____ __ 255
Meteorology and Aeronautics__________________________________________________________________ 77
Meteorology, Transcontinental R eliability Contest ___ ________________________________ ______ ___ ___ 2
Method of Least Work Applied to Redundant Structures____________________________ _______ ______ 495
Methods of Observation with Fifth Corps First American Army on the Fronts___ __ _____ _____________ 115
Mica Plugs. See "Spark Plugs."
Micarta, Destructive Whirling Test of "Micarta" Propeller ___________________ ________ __ ----------
Micarta Liberty Propeller, Destructive Whirling Test______ ____ ________ __ ___ ______ ________________ 12
Miller Rubber Co., T est of Five Thick-Walled Leakproof Tanks __ _____ ____________________________ 114
Missouri Tent & Awning Co., Performance of Hangar (Tent)__________________ _____ _____ __ ____ ____ 188
Mitchell, Gen. W. L., Report of Inspection Trip to France, Italy, Germany, Holland, and England,
Made during the Winter of 1921- 1922 (Technical Supplement) ___ ________ ___ ____ - - ---- ------ ---- 391
Mixture Control : •
Instructions for Installing Mixture Control (85-A) in Zenith Car buretors___ ____________________ 175
Instructions to Pilots ____________________________ -------- ___________________ _ --- ---- --- __ _ 257
Test of Back Suction and Air-Bleed Type Mixture Controls in Flight________________ ___________ 368
Morane-Saulnier. See "Airplane."
Mone! Metal Valves, Test in Liberty Single-Cylinder Engine__________ __ ______________________ ____ 9
Mosler. See "Spark Plugs."
Motion Picture Catalogue ________________________________ __________________ ___ _____________ 119, 469
Mount, Ground Test of Cannon Turret Mount __ ---------------------- - ------------------- --- --- 112
Mount, Type " A," R eport of T est of Cannon Ring Mount___________ _____ __________ ______ ___ _____ 283
N A-D6. See "Stromberg."
A-L5. See "Stromberg. "
NBS-1. See "Airplane."
apier. See "Engine."
Navigation:
N
Air Service Manual _________________ ~---_________________________________________________ 84
First Transcontinental Reliability and Endurance Test___ ____ ________________________________ 2
I nstructions, Provisional_ __________________________________________________ ___________ ---- 82
Nelson Gun Control, Marlin, Test of Model 1916, after Changes were made in Top Lock Container to
Accommodate Single Shot Mechanism ________________________ .___________________ _______ ______ 59
Night Landing Lights, Carbic ____ -·- _ _ __ __ _ _ _ _ _ _ _ _ __ _ _ _ _ _ __ ____ ___ _ _ _ __ ____ _ __ ___ _ _ _ _ _ __ _ _ _ 253
N omographic Column Charts______ _____________ _____________ __________ ______ _______________ _ -304, 446
0
Observation:
Aerial Observation for All Arms _______________ ~ __________________________ ______ ___ __ ______ 85
Aerial Observation for Target Practice at Fort Monroe, Va., during the Season Ending August 26,
1920---------------------------------------------------------------------------------- 142
Methods Practiced with Fifth Corps First American Army on the Front ________________ ____ - _ _ 115
Observation, Selection, and Assignment_________________ _____ ____________ _______ ____ ________ 120
Tactical History of Corps Observation, Air Service, A. E. F__ ____ ___ _________ _________________ 75
17
Information
Circular No .
• Odier Portable Engine Starter, Test___________________________ ______ ______________________ _____ 190
Officers, Reserve Officers, April 15, 1920 ______________ ---- - -- _ _ __ __ _ _ __ __ _ _ _ __ _ _ _ _ __ _ _ 69
Oils, Specifications and Method for Testing Lubricating Oils______ __ _______________________________ 118
Operations, Notes on Recent Operations_________ _______ ________ ___________ ____ ____ __ ___________ 76
Operations Officers, Regulations for Corps AirService Operations Officers___________________________ 86
Ordnance "D." See" Airplane."
Ordnance "D," Cooling Test____________________________________________________ ________ __ ____ 144
Orenco. See "Airplane."
Ortho-Toluidine, Elimination of Detonation by the Addition of Xylidine, Ortho-Toluidine, Benzol, and
General Motors Anti-Knock No. l _ _ _ ___ ____ _ _ _ ____ __ _ _ _ ___ __ _ _ _ __ _ __ _ _ __ _ _ 319
Oxygen, Practical Field Service Use of Oxygen_________________________ __ ___________ _____________ 543
Oxygen Gas Apparatus, Description and Adjustment of Prouty Oxygen Gas Apparatus_ ______________ 174
P-lB. See "Airplane."
P-5. See" Airplane."
PA-1. See" Airplane."
PG. See "Airplane."
PT-1. See" Airplane."
PW. See "Airplane."
Packard. See "Engine."
p
Parachute, Test of Model 300-D-1 Parachute ___ ____________________ _____ ________ __ ____________ _
rerformance:
15
Airplane Performance and Design Chart____________________________ ___ __________ __ ___ ______ 183
Airplane Performance from the Standpoint of Modern Conception of Drag____ ________ ___ _____ __ 560
Effects on Cylinder Performance of Variation of Position and Number of Spark Plugs------------ 401
Empirical-Theoretical Method of Comparative Prediction of Airplane Performance________ __ ____ _ 68
Theoretical Method of Analyzing and Predicting Airplane Performance___________ __________ ____ 553
Photographs, Aerial, Use of, in Topographic Mapping____________________________________________ 184
Photography, Catalogue of Motion-Picture Films and Lantern Slides _____________________________ 119, 469
Photography, ManuaL _ _ __ _ _ __ _ _ _ _ _ _ _ _ _ __ _ _ _ _ · 96
Physical Examinations. See "Crashes."
Piston, Comparison of Piston Side Thrusts in the Modified R-1 400 H.P. Radial Engine and the Single-
Cylinder Test Engine---------------------------------------------------------------------- 525
Plating, Cadmium Plating by Means of Udylite Process------------------------------------------ 545
Plywood:
Design of Plywood Webs for Box Beams __________________________________________________ _
TrussRibs------------------------------------------------------------------------------
Use of Balsa Wood in Plywood_--"------------------------------ ~ ---- ~ ---------------------
Web Spars--------------------------------------- - --------------~-----------------------
Webs of Box Beams, Shear Strength oL ___ ___ __ ___ ___ ______________________ ____ ______ _____ _
Pomilio. See "Airplane."
Power, Method of Estimating Power and Fuel Consumption at Various Altitudes ___________________ _
Power Plant Laboratory Standard Test Methods and Computation ________ _____ __ ~ - ___ ____ __ - ___ - -
Power, Required to Drive Aeronautic Engine Magnetos and Generators __________________________ - -
Preignition, Effect of Reduced Engine Compression Pressure on Preignition with Mica Plugs _____ ____ _
Progress Report on the Study of Torsion on Wing Framework ________ __ ______ ___ __ _____ ________ _ Projector, Pyrotechnic Projector and Ammunition Test_ _______________ _____________________ - _ - _ - -
Propeller:
Aeromarine, Destructive Whirling Test_ _________________________ ______________________ --- __
Comparison of Flight Test of a Number of Wood Propellers with Wind Tunnel Tests on a Series <?f
Wood Propeller Models _____ ___________ ____ ___ ______ ________ ___ ___ ____ _________________ _
Design, Section Properties of a series of Aerofoils Suitable for_ ___ ___ ______ __ ___ - - - - - - - - - - - - - -
Destructive Whirling Test of "Micarta" Propeller (Westinghouse) and Rubber-Covered Propellers
with Hard and Soft Rubber Leading Edges (Brunswick-Balke-Callender Co.) ___ - - - - - -- - - -- - - -
Hart, 1920 Model, Manual and Parts List _________________________________________________ _
Hart, Whirling Test of Adjustable Propeller_ _____________________________ ----- - --- - -- ----- - -
Metal Tipping of Aircraft Propellers ___________________________________ - - - - - - - - - - - - - - - - - - - -
Method Used by the Engineering Division for Computing the Horsepower Available from an Engine
with a Two-Bladed Propeller _____ ------- _____________________________ - --- --- - - - ------~ - -
Micarta, Destructive Whirling Test ______________________________________ - - - - - - - - - - - - - - - - - -
hift of the Angle of No-Lift on Propeller Aerofoils _________________________________________ _
Test to Determine Minimum Fuel Head to Operate Liberty "12" Engine on Propeller Load_ - - - - -
X-14849, Investigation of Steel Propeller_ ___ ----- ___________________ ---------- - ------- - - ---
516
268
473
313
587
317
589
42
20
5 4
389
137
595
597
8
239
11
246
505
12
147
422
145
18
Information
C lrcular No.
Properties of Wood at 10 Per Cent Moisture________ __ __________ ____ __ __ ________________ ___ _____ 53
Prouty Oxygen Gas Apparatus ____ _________ ___ ____ __ ____ __ ______ ____ _____ ___ ____ ____ ______ ____ 174
Pump:
Bellows (Sylphon) Fuel Pump for Liberty "12" and Wright "H" Engines _________ __________ _ 369, 458
Engine Driven Gear Fuel Pumps, Type "C" ___ __ ____ ___ _ . _____ ___ ___ ____ _______ _________ -- - 464
Sylphon Fuel Pump- - - - - --- -- -- - -- - - - ------------------ -- - - -- - -- ---- -- - - - --- - --------- - -- 281
Pursuit:
Airplanes, Determination of the Best Wing Loading ______ ______ ____ ____ _____ ____ ____ __ ------- 315
Biplanes, Single Bay, the Economic Limit in Aspect Ratio_ ____ __________________ _____________ 260
Comparative Study of Type I Airplanes with Various Power Plants____ ________ ______ ____ ____ __ 307
Design Characteristics for Most Suitable Pursuit Airplanes_ ____ __ __ ____ __ ______ ____ ________ __ 436
Pilots, Notes for Pursuit Pilots ____ ___ ___ __ _______ ___ ___ ______ ______ __ ______ _________ ---- - - 87
Regulation , Pursuit and Combat Flying Training Regulati ons, Provisional_ ______ ________ ______ 83
Pyrotechnic, Projector, and Ammunition Test_ _____________ _____________________________________ 3 9
P yroxylin, Finishes for Aircraft _____ _____________________________________________________ ______ 561
R
Radial Engine, Comparison of Piston Side Thrusts in the Modified R- 1 400 IL P. Radial Engine and
the Single-Cylinder Test Engine__ __ __________________ _______ __________ __ ____________________ 525
Radio:
Airfan Type FA- 9--- -- ------ - - ---- -- - - ----------- - ------------ - ---------- - --------- - ---- 62
Auxiliary Control for Set Type SCR- 68_ _ _ _ _ _ _ _ ___ _ _ _ _ __ ______ _ _ _ _ _ ___ __ __ _ 94
Generator Airfan Head-Resistance Measurement _____________ ______ : ___ ____ _________________ 63
Notes for Communications Officers _______ ____ ____ _______________________________________ 78, 79, 80
SCR- 59, Remodeled______ ____ __ ___ __ ____ ______ __ ______ ___ _____ ___________________________ 323
SCR- 142, Direction Finder___ _____ ________ ___________ _______________ __ ____ __ ______________ 238
Short Wave Radio Telephone Set_ _________________ ___ ____________ ________ ___ ___ ___________ 30
Treatise for Radio Mechanics__ ___ __ ____ _________________ _________________________________ 229
Transcontinental Reliability Test____ ______ _______________________ _____ ____________________ 2
Radiator:
DH- 4, Tests of, to Determine Best Location for Speed _______________ ___ : ____ ____________ ____ 528
Fokker C0-4, Performance Test of, with Side Radiators ______ __ _________ _________________ ____ 456
Fokker C0-4, Test of_ _ _ _ _ _ _ _ _ _ _ _ 457
Side Type, Test of Curtiss JN- 6 with Packard lA- 744 Engine_________ ___ ______ _____ __________ 294
Side Type, Test of LePere_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ ____ __ _ 299
R. A. F. 19 Airfoil, Wind Tunnel Test_____________________________________ ________ ___ _____ __ __ _ 248
Rake Angle, Wind Tunnel Test of the Effect of Rake Angle on Sucti on in Exhaust Stubs____ ____ ____ _ 179
Rate-of-Climb Indicators, Description and Theory ________ __ ___ __ ____ ______ ____ _____ _____________ 31
Rausie. S ee " Engine."
Receiving Set, Type SCR- 59 Remodeled___ _____ __________ ______________________________________ 323
Redundant Structures, Application of the Method of Least Work __ __________ __ ____ ________________ 495
Regulations:
Corps Air Service Operations Officers.____ _______ ___________________________________________ 86
Flying Training Regulations (Provieional) _______ ______ ________________ .. _ _ 1
Pursuit and Combat Flying Training Regulations _______________ _____________________________ 83
Relay, Test of Kellogg 600-Watt Reverse Current Rela:v------------------------------------------ 189
Report:
Final Report of Chief of Air Service A. E. F. to the Commander in Chief A. E. F _____ ____________ 180
First Transcontinental Relia bility and Endurance Test_ __ ----- - -------------------- - --------- 2
General Mitchell 's Inspection Trip to France, Italy, Germany, Holland, and England ____________ 391
Official Airplane Report Form__ ___ ___ ___ ____ __ __ ___ __ __ ____ ____ ______ __ __ _________________ 97
Reserve Officers, List of, April 15, 1920- ---- - ------------- - ----- - -------------- -- - - ------------- 69
Ribs:
Design of Large Trussed Ribs_ ___ ___ _____ ____ ______ __ ____ ___ ___ ______ ___ _________________ _ 312
Experimental 15-inch Metal Spars and 11-foot Chord Metal Wing Ribs, Tests on _________ __ _____ 556
Experimental Reinforced Plywood Truss Ribs_____________________________________________ 212, 268
Strength of Wing Ribs .. ___ ___ ______ ______ ____ __ ________ ___________________________________ 443
Roland. . S ee " Airplane."
Rubber, Storage and Preserva tion of Rubber Goods, Tires, and Tubes__________________________ ____ 48
Rudders, Study of Balanced __________ ____ ____ __________________ _________ ____ __ __________ ~_____ 586
8--6.
SCR.
See "Airplanes."
See " Radio."
19
s
SE-5. S ee "Airplane."
Information
SL-6. S ee "Airplanes." Circular No.
Sediment Deposits in Carburetors_ __ ____ ________ ______ __ ___________ __ ______________ ___ ____ _____ 390
election, Observation, and Assignment_ _____ _____ ____ ______________ __________________ ___ _____ __ 120
Shear Strength of Plywood Webs of Box Beams____ __ __ ____ __ ____ ____ ___ ___ ______ ____ ____ ___ _____ 587
Shock Absorber Cord, Tests on Shock Absorber Corel_ ______ __ __ ___ ___ _____ __ ____ __ __ ___ ___ __ _____ 121
Shock Absorbing Wheels, J. V. Martin Static Test_ ________________________ ______________________ 254
Silicon, Copper-Silicon-Aluminum Alloys with and without Manganese_____________________________ _ 385
Ski, SE-5 Static T est __ __ ______ _______________________________________________________________ 322
Slides, Catalogue of Lantern Slides __________________ ____ __________ __ __ ___ ________________ ____ 119, 469
Smith Cylinder Unit, P erformance T est___________________________ ____ _________ ___ _____ _________ 218
Solder for Aluminum__ ___ ___ ________________ ___ ______________________________________________ 298
Solder, Investigation of Silver Solder _______________________________________ ___________ ____ ____ _ 26
Spad. S ee "Airplane."
par :
Design of Plywood Webs for Box Beams__ _ __ ____ __________ ________ ___ ______________________ 516
Effect of Eccentricities on Stresses in Airplane Spars__________________________________________ 438
Experimental 15-inch Metal Spars and 11-foot Chord Metal Wing Ribs, T ests on________________ 556
Experimental 1etaL _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 590
Load Distribution among the Spars in Multi-Spar Construction of Airplane Wings___ ___ ___ ____ __ 394
R einforced Ply-Wood Web Spars_______ ____ _________ ___ _____________ __ ____________________ 313
Static T est of Aeromarine Duralumin Spar____________ ________ _________ ___ _____ ___ ___ __ _____ 524
Static Test of Engineering Division Experimental Steel Spar______ ___ ______ ____________ ___ __ __ _ 519
Static T est of K erber-Boulton Experimental Spar__ __________ __ ________ __ _______ ____ _____ ____ 557
Spark Plug:
AC, Standard Test___ _____ ____ _____ __ _______________ ___ _______ ___________ ____ ___ ____ _____ 249
Brewster-Goldsmith Model 1-A, 100-hour Endurance Test____ _______ ____________ ________ _____ 209
Effects on Cylinder Performance of Variation of Position and Number of Spark Plugs____ ___ _____ 401
Effects of Reduced-Engine Compression Pressure on Pre-Ignition with Micarta Spark Plugs___ ____ 20
Method and Equipment for Cleaning and Testing_ __________ __________ ____ _____ _______ _______ 558
Mosler M-1, Standard T est (and Supplement)--------------- --- --- - ------ ---- --------------- 273
Standard Test of H ercules Spark Plugs ___ ______ ----- __ - - -- __________ ----_---- ------- ------_ 116
Speaking T ube--------------- - -- -- - --- ----------- ---- ---------------------- -- ------- ---- ----- 67
Specification, Method and Specification for Testing Lubricating OiL__ ____ __ ____ _ _ ____ ____ ____ __ ___ 118
Specification, Low Test Gasoline__ ___ __________ _____ ______________________ _____ ____ _______ _____ 165
Speed, Bamburg Speed Measuring Station_____ ___________________ _______ ______ __ __ __ ________ ____ 397
Spoke Lacing, Effect of Spoke Lacing on the Physical Properties of Airplane Wire Wheels________ _____ 537
Springer No. 3. See" Airfoil."
Spruce, Crushing Strength at Varying Angles of Grain _ ________ ___________________ - _ _ _ _ _ _ _ _ _ _ 259
S. T. Ae. Formula, Study of, for Load Factors------- -- ------------ -- ------ - - --------------- - ---- 498
Stability, Study of Controllability, Angular Velocit y, and Dynamic Stability of an Airplane about the
Axis of Pitch__ ______________ ___ ____ ____ __ _______ _____________________ ___ _______ ____ ____ ___ 418
Standard Altitude Chamber Test for Engines------------------ - --- ------------------------- - -- -- 106
Starter:
Auxiliary, Comparative Test ____ -- ------- __ _____ __ __ ____________________________ _ -- - - -- - - - 111
Bijur, Preliminary Test _____ ___ ____ _____ ____ _____ --- - --- -- ------- __ _____________ - -- -- - - - _ - 22
Bij ur, Test of Bijur Ignition End Starter __________________________________ ______ _____ -- - --- _ 357
Lucas, Test------- - ------- - ------------------------------------- - --- ------- --- - - --- ----- 168
Odier, Test-- - ----------------------- - --------- -- ------------ --- - ------- - ------- - -------- 190
Starting Device, 50-hour Endurance Flight T est (Buzzer Starter) __ __ ____ ____ ____ __ _________ - _ - _ - - _ 302
Starting Switches, T ests of Magnetically Operated Starting Switches _____ ____ _______ ___ ____ _____ -- _ 214
Static T esting, Present Procedure __ ___ __ ________________ _____ __ - -- -- ___________ -- - __ - __ • _ - - - - - 10
Steel:
Alloy, Cause of Cracking during Dip Brazing_____ ______________________________________ ___ __ 295
Ballistic Properties of a Urano-Silico-Nickel SteeL _____ _________ _____ ____ ____ ____________ -- - - - 186
Physical Properties of Chrome-Molybdenum Steel Tubing __________ ____ _________ __ - - ----- - - - - 445
Study of Dural and Steel for Airplane Structure_______ ____ _____ __________ ___ ____ __ ___ ______ _ 563
Steel Propeller, X-14849 ________ _________ ___________ _______________________________ -- - - - - - --- - 145
Steel Spar, Static Test of the Engineering Division Experimental Steel Spar___ ________________ ______ 519
Steel Struts, I nterior Corrosion and Its Prevention------- - ---------- - -- ---- ------ -- ---- --- ------- 374
20
In!ormatfon
Stee: Tubing: Circular No.
Ei;ect of the Ratio of Diameter to Gage Thickness upon the Torsional Strength_ _____ ___________ 263
Steei Tubing and Wing Beams Taken from the Fokker D-VII, Test on________________________ _ 104
T hin-Walled Seamless, Round and Streamline________________________________________________ 247
Storage:
Airplanes, Engines, Their Parts and Accessories _________________________ __ _____ __ __ __ - _ - _ - _ _ 2S6
Liberty Storage Battery Endurance Test ____ ___ __ ___ ______________ _________________ --- - --- - 301
Preparations for Aviation Engine Storage_ __________________________________ __ ______________ 4Sl
Storage and Preservation of Rubber Goods, Tires, and Tubes_ ______________ ___ ________________ 48
Strainer, Clogging of Fuel Strainers_______________________ _____________________________________ S42
Strength, Column, Crushing, and Torsional Strength of Duralumin Tubing__________________________ 4 70
Strength, Crushing Strength of Spruce at Varying Angles of Grain__________________________________ 2S9
Stress Analysis:
"Alouette" Airplane ______________________________________________________________ ------_ S20
Application of the Method of Least Work to Redundant Structures_ .. ____ ________ _______________ 49S
Charts for the Solution of Stresses in Airplane Wing Beams_________ _____ ___ _____________ ______ SSS
Deflection of Beams of Nonuniform Section________________ _____ _________ ____ _______ _________ 213
Design of Plywood Webs for Box Beams__________ _____ _____ _________ ______ ___ ______________ S16
Distribution of Load among the Spars in Multi-Spar Construction of Airplane Wings_____________ 394
Economic Limit in Aspect Ratio of Single-Bay Pursuit Biplanes___ __________ ____________ _____ _ 260
Effect of Routing on Modulus of Rupture and Other Strength Properties_ ___________________ ____ 240
JL-6 -------------------------------------------------- ------ --------- --- -------------- 332
Model W-1 Engine________________________________________ ____ ___ ___ ____ _________________ 447
Movements of the Points of Inflection on Beams under Various Combinations of Loads_________ __ 471
Structural Members under Combined Axial and Transverse Loads______________________________ 493
Wing Cellule of the Multi-Spar Type of Wing Construction with Special Reference to the Loading
Conditions of the Standard Static Test_____________________ ___ ______ _____________________ S2
Wings, Stress Analysis and Design of, for PW-2 Night Pursuit________________________________ lSO
Stresses, Effect of Eccentricities in Airplane Spars ____ ____________ - - - -- _ - - - - - - - --- - --- - - - - - - -- - - - 438
Stromberg Carburetor:
NA-D6, Test to Improve Fuel Consumption on the 300 H.P. Hispano-Suiza Engine_____________ 309
NA-LS, Development of Stromberg, Inverted Type Model____________________________________ 442
NA-LS, Instructions for Stromberg NA-LS Double Venturi Inverted Type--------------------- 314
NA-LS, Test of, on the Liberty "12" Engine------------------------------------------------ 1S8
NA-YSD, Development and Test of Stromberg, for Curtiss D- 12 Engine_______________________ S72
Structural Members Under Combined Axial and Transverse Loads___________ _________ ______ _______ 493
Structural Weight of Airplanes_________________________________________________________________ 39
Structures, Application of the Method of Least Work to Redundant Structures_____ _____ ____________ 495
Struts:
Comparison of Column Formulas _________________________________ __ _______ ______ .__________ 39S
K Bar, Physical Tests on Struts from JV-Martin Airplane_____________________________________ 101
Reserve Bending Strength of Struts--------------------------------------------------------- 3S3
Strength of Bent Struts ___ _______________________________ _____ ________________________ ~__ S80
Structural Design of Cabane Struts for the PW-1 with R. A. F. lS Tapered Wings______________ _ 172
Wooden, Test on Combined Loading________________________________________________________ 276
Supercharger, DH-4B, Fuel Consumption during Climb__________________ __ ______________________ 398
Supercharger, Test of Supercharger Air Coolers------------------------ - - ------- ----------- ------ 399
Supercharging, An Analysis of the Effect of Supercharging_________________________________________ 19S
Sweep Back, Effect of Sweep Back and Sweep Forward on an Airfoil_______________________________ 547
Switch, Liberty Delco, Report on Foster Modification__ _________________________________ __ _______ 66
Switches, Starting, Operating Tests___________ ________ _________ ___________ ______ ________________ 214
Sylphon Fuel Pump for Liberty "12" and Wright Model "H" Engines______ __ _____ ___________ _____ 281
Synchronizer C-8, Test of Machine Gun Synchronizer__________________________________________ __ 396
Synchronizer, Electrical Gun Synchronizer Test_ _________________________________________________ 194
T-2. See "Airplane."
TA. See "Airplane."
TW. See "Airplane."
T
Tachometer: .
Ai rp1a ne------------ - ------------------------------------------- ----- ------------------- Testing _________________________________________________________________ _______________ _
Tactical History of Corps Observation, Air Service, A. E. F---------------------------------------
Tactical Manual of AerialiBombardment _______________________________ - - - - - - - - - - - - -- - - - --- - -- -
60
61
75
140
21
Information
Circular No.
Tactics, Aerial, Observation, Bombardment, Pursuit-Combat ____________________ ~_ - _ - -- - - - - - - - - - 88
Tactics, Air ______________________________________________________ - _____ - __ - - - - - - - - - - - - -- - - - 73
Tail Plane, Method for Determining the Angular Setting_________________________________________ _ 102
Tail Skid, Impact Test of JN-4 Tail Skid and Landing Chassis____________________________________ 409
Tail Surface:
Static Test on DH-4 (Dayton-Wright)----------- - ----------------------------------------- 23
Wind Tunnel Test for Elevator Hinge Moment Coefficients on the Horizontal Tail Surface o. 5
\vith Balanced Elevator_____ ___ _____ _____________ ____ _______ __ __________ ___ ________ __ ___ 567
Wind Tunnel Test of Six Horizontal Tail Surface Designs having the USA-47 Airfoil Sections (and
Supplement)- ~-________________________________________________________________________ 511
Take-Off Characteristics DH-4 Airplane ____________________________________________ - --- ________ 480
Tanks:
Braender, Test of Experimental Leakproof Tanks- --- ------------------------ ------ ---------- 113
Covering Wing Gasoline Tanks in Martin Bombers___________________________________________ 105
Test of Crash Proof Tanks--------- ----- ---------- - ------------ -- ------------------------- 70
Test of Thick Walled Leakproof Tanks Supplied by the Goodyear Tire & Rubber Co_____________ 136
Test of Thick Walled Leakproof Tanks Supplied by Miller Rubber Co___________ _______________ 114
Tapes, General Descriptive Matter on Airplane Fabrics, Tapes, and Cords__________________________ 45
Technical Reports, Index to Technical Reports of Engineering Division_______ _______ ___ ___ _________ 93
Temperature Determination, Exhaust Equipment__ ___ ___________________________ ___ _____________ 594
Terminology, General Aeronautic Terminology__ _____________ __ ____ ______________________________ 21
Test Engine, Comparison of Piston Side Thrusts in the Modified R-1 400 H. P. Radial Engine and the
Single-Cylinder Test Engine_______________________________________________________________ 525
Test Methods and Computation, Power Plant Laboratory Standard___________ __ ___ ____ ____________ 589
Thermometer, Electric, Hartmann & Braun, Labqratory Test______________________ __ ______________ 277
Thermometer, Temperature Effect on Capillaries of Liquid and Vapor Pressure Thermometers_________ 339
Thomas Morse. See" Airplane."
Time Study of the Movements of the Firing Mechanism of the 37-mm. Automatic Baldwin Cannon ___ ._ 16
Tipping, Metal, of Aircraft Propellers'.__________ ______ ___ _____ __________________________________ 246
Tip-Vortices Shown by the McCook Field Wind TunneL_________________________________________ 262
Tires, Storage and Preservation of Rubber Goods, Tires, and Tubes _____ ____ ______ ____ ___ -·--______ 48
Tire and Wheel:
Discussion of Airplane Tires and Wheels (and Addendum) _____ __ ______ __________________ ___ __ 303
Report on Special Airplane Wheel and Tire (see Supplement)---- - - --------- ----- - -- -- ------ --- 154
Report on 36 by 8 Inch Straight-Side Tire and WheeL__ _________________________________ __ __ 207
Results of Static Tests on Standard Airplane Tires and Wheels_______________ _______ ______ ___ _ 220
Report on Special Airplane Wheel and Tire (2 by 4 Straight-side Tire, One-piece Rim)__ _____ ____ 278
Torque Stand and Flight Test of Compression Relief Device on 300 H.P. Hispano-Suiza_____________ 131
Torque, Starting Torque on Liberty, Hispano-Suiza, and other Aviation Engines____ _____ ______ ___ ___ 126
Torsion on Wing Framework, Progress Report on Study of_______________________ _____ ____________ 584
Torsional Strength of Steel Tubing_____ _____ ______ __ __ __________ _______________________________ 263
Torsional Test :
Curtiss NBS-4 Fuselage __ -------------------------------------------------- - --- - -- - ------ 513
G. Elias NBS-3 Fuselage ____________________ ---------- ___ --------------- --- -------------- 517
Martin Bomber NBS-1-----·-------- - ------------------------------------ ---- ----------- - 515
Training :
Aerial Bombardment Manual-
Part 1, Introduction and Preface_ ___ ___ ____________ _______________ _____________________ 54
Part 2, Rules and Regulations________ __ ___________ _________________________________ ___ 55
Part 3, Organization of Training Department and Ground T raining for Pilots and Bombers____ 56
Part 4, Flying Training for Pilots and Bombers__________________________________________ 57
Part 5, Operations (Service Squadrons) and Appendix________ ___ ________ _____ ____________ 58
Aerial Navigation Instructions, Provisional________ _________________ ___________ __________ ____ 82
Aerial Observation for All Arms ___________________________ ·________________ ______ __ _______ __ 85
Aerial Observation for Target Practice at Fort Monroe, Va__ __________________________ _____ ___ 142
Aerial Tactics, Observation, Bombardment, Pursuit-Combat_ ________________________________ 88
Air Service Liaison Regulations-
Part 1, General Liaison with Line and Other Units_ ____ _______________________ _____ ______ 89
Part 2, Liaison with InfantrY------- ----- ------------ -------- --- - ------ -- ---------- - -- - 90
Air Servic_e ManuaL__ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 84
Air T actics--------------------------------------------------------------- -- ------------- 73
Characteristics, Limitations, and Employment of the Air Service___ ___ _________________________ 72
Corps Air Ser vice, Field Manual, Provisiona~------- - - - ----- - - --- ---------------------~-- - - -- 74
22
• • In formation
Trammg-Continued. Circular No.
Flying Training Regulations, Provisional__ _______ _______ ___ ___ ___ ____ __________ ___________ __ 81
Manual of Aerial Photography__________________ ______ ___ __________________________ ___ ___ __ 96
Meteorology and Aeronautics___________ ____ ______ _____________________________ ____________ 77
Methods in Observation Practiced with Fifth Corps________________________ __________ ________ 115
Notes for Communications Officers-
Provisional __________________________________________________________ ________ ______ _
Code Instruction __ _________ _______ ___ ____ _ -- __ _______________ ____ ______________ ______ _
Vacuum Tubes----------- --- ---- ---- ------- ------- - -- - ---- -- -------------------------
Pursuit and Combat Flying Training Regulations _________________ __ _____________________ ___ _
Pursuit Pilots ___ ------------------- __ ----- - ---- _____ ________________ ___ ________________ _
Recent Operations, General Principles, Corps and Army Observation, Pursuit, Day Bombardment,
Balloons--- --- ------ -- ----- --- --- -- - --- ------ ----------- ----- ------------- --- -------- -
Regulations for, Corps Air Service Operations Officers ________________ __ __ _________ ___ _______ _
Tactical History of Corps Observation Air Service, A. E. F------ -- ----- - --- ----------- --------
Tactical Manual of Aerial Bombardment _______ _____________ ______ _______ ______ __ _________ _
Transcontinental, First Transcontinental Reliability and Endurance Test ____ _________ ______ __ _____ _
Transport. See "Airplane."
Transport, Wind Tunnel Test _____ _____________________________ ___ _________ __ __ ___ __ __ _______ _
Transverse Loads, Critical Loading of Structural Members Subjected to Combined Axial and Transverse
78
79
80
83
87
76
86
75
140
2
533
Loads------------------------------------------ - - - ------------------------ --- ------------ 581
Treatise for Radio Mechanics_______ ______ _____________ __ __________ __________ _________ _____ ____ 229
Treatment, Z-D Process for Treatment of Light Alloys to Inhibit Corrosion and to Minimize Porosity___ 448
Trip, Report of General Mitchell's ]jnspection Trip_ ________________________ _______ __ _____________ 391
Truss Ribs, Design of Large Trussed Ribs------ --------- ---- -- - ---- -------------- - -- -- - -- -- - -- -- 312
Truss Ribs, Experimental Reinforced Plywood _______________ ---- - --- ________ -- -- ----- ________ 212, 268
Tube:
Airplane Speaking Tube----- -----------------------~---- - -- ---------------------- ----- - --- Spalding Voice Tube ______ ______________________ ___ ______________________ ___ ____________ _
Storage and Preservation of Rubber Goods, Tires, and Tubes _______ ________ ____ _____________ _
Tubing:
Column, Crushing and Torsional Strength of Duralumin Tubing _____ ____ ____ _____ ________ __ __ _
Effect of the Ratio of Diameter to Gage Thickness upon the Torsional Strength of Steel Tubing __ _
PhysiQal Properties of Chrome-Molybdenum Steel Tubing _____ ___________________ _________ __ Thin-Walled Seamless Round and Streamline Steel Tubing _________ ___________ _____ _________ _
Type 1. See "Airplane."
u Udylite Process, Cadmium Plating _________ -------- ___ ____ ______________ ________________ _____ U.S. A. Airfoil. See "Airfoil."
U.S. Engine, Model W-1, Carburetion, Heat Rejection, and Weight Data _________________________ _
U. S. XB-1-A. See "Airplane, XB-1-A."
Universal Test Engine __________ ----- __ ---- ___________ __________ _________________ ----- _______ _
V-40. See "Airplane."
VCP-1. See "Airplane."
VE-7. See "Airplane."
v
67
108
48
470
263
445
247
545
361
47
Valve Lift, Variation in Volumetric Efficiency of an Engine with Valve Lift_____ _____ _____ __________ 356
Valves, Test of Mone! Metal Valves in Liberty Single Cylinder Engine ____________________ _____ ____ 9
Vaporizing Device, Test of The Canton Electrical Vaporizing Device_______________________________ 125
Varnish, Requirements of Spar Varnish for Aircraft_ ____ __ ---------------- ____ --------___________ 494
Velocity Determination in McCook Field Wind Tunnel___ __ ________________ __ ___ __ _______ ____ __ __ 202
Verville Racer. See "Airplane."
Vibration-Fatigue and Vibration of Metals-------------------------- ----- ----------------------- 255
Visualization of Air Flow___________________________ ___ ________________ ________ ___________ ____ 148
Voice Tube, Spalding _____ ___ --------_________________________________________________________ 108
Volumetric Efficiency, Variation in Volumetric Efficiency of an Engine with Valve Lift______________ 356
Vortices-Tip, Shown by the McCook Field Wind Tunnel__________________________________________ 262
Vought. See "Airplane."
w
W-1. See "Engine." •
Walker Radial Engine, Standard Report_ ___ __ __________________________________________________ 251
Wasp. See "Engine."
Water, Determination of Water in Gasoline __ _______ _____ __ ______ __________ _____ ____ ______ ______ 320
Water, Tables Showing the Freezing Points and Specific Gravity of Alcohol Water Mixtures________ _ 178
Weather Conditions in Transcontinental Reliability Test------ - ---- ------- ---·- ·· - -·-- - · -·- - ---- -- 2
j
23
Information
Circular No.
W eh, Plywood Webs for Box Beams___ _ _ _ _ _ _ 516
Welding Process, Adaptability of Hyde Welding Process to Steel Engine Cylinder Construction________ 364
Wheel and Tire:
Special Airplane Wheel and Tire (and Supplement) ________ __ __________________ ---------_____ 154
36 by 8 inch Straight-side ____ _:_______________________________________________________ ____ 207
28 by 4 Straight-side Tire, One-Piece Rim__________________________________________________ 278
Wheels:
Airplane Tires and Wheels (see Addendum) _______________ -------------- ___________________ _
Effect of Spoke Lacing on the Physical Properties of Airplane Wire Wheels _______________ _: ____ _
Shock-Absorbing, J. V. Martin, Static Test ______________________________________ _____ __ ___ _
Static Tests on Standard Airplane Tires and Wheels ________________________________________ _
Wind Tunnel:
Design of In take BelL __ _________________________________________________________________ _
Efficiency of McCook Field Wind Tunnel_ _________________ __ __ ____________________________ _
foCook Field 5-Foot Wind TunneL-------------------------------------------------------
McCook Field Wind TunneL ____________ _________________________________________________ _
Wind Tunnel Te t for Elevator Hinge Moment Coefficients on the Horizontal Tail Surface No. 5 with
Balanced Elevator ___ _____________ __________ ____ _______ ________ ___ ___ _________ ___ ______ ___ _
Wing:
Charts for Solution of Stresses ____________________________________________________________ _
DH-4, Static Test _____________ ________________________________ ------- _____ _ ------------_
Design of Tapered, Internally Braced _____ ---- ------------- - ---- -- - -- - - --- ------- --- - -------
Determination of Best Wing Loading for Single-Seater Pursuit Airplane ________________ _______ _
Effect of Variation in Load Factors on Structural Weight of Wings _____________ ______ _____ ____ _
Internally Braced Biplane Wings __________________________________________________________ _
Junker Biplane---- - - - ----------------------- - - - ----------------------- - -----------------
Load Distribution among the Spars in Multi-Spar Construction ______ ___ _____ ____ _____________ _
Loening, Official Performance Test of Atlantic XC0- 8 _______________________________________ _
PW-1, U.S. A. 21-----------------------------------------------------------------------
Shear Strength of Plywood Webs of Box Beams _ __ ________ _________ _______ _____ ____________ _
Tests on Experimental 15-inch Metal Spars and 11-foot Chord Metal Wing Ribs _________ _____ _ Weights----------------------------------------------------------------------------- ----
Wind Tunnel Test of the Fokker PW-5 with the V-40 Wing and the PW-5 Wing _________ _____ _
Wing Beams, Effect of Routing, Modulus of Rupture, and other Strength Properties ________________ _
Wing Beams, Test on Wing Beams and Steel Tubing Taken from the Fokker D-VIL _______________ _
Wing Construction, Stress Analysis of an Airplane Cellule of the Multi-Spar Type __________________ _
Wing Coverings---------------------------------------------------------------------- - -------
Wing Coverings, Effect of Climate ____________________________________________________________ _
Wing Fittings ________________________________ _____________________________________ _________ _
Wing .Flap, Test of DH-4B Wind Tunnel ModeL------------------------------------------------
Wing Framework, Progress Report on the Study of Torsion on ________ __ ________ __ _____________ __ _
Wing Gasoline Tanks, Covering Wing Gasoline Tanks in Martin Bomber_ _________________________ _
Wing Ribs:
Design of Large Trussed Ribs _____________________________ _______________ ________________ _
Experimental Reinforced Plywood Truss Ribs ____________________________________________ ---
Strength- -- ---- -- - -- - - - -- - - - ---- - -- - - --- - -- --- ----- -----------'------------------- -------
Wing Section, Preliminary Choice of a Wing Section _____________________________________________ _
Wire, Effect of Zinc Plating on the Physical Properties of Streamline Wire _____________________ ____ _
Wireless. See "Radio."
Woods, Properties of Woods at 10 Per Cent Moisture--------------------------------------------­Wright.
See "Engine."
x
Xylidine, Elimination of Detonation by the Addition of Xylidine, Ortho-Toluidine, Benzol, and General
303
537
254
220
217
169
341
196
567
555
36
599
315
318
440
230
394
522
225
587
556
541
474
24C
104
52
250
384
387 ~
552
584
105
312
268
443-
117
201
53
Motors Anti-Knock No. l ____________________________ ------- ________ ---------_ ----- - - - - - - - - 319
z
Z-D, Process for Treatment of Light Alloys to Inhibit Corrosion, to Minimize Porosity, and to Effect
Desired Physical Properties ____________________ __________________________________ - ___ - - _ - - - - 448
Zenith. See "Carburetor." ,
Zinc, Physical and Metallographic Properties of Copper-Zinc-Aluminum Alloys Containing .3mall
Amounts of Magnesium _____________________________________ -- -------- ____ ----------- - ___ - - 393
Zinc Plating, Effect of Zinc Plating on the Physical Properties of Streamline Wire______ _________ ____ 201
NUMERICAL LIST
No. Title of circular and Air Corps Library File No.
*l. Announcement. (D00.12/73 .)
2. Report on First Transcontinental Reliability and Endurance Test. (C71.6/53.)
*3. Air Medical Service; The Aviator's Heart; Roentgen Ray Studies Under Conditions Simulating High
Altitude; Recent Work in Personality Study; The Effects of Smoking on Visual Acuity; A Device
Adapting the Barany Chair to the Rebreathing Tests; Psychopathology Under Low Oxygen Tension;
A ote on Oxygen Supply for Aviators; A Comparison of Two Methods of Applying Prism Tests to the
Eyes; The Speed of Accommodation; Abstracts of the Literature on the Anatomy and Physiology of
the Semicircular Canals; Cultivating the Balance Sense; The Changes in the Content of the Hemo­globin
and the Erythrocytes of the Blood in Man During Short Exposures to Low Oxygen; Circulatory
Responses to Low Oxygen Tension; A Test for the Judgment of Distance. (B63/6.)
*4. The Air Medical Service and the Flight Surgeon. (B63/7.)
*5. Hispano-Suiza Engine, Model E and I, Ignition Timing Instructions and Chart; Dixie Type 800 Magneto.
(D52.41 Hispano-Suiza/56.)
*6. Tentative List of Decorations Awarded United States Army Air Service, American Expeditionary Forces.
(B00.5/11.)
*7. Enemy Aircraft Destroyed by United States Army Air Service. (B00.21/3.)
*8. Destructive Whirling Test of "Micarta" PropeUer (Westinghouse) and Rubber-Covered Propellers with
Hard and Soft Rubber Leading Edges. (D52.43/186.)
*9. Test of Monet Metal Valves in Liberty Single Cylinder Engin e. (D52.41/Liberty/89.)
*10. Present Procedure in Static Testi.1g of Airplane Engineering Division, United States Army Air Service.
(D00.11/5.)
*11. Modified Hart Adjustable Pitch Propeller. (D52.43/189.)
12. "Micarta" Liberty Propeller. (D52.41/188.)
*13. Test of Various Types of Gasoline Hose Connections. (D52.4/2.)
*14. Armament Test of Single Seater Pursuit Airplane. (D52.1/0renco/2.)
*15. Parachute Tests of Model 300, D- 1. (D52.9/91.)
*16. Time Study of the Movement of the Firing Mechanism of the 37 mm. Automatic Baldwin Cannon.
(D72.2/34.)
*17. Comparative Merits of Dixie Magnetos and Delco Battery Ignition System When Used on Liberty "12"
Aero Engine. (D52.41/Liberty/96.)
18. Test of the Alsop All-spark Ignition Device and Measurement of Distances. (D52.413/32.)
*19. Report of Test of French 37 ~. High Explosive Ammunition. (D72.2/32.)
20. Effect of Reduced Engine Compression Pressure on Pre-Ignition with· Mica Plugs. (D13.413/Spark
Plug/42.)
*21. Aeronautical Book and Magazine List. (C13/53.)
*22. Report of Preliminary Test of Bijur Ignition End Starting Motor for Liberty" 12." (D52.41/Liberty/108.)
*23. Report of Static Test on DH-4 (Dayton-Wright) Tail Surfaces. (D52.1/DH.4/90.)
*24. Report on Tests of Modified Firing Mechanism for the Baldwin 37 mm. Cannon. (D72.2/28) .
*25. Report of Static Test of Wing Cellule of Pomilio PVL-8 with Unequal Loads on Right and Left Wings.
(D52.1/Pomilio/10.)
*26. Report on Investigation of Silver Solder. (Dl0.1/66.)
27. Methods of Correcting the Longitudinal Balance of J - 6H Airplanes. (D52.1/Curtiss J r 6/3.)
*28. Vibration Characteristics of the 300 Horsepower Hispano-Suiza Engine. (D52.41/Hispano-Suiza/70.)
*29. Report of Static Test of Fokker Type D-VII Chassis. (D52.l/Fokker/30.)
*30. Report on Airplane Short Wave Radio Telephone Set. (D13.411/35.)
*31. Rate-of-Climb Indicators, Description and Theory. (Dl3.3/51.)
*32. Report of Test of 37 mm. Automatic Cannon in Cannon Engine. (D72.2/33.)
*33. Report on Wind Tunnel Test of Laddon Night Pursuit Airplane. (D52.1/Laddon/1.)
*34. Report of Static Test of the Fuselage of the DH-4 (Dayton-Wright). (D52.l/DH-4/92.)
*35. Comparative Test of Special Homogeneous Gasoline and Commercial Aeronautic Gasoline. (Dll.31/44.)
*36. Report of Static Test of DH-4 (P-34) Wing Cellule. (D52.l/DH-4/91.)
• Supply excbausted. Copies may be obtained on Joan from Air Corps Library, Office, Chief of the Air Corps.
(24)
25
No. Title of circular and Air Corps Library File No.
*37. Performance Test of U. S. X. B. I.-A. with 300 Horsepower Hispano-Suiza Engine. (D52.1/U. S. XBI A/1.)
*38. Report of Static Test of the Landing Chassis of DH-4 (P-34) . (D52.1/DH-4/86.)
*39. Structural Weight Analysis of Airplanes. (D52.1/285.)
*40. Performance Test of Thomas-Morse MB-3 with 3QO Horsepower Hispano-Suiza Engine. (D52.1/Thomas­Morse/
22.)
*41. Standard Engine Report on the Six-Cylinder Benz Aeronautic Engine Rated at 200 Horsepower at 1,400
Revolutions Per Minute. (D52.41/Benz/7.)
42. Power Required to Drive Aeronautic Engine Magnetos and Generators. (D52.4/3.)
43. Report on Wind Tunnel Test of Messenger Airplane. (D52.15/131.)
44. General Descriptive Matter on Dopes and Ins