Index to U.S. Army Air Corps Information Circulars. Part I. Heavier-than-air Circulars Nos. 1 to 677 inclusive. Part II. Lighter-than-air Circulars Nos. 1 to 157 inclusive.

              Auburn University Libraries
nnti..) 1/ {77 1111111111111111111111 1111111111 111111111111111111111111111111 111111111111111111
File C 13/ 117/ 1932/June 30
l~~~3 1706_025_852_07_5~~A
Vol. VII No. 677
INDE
TO
U. S. ARMY AIR CORPS INFORMATION CIRCULARS
PART I- Heavier-than-Air Circulars Nos. 1 to 677 inclusive
PART II- Lighter-than-Air Circulars Nos. 1 to 157 inclusive
For list of Obsolete Circulars and those Circulars the supply of which
is exhausted, see Numerical Lists, pages 29 to 45 inclusive;
and pages 49 and 50
UNITED STATES
GOVERNMENT PRINTING OFFICE
WASHINGTON: 1932
INDEX TO UNITED STATES A'.RMY AIR
INFORMATION CIRCUGARS
PART 1.-HEA VIER-THAN-AIR CIRCUL_~RS
Nos. 1- 677, Inclus ive
SUBJECT LIST
A
C6RPS
A- 1. S ee "Airplane." l;~;~~rr:_~t~~.
ABC. S ee " Engines" ________ .. ___ ____________________ __ ________ ______ ________________ ________ 256
AC. S ee " Spark Plugs ."
Accelerometer s, D yn amic Accel erometer Calibrat ion ______________ ________ __________________________ 668
Accessories, Instruct ions for the Stor!1ge of Airpla n es, E n gines, Their P a rts and Accessories_________ ___ 256
Acciden ts. See "Crashes."
A. E . F ., Fin!1l R epor t of Chief of Air Service to the Command er in Chief_ __________________ ________ 180
Aerial Bombardmen t. S ee " Bombardmen t ."
Aerial Navigation , Instructions, Provision a l_ ___ .. ____ ___ .. _._____________________ __________________ 82
Aerial Observa tion:
F or all Arms ____ _ .. _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 85
For T arget Practice at For t Monroe, Va ___ ______ _____ _______ ____ _____ __ ----- - ------------·-- 142
Methods in Observation Practiced wit h Fifth Corps, First American Army_____________ _________ 115
Aerial Photographs, Use in T op ographic Ma pping________________________________________________ 184
Aerial Photography, Manual_ _ _ ________ ____ ____ _______ __________ _______________ _____ _____ ____ __ 96
Aerial R egulations, Internat ional_ ________ __ ___ _____________________ ___________ _________________ 566
Aerial T actics_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 88
Aerody namic Chords, D et ermination of Center of Gravity and Mean Aerody namic Chord ____________ 605
Aerodynamical Balance for P- lB and P- 5 Airplanes by Standard Analytical Method for D etermination
of C. G. and M. A. C __________ ______ ___________ ______________________ ____________ ___ __ _____ 593
Aerofoil. S ee "Airfoil."
Aeromarine. S ee " Airpla n e."
Aeromarin e. S ee " Engine ."
Aeroma rine Spar, St atic Test of Duralumin Spar_ ____________ ~ ------ --- ---- - --------- -- ------- - -- 524
Aeromarine Propeller, Destruct ive Whirling Test ___ ______ ____ ___ _________________________ .. ________ 137
Aerona utical Book and Magazine List _________ _______________________________ __ ________________ 21
Aeron a ut ics, Meterology and Aeronaut ics ____ _____ __ _______________ __ .. ________________ -________ __ 77
Aileron, Effectiveness ______ _____ ___ ___ ___ _________ ____ _____ .. _________________________ .. _ _ _ _ _ _ _ __ _ 454
Aileron, Wind Tunnel Test of Aileron Characteristics _____________ ___ -------------- - ------------- - 535
Air Bleed, T est of Back Suction and Air Bleed T ype Mixture Controls_ ___ ____ ______ __ ______________ 368
Air Coolers, T est oL _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ __ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 399
Air Flow:
Around a Rotating Cylinder_ ___ _______________________ .. ____
7
_________ ----- ----- ____ _ ___ __ _ 510
Visu al Study of Flow Discontinuity, Cylindrical Camber Airfoil_ _____ ·-----·--·----- - ------------- 564
Visualization of Air Flow _________ ______ __ ___________________ ·------- -- --------- - --__________ 148
Air I ntl'kes, Comparative Effect on Engine Operation ___________________________ ----------------- 286
Air Mail. See " Airplane."
Air Medicine. See ' ' Medical."
Aircraft D evelopment since the Armistice _____________ __ __
0
______________________________ _ - - _ _ _ _ _ 402
Aircraft F ire P revention____ _____ ____ ______ ____ __________ __ __ ___ _____ _________ ___ _____ _________ 5.92
Aircraft I gnitiou , R ecent D eYelopments_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ __ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 611
Airdrome Landing F ield Flood Light T ype A- 1, H andbook of Instruction____________________________ 583
Air fan, H ead R esistan ce Measurement_________ ______ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 63
Airfan, T ype FA- 9 __ ___ ___ .. ______ _____ .. _ __ _ _ _ _ __ _ _ _ _ __ _ _ _ _ _ _ __ _ _ _ _ _ __ _ _ _ __ __ _ _ _ _ __ ___ _ __ __ _ _ _ 62
(1)
2
Airfoil: 6~:g~~~t~~-
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. 227 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 267
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 No-Lift on Propeller Aerofoils __ _ - ---- -- --------- - ------------ --- 147
Airplanes :
A- 1, Wind Tunnel Test ___ _____ __________ ________ ____ _________________________________ -- _ _ 463
A0- 1, Performance Test _______ _ - _____ ___ ___ _____ ____ ______ ____ ___ ______ _____________ - - - - - 506
A. R . Morane Saulnier, Performance Test___ __________ ______________________________________ 285
Aero marine PG-1, Static Test _________ __ __ _____________________ ____ _______ __ .. _____________ 365
Air Mail, Static Test of Bellanca DH_______________ __ ____ ______ _____ ____ _____ __________ ____ 518
Alouette, Stress Analysis __ _______________________ __ ______ __________ ______ ___ ___________ --- 520
Ambulance, Wind Tunnel Test ____ _____ ___ _____________________ __ __ ·_ ______________________ 463
Atlantic A0-1, Performance Test_ __________ ___ ____ _________ _____ _______ ___ ___ --- --- __ -- - -- 506
Atlantic C0-8, P erformance T est _____ _________________________________ ____ __ ___ ______ -----_ 522
Bellanca DH, Static Test_ ___________ _____ _________________ _______________ ___ ______ ___ -- - - 518
Boeing-
PW- 9, Performance Test with Curtiss D-12 High Compression Engine_____________ __ ____ __ 479
PW- 9, Performance Test with Curtiss D- 12 Low Compression Engine__ ____________ ____ ____ 502
PW- 9, Static T est___ _____ __ ______ ____ _______ ___ ___ _____ _______________________ _____ _ 466
Pursuit, P erformance Test _____ ____ ___ ________ __ _____ ______ ________ ______ ____ ____ ___ _ - 460
Bomber, Wind Tunnel T est of Heavy Bomber Study___ _______ ________ __ ______________ _______ 531
C0-1, Wind Tunnel Test________ __ __________________ _____________ ______ __ ____ ______ ______ 321
C0-2A, Wind Tunnel Test ________ _____ _______ ____ ____ ___ ___ ___ __ ____ _________________ -- - - 453
C0-4 Fokker-
P erformance Test---- - -- - --- - -- --- ------- -- ------- - ---- ~-- - - ----- -- -------- ------ -- 415, 507
P erformance Test with Nose Radiators ____________________________________ ________ -- - - - 457
P erformance Test with Side Radiators _________ ___ ________________ __________ ______ ______ 456
C0-5, Performance Test ___ __ ____________ _______ ___ __________________________ __ ____ ____ - 452, 534
C0-6, Performance Test_ ______ ___ _____ ___ ________ __ ________ ________ __ ________ ____________ 521
C0-6, Static T est __ ____________________________ __ ________________ ~ ___ __ __________ ____ __ _ - 508
C0-8, Atlantic__ ____ _____________________________ _________________ __ ___ __ _____ _____ ____ _ 522
Comparison of the Structural Design Requirements for Airplanes with the Loads Obtained in Full
Scale Pressure Distribution Tests _____________ ___ ______ ____ __ _______________ __ ____ - - --- 672
Consolidated PT- 1, Performance T est_ __________________ • _________ __________ _____ ___ ______ 526, 527
Consolidated PT- 1, Static T est_ __________ ____________________ __ ___ ________________________ 559
Consolidated PT- 3, Study of Horizontal Tail Surfaces of_ _____________ ___ ___________ __ ___ _____ 615
Cox Heinkel, Static Proof T est of Aileron, Stabilizer, and Elevator_ ____ _________ _____ __ ________ 514
Cox Klemin TW-2, Static T est_ __ ______ _____ ___ ______ _____ __ ______ ____ _____ ________ __ _____ 437
Curtiss-
JN-4, Impact Test of Tail Skid and Landing Chassis_____________ _________________ ____ ___ 409
JN-6, Cooling System T est with Packard lA- 744 Engine and Side Radiators _________ _______ 294
JN-6H, Methods of Correcting the Longitudinal Balance ____ _____ ____ _ -1- __________ - ---- - 27
Airplanes-Continued.
Curtiss-Continued.
3
Information
Circular No.
NBS- 1, Performance Test_______________ ___ __ _________ ________ _______ _______ __________ 435
NBS-4, Torsional Test of Fuselage_____________________________________________________ 513
Night Pursuit, Static Test_______ ________ ______ ___ ___ ______________________ ____________ 266
0-1, Performance Test_ ____ _____________ ____ _______________________________ __________ 530
0-1, Performance T est with Packard " 1500" Engine_____________________________________ 538
0-1, Static Tests_____ ____ ____________________________________________________________ 539
Oren co "D," Performance Test____ _____________________ ___ __ __________________________ 306
PW-8, Static Test_____ ___ ___ ____ ______ ______ ____ __ ___ __ _____________________________ 492
PW-8, Wind Tunnel Test_____ ______ _____ __ ______________ _____________________________ 501
PW-SA, Performance Test with 400 H.P. Curtiss D- 12 Low-Compression Engine___________ 496
D-VI-B Roland, P erformance Test_______ ______________________ __ __________ _______________ 132
D- VII-Fokker-
Cooling System Flight Test ______________________ ___ ____________________ ______________ 233
Performance Test with Liberty Six Engine______________________________________________ 71
Performance Test with P ackard " 1237" Engine__ ___ _____________________________________ 310
Static Test of Chassis___ _______ ___ _____ ___ _______ __________________________________ ___ 29
Test on Steel Tubing and Wing Beams ______ ____ _______ ___ _____ _______________ _________ 104
D- VIII-Fokker, Performance Test with 110 H. 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 ______ c--~------------------------------------------------------------- 528
Static 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
Wind Tunnel Tests of Model Fitted with Various Fins and Rudders ___ _____________________ 603
Wing Flap Test of Wind Tunnel Model______ ____ ___________________ ______ _____________ _ 552
DH- 4C, Cooling System Test_ __ ______________ __ __________________________________________ 271
DH- 4M2 Mail, P erformance Test _____ __ ______ ___ ________________________________________ __ 386
DH-4M2, Static Test of Fuselage ____ __ _________________________ __ ______________ ·______ _____ 512
Dayton-Wright TA-3, Performance Test_________________________ ____ _____________ __________ 441
Dayton-Wright TA-3, Static Test _____ __ _____ · __ _______________________ --- _ - ________ ----- -- 388
Design, Miscellaneous Collected Airplane Structural Design Data Formulas and Methods_________ 644
Design, Performance and Design Charts_ ______ ___ ______ ____ ________________________ _____ ___ 183
Design of Trussed Metal Spars for Single Bay _____________________________ __ _______ _________ 621
Determination of Best Wing Loading for Single-Seater Pursuit Airplane________ _________________ 315
Determination of Stability from Flight Test Stick Force Data______ ________________ ___________ 625
Determination of Structural Airplane Drag_ ___ ___ __________________________________ _________ 629
Douglas C- 1, Performance Test__ __ ______ ________ ____ ________________________________ ______ 546
0 - 2, Performance Test_ __________________ ._________ ______________________________ _____ ____ 509
0 - 2, Performance Test with Packard "1500" Engine and Small Wings ____________________ _____ . 536
0 - 2, Static Test___ _________________________ _____ _____________ ___________________________ 554
0 - 14, Effect of Ring T ype Engine Cowls on Model of (Wind Tunnel Test 35)________ ____ ____ ___ 659
E-8 Vought, Performance Estimate____________ __ __________________________________________ 176
Effect of Cellule Arrangement on the Rate of Autorotation by the Strip Method_ ________________ 609
Elias NBS- 3, Torsional Test of Fuselage_______ ____ _____ ____________ ________________________ 517
Elias TA- 1, Performance Test____________________________________________________________ _ 412
Endurance Notes_____ ______ _________________________ ____ _________ ___ ____________________ 210
4
Airplanes- Continued. cSfirc~~h:~~~
Engineering Division C0 - 5, P erforma nce T est ______ ________ ____________ ____________ ___ ____ 452, 534
Engineering Division, C0- 6, P erformance Test__ _______ ___ ____ _______ ____ ____ ______________ _ 521
FVL--8 Pomilio, Performance Est imate___ _______ ____ ______ ______ _______ ___ ____ ___ _________ _ 221
Fokker C0- 4-
Perforrn ance T est _______ __ ______ ___ _______ _____ __ _________ __ __ __ __ ___ __ __ _____ __ ___ 415, 507
Performan ce T est with Nose Radiators____ _________ ______ ________ ___ ___ ___ ____ ____ ___ __ 457
Performance Test with Side Radiators ________ ____ ________ _______ ____ _______ __ __ ___ _____ 456
Fokker D- VII-Cooling
System Flight Test ________ ______ _________ _______ ____ ___ _____ _____ __ ______ ____ 233
P erformance Test with Liberty 6 Engine ______ _____ ___ _________ __ _______ __ ___ _______ ____ 71
Performance T est with Packard 1237 Engine________ _____ ____ ____ ______ ___ ____ ______ ___ _ 310
Static Test of Chassis ____ ____________ _____ ______ ___ __ _______ ____ __ _____ __ ___ _______ ___ 29
T est on St eel Tubin g and Wing Beams __ ______ __ ___ - _ - - - _ - _ - ____ _ -- - _ _ __ __ __ ___ _ _ _ _ 104
F okker-
D- VIII, P erformance T est _________ ___ ________ _____ _ - _ - _ - _ - ___ - - - _ - _ _ _ _ 288
D- IX, Performance T est ______ _____________________ __ _____ -----__ __ _______ ____ ________ 413
PW- 5, Stat ic Test oL ___ _____ _____ ____ ___ __________ __________ ____ __________ _______ ___ 406
PW- 5, Wind Tunnel Test_ _____ _____ ____ ____________ _______ ______ _______ ______ ___ _____ 424
PW- 6, Perfo rmance T est _______ __ ______ _____________ _____ ___ ______ ___ ____ _____________ 413
PW- 7, P erformance Test with Curtiss D-12 Low-Compression Engine____ ___ __ ____ _______ __ 529
PW- 7, Sta t ic T est _ _ _ _ _ _ _ _ _ _ _ _ 491
T- 2, In vestigation of t he St ru ctural Str ength --- - - -- -- - ------- - - - ---- - ---~--- - ---- - ------ 420
TW- 4, Perfo rmance T est_ ____ _________ _____ _____ ____ __ ___ -- - -- ____ __________ _________ 414
GA- 2A, Wind Tunnel Test _______ __ ____________ ______ _____ __ --- __ _ ____ _ __ __ _ __ __ ____ _ 476
GAX, P erformance T est ______ ____ ______ -- - --- - - - -- ____ __ ___________ _____ _____ ___ _____ ____ 193
GAX- 1, Stat ic Test of Chassis ______ ________ ___________ __ _____ ____ _ - _ _ _ _ _ _ _ _ 171
GAX- 1, Static T est of Wing Struct ure ___ ____ ____________ ___ ____ __________ __ ________ ___ ____ _ 228
GH- 11 LePere, P erformance Estimate_____ ___ __________ ______ _______ _____ ________ ___ __ _____ 219
Galla udet-
DB- 1, Wind Tunnel Test __ _______ _____ ___ ___ ____ _________ __ ___ ___ ___ __ ___ ___ __ _____ 467, 475
PW- 4, Static Test __ __ _____ __________ _________ _______ ___ _______ ___ ___ ___ _____ ____ ____ 417
PW- 4, Wind Tun nel T est ___ _______ ___ _____ ____ ____ __________ __. ___ _____ __ ____ __ ______ 472
Huff-Daland-
P erformance Estimate of Bi place T raining Plane___ __________ ____ _______ __ __ ___ _____ _____ 296
TA- 2, Performance T est with Curt iss OX- 5 Engine_______ _____ _____ ____ ___ _________ ___ __ 407
T A-2, P erformance T est wit h Lawra nce " R " Engine__________ __ _____ ___ ___ ___ ___ __ __ __ __ 411
TW- 5, Performance T est with Wright " E " Engin e ________ __ __ __ ___ ___ __________ _____ __ _ 499
Induced Drag of Any Biplane ____ ___ _______ __________ __ ____ ________ ____ ___________ ____ ___ _ 607
JL--6. S ee " Airplane, Junkers."
J N- 4, Impact Test of Ta il Skid and La nding Chassis __ ___ _______ _____ _______ _________ ____ ___ 409
JN- 6, Cooling System Test wit h Packard l A- 744 E ngin e and Side Radiators___ _____ __ __ ________ 294
JN- 6H, Methods of Correcting the Longitud inal Balance_ __ ___ ________ _____ __ _____ _____ ___ ___ 27
JV- Mar t in, Physical Tests on K Bar Struts__ ______ ____ _____ __________ ___ _____ __ ___ _____ __ __ 101
Junker-
Biplane, I nvestigation of Wings ______ _______ ___ ___ ______ _____ ___ ____ __ ___ __ ___ ___ ______ 230
L--6, Static Test __ __ ______________ ____ ___ _________ ____ ____ ___ ____ __ .: _____ ______ ____ __ 360
L--6, Stress Analysis___ _____ _____ ____ _____ ______ ____ _________ _____ __ ___ ___ _____ _____ __ 332
L--6, Wind T imnel Test __ ______________ ___ _____ ____ __ ___________ _____ ____ ___ ______ ____ 367
SL--6, Performance Test_ ___________ _____ __________ _____ ____ _____ ___ ___ _____ ______ ____ 173
Keystone B- 3 A, Dy namic T ests of Keystone B- 3A Bomber Oleo Shock Absorber_ __ ___ __ __ _____ __ _ 666
Laddon, Wind Tunnel Test of Laddon Night Pursuit Airplane____ ___ ___ ____ __ __ __ ___________ ____ 33
LePere, Cooling Syst em with Side Radiators ____ ___________ _______ ____ ___ __________ ___ ___ _____ 299
LePere GH- 11, Performance Estimate______ ______ __ ______ ___ _________ ____ ___ ___ ______ _______ 219
Loening-
COA- 1, Performance Test__ ____ __________ ____ __ ______ ______ ____ ________ ___ ____ ___ _____ 540
M-8, Cooling System Test ___ __________ __ __________ ___ ______ ______ __________ ______ __ ___ 206
PA- 1, St atic Test (see Addendum) ____ _____ __ ___ _____ ____ ______ ___ _____ _______ ___ ___ ___ _ 358
PW- 2, Performance Test ______________ __ ________ _________ ___ ___ ____ _______ ________ ____ 434
PW- 2A, Performa nce Test_ _________ ________ ______ __ ___ ________ __ __________ ___ ____ ____ 416
PvV- 2B, Performa nce Test _________ __________ ___ ___ ______ ___ ______ ____ ___ ___ - -- - --- - -_ 433
5
Airplanes- Continued.
Loening-Continued . f::?;g;,y:,~tfgg_
XC0- 8, Performance Test, Equipped with Loening Wings___ _____________________________ 522
Monoplane, Performance Test_ ___________________________ _____ ____________________ ____ 50
M-8 Loening, Cooling System Test_ ______ ·----------------------------------------------- - - 206
MB- 2, Martin Bomber, Cooling System _____ _____________ ___________ ____ _______________ ____ 264
MB- 3 Thomas Morse, Performance Test _______ _____________ ________ ____________________ ____ 40
MB- 3 Thomas Morse, ·wind Tunnel Test__________________________________________________ 468
MB-6 Thomas Morse, Static Test____________ ________________ _______ _____________ ________ __ 362
Mail DH4--M2, Performance Test _____________________________________ __________________ ___ 386
Martin Bomber-
MB- 2, Cooling System_____ __________________________________________________________ 264
NBS-1, Performa nce Test ___ ____ __ __ ·------------- ----------- --------------------- 290, 435
NBS- 1, Torsonial Test_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 515
Static T est of Elevator Controls ___ _______________ ___ __ _ ------------------------------ - 424
Test of Davis 3- inch Nonrecoil Cannon _____________ ----- ----- ------ ---- ------------ ---- 342
Martin JV, Physical Tests on K Bar Struts ____ _ _ __________ . _ _ _______ . _ _ 10 I
Martin T orpedo Airplane, Performance T est ___________________________________ ·- ----- - ·- ---- 139
Messenger-
Performance Test_ _ _ _ _ 280
Static Test ___________________________________ _ ----------------- ------------ - ------- 270
Wind Tunnel Test__________ _________________________ ____________ ___ ___ _____ _________ 43
Morane Saulnier Type AR, Performance Test___ _____________ _____________ __ __ ______ ____ ___ _ 285
NBS-1- .
Curtiss, Performance Test_ __________________ . _ _ _ 435
Martin Bomber, Pe.rformance Tes~-_ ___ __ ____ ___________ _ __________ __ ______________ ____ 290
Mart in Bomber, Torsional Test __________ _______ ___________________ _____ ___________ ____ 5I5
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 - 1. See" Airplanes-Curtiss 0 - 1."
0-2 Douglas, Performance Test with Liberty 12 Engine______________________ ________ ________ 509
0 - 2 Douglas, Performance Test with Packard " 1500 " Engine_ ____ _______ _______ ______ __ ____ _ 536
0 - 2 Douglas, Static Test ____________ _:______________________ _________ ________ ________ __ __ __ 554
Obse1:vation, Wind Tunnel Test of I /20 Scale Model of the Materiel Division Night Observation
Airpla ne_____________________ _____________________________ ______________ ______________ 610
Ordnance D-Arma1n
ent Test____________________________________ ______ __ ________ __________________ 14
Cooling System______________________________ __ ________ ______________________________ 144
Performance Test_____________ ____________________ ______________________________ _____ 51
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
PA- 1 Loening, Static Test (see Addendum) ___________ ________ __ __ ___ __ _____________ ____ __ ___ 358
P G--1, Wind Tunnel Test_ _______ __________________________ ____ ______ --------- ------------ 166
PG--1, Static Test ______________ __ _________________ _ ·- --- _____ ___________ - ------- ----- ---- 365
PT- I , Performance Test ________ ____________ _________ ________________ __ ___ ____ ___ _______ 526, 527
PT- I , Static Test__ ___________ __ ______________ ______________ __ _____ __ __ ___________ _______ 559
PW- I, Structural Design of Cabane Struts________________ __________________________________ 172
PW- I, USA- 27 Wings____________________________________________ ______________________ __ 225
PW- 2, Loening, Performance Test__________ ______________ ___ ______________________________ 434
PW-2, Design and Stress Analysis of Wings______________________ ____ ______ _________________ I50
PW- 2A, Performance Test _________ _________ __ ___ -- "---- --__ _____________________________ _ 416
PW-2B, Performance T est ________________________________________________________________ 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- I2 Low-Compression Engine______________________ ____ 529
6
Airplanes-Continued . 8i:~~'j'!~t~~.
PW- 8, Static Test s____ ___ __________ __ ____ _____ __ ____ ___ ___ ___ __ __ ____________ ________ ____ 492
PW- 8, Wind T unnel Test___ ________ __ __________________ ________ __ ______ _____ _____ __ __ ____ 501
PW-SA, Performance Test with Curtiss D- 12 Low-Compression Engine___ ______ ______ ______ ____ 496
PW- 9, Performance Test with Curt iss D-12 High-Compression Engine _______________ ________ __ 479
PW-9, Performance T est with Curtiss D-12 Low-Compression Engine _____ ___ __ ____ ____ ________ 502
PW- 9, Static Test _______ ___________ _______ ____ __________ __ ________ __________________ _____ 466
Performance-
Empirical-Theoretical Method of Comparative Prediction of Airplane Performance________ ___ 68
Performance and Design Charts_____ ____ ____ ____ ________ _____ ___ _______________ ___ __ ___ 183
P erformance from the Standpoint of Modern Conception of Drag_______ ___ _____ ____ __ ___ __ 560
Theoret ical Method of Analyzing and Predicting Airplane Perfo rmance___________________ __ 553
Phillips "Alouette," Stress Analysis_ _ _ _ _ _ _ _ 520
Pomilio F VL-8, P erformance Estimate_ _______ __ _______ ___________ ___________ ___________ ___ 221
Pomilio P VL-8, St atie Test of Wing Cellule with Unequal Loads on Right and Left Wings ___ ____ _ 25
P ursuit-
Comparative Study of T ype I Airplanes with Various Power Plant s ___ ___ __ _______ ___ ______ 307
Design Characteristic for Most Suita ble Pursuit Airplanes_ ________ _______ __ ___ _______ _____ 436
Determination of t he Best Wing Loading ________ _______________ ________ __ _________ _____ 315
Wind Tunnel Test of Laddon Night Purs uit Airplane_____________________ __ _____________ _ 33
Rigidity and Flexibility of Airplane Structures_____ __ ___ __ ______________________________ ___ __ 642
Roland D- VI- B, Perform ance Test _c____ __ _ _ _ _ _ _ _ _ __ _ _ _ _ _ ___ _ 132
S- 6, Thomas-Morse, Performance Test_____ ____ _________________________ ___ ______________ __ 109
SE--5, St atic Test of Ski_ __ ________ _______________ _____ __ ______________ ___________ __ ______ 322
SL-6 Junker, Performance Test ________________ _____ _________ ______ __ ________________ _____ _ 173
Silhouettes of ________ _______ ________________________ ___ ____ ______ ___________ _______ ____ __ 585
Spad 13, Performance Test with 220 H.P. Wright Engine ____ ___ ____ ___ _______ _____ _____ ______ 286
Spad 16- A, Performance Estimate with 236 H. P . Lorraine-Deitrich Engine __________ _____ ______ 153
Spinning Charact eristics_ _____________________ ___ ______ ____ _____ __ ___ __ __ _____ ___ _____ ____ 613
St ability_ __ _____ ____ ______ ___ _______ ____________ ____ _________ ____ ___ _________ ______ ___ __ 548
Structures, Study of Dural and St eel for_ ___ ______ _____ ___ ____________ __ ____ _____ _______ ____ 568
T-2 Transport, Investigat ion of the Structural Strength ____ ___________ ____ __ _____ _____ __ ______ 420
TA- 1 G. Elias, P erformance Test with Lawrance R- 9 Engine________ ____ __ ____ _______ ______ ___ 412
TA- 2 Huff-Daland, Performance Test with Curtiss OX- 5 Engine_______ ____ __ __________ ______ _ 407
TA-2 Huff-Daland, P erformance Test with Lawrance " R " Engine _______ ______ __________ __ __ __ 411
TA- 3 Dayton-Wright Performance Test___ ____ ___________ ___ __ ______ _______ ___ ___ ____ _____ _ 441
T A-3 Dayton-Wright, Static Test ____________ _______ ___ _______ ____ ___ __________ ___ __ __ _____ 388
T A-4, Wind Tunnel Test_ ________ ________ ____________ ___ ______ _______ ______ ___ __ ____ _____ 455
TW- 1, Test of Cooling Syst em____ __ ___________ _______ ______________________ __ __ ______ ____ 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
S- 6, Performance T est ________________ ___ ______ ____ _________ __ ___ ___________ ___ __ _____ 109
Tires. See " Tires."
Transport, Wind Tunnel Test ________ __ ______ _________________________ ___ _________________ 533
Transport T-2, Investigation of the Structural St rength __________________________ ____________ 420
Type 1, Comparat ive Study with Various Power Pl ants________ __ _________ ____________ ________ 307
V-40 Fokker, Wind Tunnel Test ____ ___ __ ______ __ ________________ _________ ___ ____ __ ______ __ 472
VCP-1, Cooling System Tests with Annular Radiator_ ______ ____ _______ ____________ ____ ______ 245
VE--7 Vought, Pressure Distribution over t he .Stabilizer_ ___________ _____ ___________________ ___ 419
Verville Racer, Wind Tunnel Test _________________________________________ _________ __ __ - - ~ _ 107
Vought--
E-8, P erformance Estimate________ _________ __ __________ __ ______ _______________ _______ 176
VE--7, Pressure Distribut ion over the Stabili zer_ _________________________________________ 419
XV Navy T ype, Perfo rmance Test ________ ~____________________________________________ 352
Weight, Structural Weight Analysis _________ __________ ___________________ __ __ _ -~___________ 39
Wheels. Ser; "Wheels." -
'7
Airplanes-Continued.
XB- 1-A- Information
<. ~ir cu lar No.
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_ ____ ___ ____ ____ ____________________ ___ _____ __ ___ __ _____ _______ ___ ___ __ ___ _
Airship: Full Scale Tests of the Semi-Rigid Airship RS- L ____________________________________ __ _ 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 and Metallographic Properties of Copper-Zinc-Aluminum Alloys Containing Small Amounts
of Magnesium~ _________________________________________________________ ______________ _
Metallography of Sand Cast Aluminum Alloys ________ ___ __________________ __ ____ __ ______ ___ _
Z-D Process for Treatment of Light Alloys to Inhibit Corrosion and to Minimize Porosity __ _____ _
Almen. See "Engine."
Alouette. See "Airplane."
Alsop, Test of Alsop All-Spark Ignition Device ___ ____________ - -- ---- _______ __ ____ __________ ____ _
Altitude, Standard Altitude Chamber Test for Engines __________ ________ ____ ___ __ ___________ ____ _
Altitude, Variation of Horsepower with Altitude __________ - - - -- -- - -- - - - - - ---- __ __ _____ ______ _ ,- - _
__.-Aluminum:
Physical and Chemical Properties of Aluminum and Aluminum-Alloy Sheets-
Part I ___________________ ___ ___ ___ _____ ___ __ _____ ____ ______ __ ____________ __ ____ __ __ Part II - ---- - - ----------- --- - Part III ______________________-_-_-_--_-_-_-_-_-_-_-__--_-_-_-_-_-_-_-__--__--__- _- _-_--__-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_- -_-__-_- -_-__- -_
Aluminum Alloys:
327
37, 65
338
352
72
84
619
404
450
178
295
385
393
449
448
18
106
92
123
208
235
Copper-Silicon-Aluminum Alloys v\'ith and without Manganese ______________________________ - - - 385
Metallography of Sand Cast Aluminum Alloys _________ __ __ ___________________________ - - -- - - - 449
Physical and Metallographic Properties of Copper-Zinc Aluminum Alloys Containing Small Amounts
of Magnesium_ __ ___ _______ __ __ ______ __ ____________ ___ _________________________________ 393
Aluminum Bronze, Methods of Making Aluminum Bronze Castings______________ _____________ ____ _ 376
Alu1ninum Solders _________________ _______ __ ___________ _____ _____ _____ ________ ____ _ - -- ___ - - -- - 298
Ambulance A-1, Wind Tunnel Test ____ ____ ___ ________ _____________ ____ _________ __ __ __ ____ - -- - - 463
Ammunition, Pyrotechnic Projector and Ammunition Submitted for Test__ _________ __ _______ _______ 389
Ammunition, Test of French 37-millimeter High Explosive_____ ____ ____ ___ ________ __ ___ ______ _____ 19
Analysis of Aircraft Accidents __________________________ ____ __ _________ __ ___________ ------ - - --- 633
Analysis of Supercharging _________ ________ ___ __ ________________ __ ___ _______ ___ __ _____ ____ __ _ - - 195
Angular, Method for Determining the Angular Setting of a Tail Plane____ __ ____ ________ ____________ 102
, Angular Velocity, Controllability, Angular Velocity, and Dynamic Stability of an Airplane about the Axis
of Pitch__________ ____________ ___________ ___ ______ _________ ____ ___ _________ ____ ______ ______ 418
Anti-Knock, Elimination of Detonation by the Addit ion of Xylidine, Or tho-Toluidine, Benzol, and
General Motors Anti-Knock Jo. L __ ___ ___ ___________ _____ ____ ___ _____ ____ _____________ ---- - 319
Anti-Knock, Flight Test of Ant i-Knock Injector ______ __ ___ _________ ___ __________ ____ ______ - - --- - 372
A0-1. See " Airplane."
Armament, Test of Orenco Type D Biplane _____ ___ __________________________________ ----- - - - - - - 14
Armor Plate, Ballistic Properties of a Special Case-Hardening High Chrome-Nickel Light Armor Plate__ 234
Armor Plate, Cork and Air Spacing of Light Armor Plate ________ ___ ____ __ __________ ____ - _ - - - - - - - - 242
Aspect Ratio of Single-Bay Pursuit Biplanes ___ __ _____ _______ ____ ___ ___ _______ __ _ --~--_ -- - - - - - - - 260
Assignment, Observation, Selection, and Assignment ____ ___ ______ ____ _________________ ____ --- --- -- 120
Atlantic. See " Airplane."
Automobile, Radio Equipped Automobile ___ _______ __ _______ ________ ___ _____ _______ -- - - - --- - - - - - 185
Autorotation Calculated by the Strip Method, Effect of Cellule Arrangement on the Rate of__ _______ ___ 609
Axial Loads, Critical Loading of Structural Members Subjected to Combined Axial and Transverse Loads _ 581
124501- 32- -2
8
B
BI-A. See "Airplane XBI- A." dfr~1~I~:t~~-
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 of_ ____ ________________ _____ _________ _____ ____ ____ ____________ ___ ____ 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__ _____ ______________ __ ___ _____ _____ _________ _________________ ____ 4 73
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_ _ _ _ 57 4
Beams:
Charts for Solution of Stress in Wing Beams______ __ __ __ __ ____ __ ____________ __ ___ _______ __ __ 555
Deflection of Beams of Nonuniform Section_________ _________ __ ____________ __ ____ ______ ___ __ 213
Design of Plywood Webs for Box Beams___________ __ __ _____ ____ __ __ __ ______ __ ___ ___ _______ _ 516
Effect of Routing on Modulus of Rupture and Other Strength Properties _____ ____ __ ___ ___ ____ __ 240
Longitudinal and Transverse Shearing Stress in a Beam of Constant or Variable Cross-Section ___ 674
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
Precise Formulas for Restrained Beam with Axial Load of Compression and with One Restraining
Moment Known ___ ___ ___ _____________ __ ________ ___ · - ___ ___ _____ ____ ___ _________ _____ . _ 624
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."
Biplanes:
Induced Drag of Any Biplane ______________ ____ __ _______ _____ : _ _ _ _ _ 607
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."
Bomb Racks, Modified Weed Shackle_______ ____ __ __ ______________ _______ _______________________ 305
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 oL _ _ _ _ _ _ _ _ _ 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__ _______ _____ _____ ____ ____________ ___ ___ ___ _____ ____ _______ _ 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. 1102L ____ __ 275
Buzzer Starter, Fifty-hour Endurance Flight Test ______________________ __ ______________________ __ 302
9
c
G--1. See "Airplane."
G--8. See " Synchronizer." 6'[1g~v,:~t~~­Cadmium,
Plating by Means of Udylite Process__________________ ____ _________ __ _________________ 545
Calculations, Standard Method of Engine Calculati ons ___ _______ ______ . --- ------- ----------------- - 421
Calibration Constant of Wright Field Five-Foot Wind TunneL _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 643
Cam. See "Engine."
Cam-Shaft, Comparative Mathematical Analysis of the Stresses in the Cam-Shaft Drive Gears of the
Liberty "12" and the P ackard "2025 " Engines_______________________ _______ ________________ __ 423
Cannon:
Baldwirr, Ground Test of Baldwin 37-millimeter Cannon _______ .___________________ ___ ___ ______ 215
Coventry , Ground T est of Coventry 37-millimeter Mark III Airplane Cannon_______________ ____ 226
Dav is 3-Inch, T est of D avis 3-Inch Nonrecoil Cannon Mounted in Martin Bomber_ _________ _____ 342
Ground T est of Cannon Turret Mount___ _____ __ ________ __ ____ ____ __________________ _____ ___ 112
Ground T est of 2.95-Inch Airp lane Cannon in Martin Bomber_ ______ ·--- - ---- - - -- - ------------ 146
T ests of Modified Firing Mecha nism for Baldwin 37-millimeter Cannon_ _____ _ __ _____ _______ ____ 24
T est 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, T ype "A" Test_ _____________ ______________________________ ___ _____ __ ____ _ 283
Carburetor:
Calibration of Jet Flow Carburetor_ __ ________ _ ~__________ _ ____ ___ __________ ___ __ _ _ _ __ ______ 243
Development and Test of Stromberg NA- Y5D for Curtiss D- 12 Engine ______ ________ ________ __ 572
D evelopment and Test of Zenith ED- 52 for Liberty "12" Engine____ _____ __ _____ _____ ___ __ ____ 570
Effect of Fuel H ead at Carburetor on Brake Horse Power and Brake Specific Fuel Consumption___ 336
Instructions to D esigners___________________ _________________________ __________ ____ ____ __ __ 291
Metering Cha racteristics, Control of Carburetor by Supplementary Admission of Air_ __ __ ___ ___ __ 292
Metering J et Calibration ____________ __ _________ __ ___________________________ ____ ________ __ 569
Mixture Controls, Instructions to Pilots___________________________________________________ __ 257
NAY-60, D ynamometer Calibration Runs on Curtiss GV- 1570 Engines____________ _____ ________ 630
Sediment D eposit in Carburetors_________ __ _______ _____ __ __________ _________ _______ ______ __ 390
Setting for t he Liberty Engine for Dirigible Use__ __ ______________________ ___ _________ ________ 311
Stromberg:
NA-D6, T est t o 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 T ype Mixture Controls in Flight ___ ____ ___ ·- - ------------- 368
T est Chamber and Met hod of Ma king Computations--- -- --------------------·--------------- 405
Zenith:
Test of Canton Electrica l 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:
H eat Treatment of Sand Cast Duralumin______ _____________________________________________ 408
Metallography of Sand Cast Aluminium 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 Ma j. William Mac Lake__ ___ _____ ____ 4
Casualty Statistics and Causes, First Transcont inental Reliability and Endurance Test___ _______ _____ 2
Cellule:
Arrangement on the R ate of Autorotation Calculated by the Strip Method of_ ___ __ ~ ------------- 609
Consolidated PT- 3 Airplane Wing Cellule in High and Low Incidence_______ ___ _____ _____ ____ __ 626
Wind Tunnel T est of 1/24 Scale Model of the Douglas 0 - 2E-1 Airplane Wing Cellule Through 360
Degrees______________________________________ ____ ________ ______ ___ ____ __ __________ __ __ 612
Chamber, Carburetor T est Chamber and Method of Making Computations___ _____ ___ _____________ _ 405
Chamber T est, Standard Altitude Chamber T est for Engineers - ----------·- --- - - ------------------ - 106
Characteristics, Limitations, and Employment of the Air Service ______ __ __________ ______ ______ ___ --- 72.
Chassis. S ee "Airplanes" .for Each Particular Type.
Chief of Air Service, A. E. F., Final R eport to the Commander in Chief, A. E. F___ __________ ____ ____ 180
Chrome-Molybdenum, Physical Properties of Chrome-Molybdenum Steel Tubing _______ ___ __ ___ ----_ 445
-
10
Information
Circular No.
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 Formulns ___ ______ ____ __ ____ ______ ___ ___ ··- _ __ _ _ _ _ _ _ _ _ _ _ _ _ 395
Columns, Tests on Combined Loading of Wooden Struts_ _____________ ____________________________ 276
Column Charts, N omographic Column Charts_________________________________ _________________ 304, 446
Combined Loading, The Investigation of Structural Members under Combined Axial and Transverse
Loads---- ---- - -- --- ---------- -- ----- - ··-------- --------- ------- - -------------------------- 493
Communications Officers.
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 T ypes of Gasoline Hose Connections __ ---- -- - ---- ----------------- --- 13
Consolidated Aircraft Co. See " Airplane."
Control Cable Guide Test ______ ___ ______ _____ _____ __________ _________________________________ 95, 110
Cont rol 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, T est __________ .. ____ __ __ __________ ______ _________________ ·-_______________ __ _ 206
Martin Bomber MB-2, T est __________________________________ ____ ____ _ --·- _____ ____ _____ -- _ 264
Mechanical Difficulties of Prestone Coolin·g at 300° F. Outlet Temperat ure ___________ _______ ___ _ 670
Ordnance Model D, Test _____ ____________ _____ ____ ______ _____________________________ __ -- _ 144
Revisions in Cooling Systems for Air Cooled Cylinders _______ _______ ____ __ ________________ ___ _ 1211
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 8ma.ll
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 Met al 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
Cowls, Wind Tunnel Tests of Venturi Type Cowls and Engine Nacelles Suitable for Multi-Engine
Airplane ______ ___ _____ _____ ______ ________________________________ _____________ _____ ___ ___ _ 647
' ' I
11
Cox-Heinkel. S ee "Airplane." Information
Cox-Klemin. See "Airplane." Circular No.
Cracking of Alloy Steels During Dip Brazing ___ ______ _______ _____ __ ___ _____ ____ ________ _________ 295
Crank Shafts, Vibration Characteristics of Aircraft Engine Crank Shafts______ ______ ______ ______ ____ 664
Crashes:
Analysis of_ ___ ________ _ -·--- ___ -·-__ _____ _______ __ ___ ______ _____ __ __________ ______________ 633
United States Army Air Service During Calendar Years 1918-1921, and Results of Physical Exam-inations
for Flying During the Calendar Years 1920 and 1921_ ____ ___________ ____ ___ ___ ______ 340
United States, Statistical Study of Aircraft Accidents and Forced Landings_ _____ ___ _____ ___ ___ __ 652
Critical Loading of Structural Members Subjected to Combined Axial and Transverse Loads__ __ __ ____ 581
Crystal-On, Test of Sample of Crystal-On and Report on Nonfog Giving T reatment of Glass_ ___ ______ 182
Curtiss. S ee "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 P osition and Number of Spark Plugs___ __ ___ ____ 401
Flow of Air Around a R otating Cylinder_______ _______ ____ __ ______ _________ __________ ____ __ _ 510
Instructions for Reinforcing Liberty Cylinders __ _________ __ ___ "_ __ __ ____ ______ __ ____ __ __ ___ __ 504
Lawrance-10-hour Endurance Test of All-Aluminum Cylinder_________ ___ __ ____________ ___ ____ _ 192
Liberty, Test of Standard Liberty Cylinder Mounted on a Universal Engine Crankcase__ ____ ___ __ 199
Smith, P erformance 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, Adapt ability of Hyde Welding Process to Steel Engine Cylinder Construction__ _____ 364
D- VII. See " Airplane."
D- 12. See "Engine."
DB- 1. See "Airplane."
DH. See "Airp lane."
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, T ype "A"_ _____ ____ ____ __ ________ ___ _______________ ____ _____ ____ 439
Decorations, Tentative List Awarded Army Air Service, A. E . F . - _ ___ _ _ _ _ _ __ _ _ _ _ _ _ _ _ __ _ _ _ __ _ 6
Delco : '
Automatic Generator Cut-out, 50-hour Endurance Flight T est ________________ __ ___ ___ _________ 282
Comparative Merits of Dixie Magnetos and Delco Ba t tery Ignition System____ ___ __ __ ____ ______ 17
R eport on Foster Modification in Liberty Delco Switch Assembly.__ _____ ____ __ ________________ 66
Design :
Airplane P erformance and Design Cha rts ______ _________ ___ - ,- -- __ ______ ______________ ____ ___ 183
Characteristics for Most Suitable Pursuit Airplane__ __ _______ _______ _____ ________ _____ __ _____ 436
Design of Cabane St ruts for t he PW- 1 with R. A. F. 15 T apered Wings______ ____ _____ ___ __ __ __ 172
Design of Standard Lugs __ ___ ___ _____ ·· - - --____ _______ __________ _______ __ __________ __ ______ 152
Design and Stress Analysis for PW-2 Night Pursuit T ype_ __ ______ __ ___ _____ ____ ___ ____ __ ____ _ 150
Destructive Whirling Test of Aero Ma rine Propeller _____ ____ _____ ___ ____ ____ ___ ________ ____ __ ___ _ 137
Destructive Whirling T est 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 Ra dio, T ype SCR-142 ______ __ __ __ ____ ___ __ __ __ __ ____ ____ __ _ - ~ _. _ _ 238
Dixie Magneto. See "Magnet o."
Dope:
Airplane Doping and Dope Room Requirements. _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 655
Dopes and their Application ____ _____ ___ _______________________ ___ _____ ______ __ _____ _______ 544
General Descript ive 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."
12
Information
Circular No.
Drag, Airplane Performance from the Standpoint of Modern Conception of Drag__ _ __ ______ _____ ____ 560
Drag, Determination of Structural Airplane Drag __ _____ ··-__ _____________ _________ _____ _________ _ 629
Drag, Induced Drag of Any Biplane _ __ __________ _________ ____ ________ - - _ _ _ _ __ _ _ _ _ _ _ _ __ _ _ _ _ __ _ 607
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
H eat Treatment of Sand Cast Duralumin_ __ _ __ _ __ _ _ _ _ _ _ _ _ __ _ _ _ _ _ _ _ ___ _ ___ _ _ _ __ _ _ _ _ _ _ _ _ _ _ __ _ 408
Duralumin Channels, Compression Strength___ _______ __ ___ _____ _____ ___ ______ ___ ____ __ ______ ____ 598
Duralumin Spar, Test of Aeromari:rie Duralumin Spar_---- -- -- --------- ·- -- - -- -- -- - --- - -----·------ 524
Dynamic Stability, About the Axis of Pitch____ ________ ______________ ___ ____ ________________ ____ 418
Dynamic Test of Long Stroke Oleo Strut with Compensating Valve_ ________ ____ ____ _____ ____ _____ _ 658
D ynamometer Carburetion Runs on Curtiss GV-1570 Engines_ ___ ___ __ _________ ______ _____ __ ______ 630
E
Efficiency, Variation in Volumetric Efficiency with Valve Lift _____________ ____ _______________ __ ___ 356
Elastic Axis, Determination of the Elastic Axis and Natural P eriods of Vibration of the Atla ntic C--2A
Monoplane Wing __ _ ___ ____ ___ _____
7
__________ _ __ ______________ ____ ____ _ _______ _ _ _ ___ _ _ ____ 645
Elastic Axis, Static Test and D etermination of the Elastic Axis of the (Materiel Division) Improved
Stressed Skin Type Glider Wing_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 646
Elastic Weights, The Computation of Truss Deflections by the Method oL _____ ___________________ ·_ 620
Elevator Hinge Moments, Wind Tunnel Test for Elevator Hinge Moment Coefficients on the Horizontal
Tail Surface No. 5 with Balanced Elevator_______ __________________ ____ ______ _________ ______ __ 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
Enemy Aircraft Destroyed by United States Army Air Service__ ________________________ __ _____ __ __ 7
Engine Cleaning Fluids, Inflammation Tests_~--_______________________________________ _ ___ _ ___ __ 588
Engine Cowls, Effect of Ring Type Engine Cowls on Model of Douglas X0-14 (Wind Tunnel T est 35) __ 659
Engine Heater, Test of Airplane Engine Heater_ ___ ________ ____ ___ ___________ ·____________________ 232
Engine Horsepower, Method for Computing Horsepower Available from Engine with Two-bladed Wood
Propeller---- -- -- ---------- -- - -- --- ---- ~------- ------------------- - ------------------------ 505
Engine Horsepower , Variation with Altitude________ ____ _____ ___ __ _____________________ ____ ____ __ 92
Engineering Division, Air Service, Index to Technical Reports of, Nos. 1- 1300, January, 1918- June, 1920_ 93
Engines:
ABC--
Dragonfly, Cylinder Test of___________ _________ ________ __ ___ ___ _______ ____ ____________ 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
Almen Barrel, Standard Engine Test__________ _______________ __________________________ ___ _ 205
"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
C-6. See "Engine, Curtiss C-6."
C-12. See "Engine, Curtiss C--12."
Calculations, Standard Method _____ ___ __ __ ________________________________________________ 421
Curtislil-
C--6, 50-hour Endurance Test____ _______ _______ _________________ __ ____ ______ _____ __ ____ 272
C-6, Standard Engine R eport ___ ___ ______ __ _______________ __________ ________ ___ ______ _ 329
C-12 (Geared), Standard Engine Report______ ___________ ________ __ _______ ___ __ __ ___ ____ 330
D-12, Development and Test of Stromberg NA-Y5D Ca rburetor for_ __ ___ ___________ ______ 572
D-.12, Standard Engine T est, of High and Low Compression Engines___ __ ___ _______ _____ __ _ 550
GV-1570, Dynamometer Carburetion Runs on_____ _____________ ________ __ ____ _____ ______ 630
OX-5, Test_ _ ___ ___ ____ ____ _________________________________________________________ 373
Curves for Estimating Fuel Consumption on the Basis of Piston Displa cement and Revolutions
per Minute-•• -- -------------·-- --- ------------------------------------------·-·-- ---- - 375
13
Engines- Continued .
Dragonfly. S ee "Engines, ABC Dragonfly."
E-6. See "Engines, Rausie." Information
Circular No.
Effect of Reduced Engine Compression Pressure on Pre-Ignition with
Fuel Pumps. S ee "Pumps."
Micarta Plugs_ __ __ _____ ___ 20
Gasoline Hose ConnecUons __ ___ __ _____ ___ _____ _______ ___ __ ___ ______________________ ______ _
Geared, Performance and Design of Five-geared Engines __ ____ ___ _____ __ _____ ________ ____ ___ _
Hall-Scott L- 6, 50-hour Endurance Run _____ ___ _____ _____ ____ ____ ___ ___ ________ ___ ________ _
Hall-Scott L-6, Standard Engine Report _________ ____ __ __ __ ____ _____ __ _ .. ___ .. _______ __ _____ _ Hispano-Suiza-
E, Variation in Performance with Degree of Throttle Opening ____ ___ ___ ___ __ __ ___________ _
E and I , Ignition Timing Instructions and Chart ____ _____ ___ ___ ____ ______ __ ___ _________ _ H, 300 HP.; 50-hour Endurance Test, with.Cracked Crankcase ____ ___ ____ :. _____ _________ _
H, Test with Pistons Which Give 6.5: 1 Compression Ratio ___ __ ______ __ ______ ____ ___ ____ _
K (Cannon Model), Test of ___ _____ ____ __ __ __ ___ __ ___ ____ _____ __ __________ __ _________ _
Performance Test of Hispano-Suiza with Airplanes. See "Airplanes."
Report of Cannon Test on Hispano-Suiza Engine ___ ____ __ __ ___ __ ___ __ - __ - - - ___ - - _______ _
Starting Torque on Liberty, Hispano-Suiza, and other Aviation Engines ____ _____ __________ _
300 H.P. and Liberty 12, Induction System Pressure ______ __ ______ _______ ___ _______ __ ____ _
300 H. P., 50-hour Endurance Test at High Speeds ____ __ ___________ ____ __ ----- ____ __ ____ _
300 H. P., Vibration Characteristics ______ ___ __ __ _____ ______ ___ . ___ __ __ ___ ___ _________ _
Torque Stand and Flight Test of Compression Relief Device _______ ______________________ _
With Steel Cylinders _________ __ ___ _____ __________ __ _____ __ ___________ _____ __________ _
See also "Engines, Wright."
Ignition. See "Ig11ition."
Isotta-Fraschini V- 6, Test ________ _____ ______ _____ __ ____ _____ ___ ___ ____________ __ __ ______ _
L-6. See "Engine, Hall-Scott."
Lawrance, Standard 50-Hour Endurance Test _____________ __ _____ ___ ___ ____________________ _
Lawrance, 10-Hour Endurance Test, Lawrance, All-Aluminum Cylinder_ ____ _____ _____ - ________ _
Liberty-
Air-Cooled, 50-Hour Test ____ ____________ ________ __ _____ ___ _______ ___ - ----- ___ --- - - - __
Comparative Flight Performance of, equipped with 5.42 and 6.5 Compression Ratios _______ _ Comparative Test of Auxiliary Starting Devices __ ____ ___ ___ ____ ______ ___ ____ ___ __ ______ _
Determination of Carburetor Setting for the Liberty Engine, for Dirigible Use ___ __________ _
50-hour Endurance Flight Test of Buzzer Starter _ ____ ___ ____ __________ ______ _______ --- --
Flight Test of Packard Fuelizer ___ __ ___ ___ _____ ___ __ __ -- -- - - - - - ____ ______ __ ____ ______ _ Foster Modification on Liberty Delco Switch Assembly _______ __ __ ___ ___ ____ ____ __ __ ___ __ Free Throttle Endurance Test of Liberty Engine ____ ____ _____ ______ __ ___ __ __ ____ ___ _____ _
Fuel Consumption Test of DH- 4B with Liberty Engine ___ ____ ____ __ __ _______ __ ______ ___ _
Ignition System Instruction Board _______ ____ ____ _____ __ ___ ___ ___ __ __ __ ___ _____ __ _____ _
Instr,uctions for Reinforcing Liberty Cylinders ___ _____ ___ ___ ___ ____ _________ _____ __ ____ _ Minimum Fuel Head to Operate Liberty 12 Engine on Propeller Load ____ _____ ___ ________ _ Single Cylinder, Test of Monel Metal Valves ____ ___ ___ _________ __ __ ________ __ ___ ___ __ __ _
Standard Cylinder Mounted on a Universal Engine Crankcase, Test oL ___ __ ___ __ __ ___ ____ _
Starting Torque _____ __ __ ____________ __ __ ____ ____ _____ _________ _____________ ___ -------
12 and 300 H.P. Hispano-Suiza, Induction System Pressure ___ ___ ____ _____ __ ___ ______ ____ _
12 and Wright-Hispano 300 H.P., Operating on Automobile Gasoline ___ __ ____ __ ___ ___ ____ _
12, Bij ur Starter _____ ________ __ _________ ___ __ __ _____ _____ __ __ __ ______ __ ____ ___ __ ____ _
12, Buzzer Starter, 50-hour Endurance Flight Test ____ ___ ___ ____ ___________ ____ __ ___ - ----
12, Comparative Mathematical Analysis of the Stresses in Cam-shaft Drive Gears of Liberty
"12" and Packard "2025" Engines _____ _____ ____ ____ _____ ___ __ _____ - - - -- - -- ---- --- - -
12, Comparative Merits of Dixie Magneto and Delco Ignition Systems __ _____ ______ __ _____ _
12, Development and Test of Zenith ED-52 Carburetor for_ ______ __ ____ ____ ____ - - -- - -----
12, Performance, with a Compression Ratio of 6.5 to L __ ______ __ ____ ___ ___ __ ___ __ __ _____ _
12, Preliminary Test of Bijur Ignition and Starting Motor_ ____ ___ __ _____________________ _
12, Test of Standard Water-Cooled Engine with Various Piston Rings and Arrangements ___ _
Lion. See "Engine, Napier Lion."
Materials, a Metallurgical Report on Materials Used in Foreign Aeronautical Engines __ __ ___ ____ Napier-Lion, Standard Engine Report_ __ ------ - ---- - - ______________ ___ ___ __ ___ ____ --- - -- ---
OX- 5. See "Engine, Curtiss OX-5."
13
143
149
127
354
5
279
333
159
32
126°
223
170
28
131
64
177
122
192
551
293
111
311
302
134
66
523
346
48
504
422
9
199
126
223
227
22
302
423
17
570
261
22
638
222
157
Engines-Continued.
Packard-
14
Information
Circular No.
lA-744, Standard 50-hour Endurance Test______________________________________________ 135
lA-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 Analysis of the Stresses in Cam-shaft Drive Gears of the
Liberty " 12" and Packard " 2025 "____ __ _ __ _ _ __ __ _ __ __ _ _ _ _ _ _ __ __ _ 423
Parts and Accessories, Instructions 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
Rau~ie 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, Isotta-Fraschini." ·
Variation in Volumetric Efficiency of an Engine with Valve Lift _____ ___________ ~---------- ---- 356
W-1:
Carburetion, Heat Rejection, and Weight Data__ ____ ________ _____ _________ ____ __ _____ __ _ 361
50-hour Hndurance Run _____ _______ _____ ___ ________ ___ ________ ___ _______ --- -__ ___ __ __ 326
Stress Analysis _______ ·_________________________ _______________________________ __ ______ 447
Walker Radial, Standard Report____________ _____ _______ ________ ___________________________ 251
Wasp ABC, Standard Engine Report ___ ___ ____ _______ ____ ______ ________________ ___ ______ - __ 167
Wright-
H- 2, Performance_ _____ ______ ________________________________________________________ 344
Hispano, Operating on Automobile Gasoline__ _____ ________ ______ ______ __ ________________ 227
See also "Hispano-Suiza."
England, Report of General Mitchell's Inspection Trip____ ____________ ___ _______________ ______ ____ 391
Exhaust Equipment Temperature Determinations ___ ______ _____________________________ ------- - - - 594
Exhaust, Wind Tunnel Test of the Effect of Rake Angle on Suction in Exhaust Stubs________________ 179
F
Fabric, General Descriptive Matter on Dopes_________________ __ _____________________________ ____ 44
Fabric, General Descriptive Matter on Fabric, Tapes, and Cords -- -- -------------------------~- - -- - 45
Falling Man, Determination of the Rate of Descent of a Falling Man and of a Parachute Weight_____ _ 628
Fatigue and Vibration of Metals__ ___________________________ __________________________________ 255
Fatigue of Metal Propellers Caused by Engine Impulses and Vibration, Preliminary Study of_ _________ 618
Films, Catalog ___________________________________________________ _______________________ __ 119, 469
Finder, Direction, Type SCR- 142__ _ ___ _ _ _ _ _ _ _ _ __ _ _ __ __ _ _ _ _ _ _ _ _ _ 238
Fins, Wind Tunnel Tests of DH- 4B Model Fitted with Various Fins and Rudders___________________ 603
Fire Hazard Tests of Ignition Equipment_________________________ _____ ___________ ______________ 596
Fire Prevention, Aircraft__ _____________________________ _____ __________ ___ ____ ________ ________ _ 592
Fittings_______ _____________________ _________ ________________________________________________ 387
Flaps, Resume of Investigation Made on Handley Page Slots and Flaps _______ _ ,_________________ ___ 639
Flare, Modified Mark I_ ___ __ ___ ______ __ __ ____ _______ ________________________________________ _ 392
Flight Test Data, Determination of Stability from______ _____ __ ____________ _____ ____ __ _________ __ 625
Flood Light:
A-1, Handbook of Instructions for_______________________ __ ___ _______ _______ _______________ 583
A-2 and A-3, Handbook of Instructions for Airdrome___________ ___ __________________________ 601
A-4, Handbook of Instructions for Airdrome Landing Field ______ _______ __ ____________________ 606
Comparative Test____ _____________________________ ___ ____________ __ ___________ ___________ 571
Test at Fairfield Air Depot_ __ ________________ ___ __ _________ ____ ___________________________ 623
Fog, Test of Sample of Crystal-On __ --------_________ ____ ____________ _____ __________________ ___ 182
Fokker. See "Airplane."
15
F orce d. L- an d.m gs. S ee "E. -mergency L an di ngs. " CInirfcourmlaar tNioon.
Foreign Aeronautical Engines, A Metallurgical Report________________________________ ____________ 222
Form, Official Airplane Report Form___ ___ __ ___________ ____________________ ___ ________________ _ 97
Formation Flying_ ___ ____________________________ ______ ____ __________________________________ 73
Formulas:
Additional F ormulae for Seams Subjected to Axial and Lateral Loads____________________ ___ ____ 665
Comparison of Column_____ _____ _______________ ____ _____ ____ __________________________ ___ 395
Miscellaneous Collected Airplane Structural Design Data Formulas and Methods________________ 644
Precise for Restrained Beam with Axial Load of Compression, Equal End Moments, and Two
Symmetrically Placed Side Loads______ _______________________ ___ ___ ___ ___ _____ __________ 591
Precise Formulas for Restrained Beam with Axial Load of Compression, and with One Restraining
Th1oment ICnown_ _______________________________________________ _____ __ ________________ 624
Foster, Foster Modification on Liberty-Delco Switch Assembly____________ ___ ____ ___ ______________ 66
France, Report of General Mitchell's Inspection Trip_____ ____ ___ ______________________ __ _______ __ 391
Freezing Points, Tables Showing the Freezing Points and Specific Gravity of Alcohol-Water Mixtures ___ 178
Fuel:
Clogging of Fuel Strainers_________________ __________________ _______________ _______ ___ ___ __ 542
Investigation of the Effect of Doped Fuel on Fuel System ______________________ __ __ ___ ______ 308, 383
Test to Determine Minimum Fuel Head to Operate Liberty " 12 " Engine on Propeller Load______ 422
Fuel Consumption:
Characteristics of the Stromberg Type NA- D6 Carburetor on 300 H.P. Hispano-Suiza Engine____ 309
Curves for Estimating Fuel Consumption on the Basis of Piston Displacement and Revolutions per
Minute ____ ___ ___________________________ ___________ ____ __ ____ ___ _____ ___ ______ __ ___ ___ 375
DH-4B with Liberty 12-A and Form " D " Supercharger___ __ ________ _______________________ __ 398
Effect of Fuel Head at Carburetor on Brake Horse Power and Brake Specific Fuel Consumption___ 336
Method of Estimating Power and Fuel Consumption at Various Altitudes __ _____________ ·__ ___ ___ 317
Test of t he DH-4 _____ . ____________________________ ___________________________________ 3'46, 461
Fuelizer, Test of Packard Fuelizer in Liberty "12"-- - ------------------------------------ -- ---- -- 134
Fuselage:
DH-4______________________________ ____________________________________________________ 34
Longitudinal and Tranverse Shearing Stress in a Monocoque Fuselage of Constant or Variable
Cross-Section ____________ __ ____________________________________________________________ 675
NBS-3, G. Elias, Torsional Test___________________________________________________________ 517
NBS-4, Curtiss, Torsional Test__ ____________________________________ ___________ ____ ___ ___ _ 513
XB- 1-A; Static Test_ _____________ _______________________________________________________ 338
Wind Tunnel T est 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
Aviation_______ __ ___ ______________________________________________________________ ___ ___ 660
Comparative Test of Homogenous Gasoline and Commercial Aeronautic Gasoline_ _______________ 35
Determinat ion of Water in Gasoline______ __________________________________________________ 320
Liberty " 12 " and Wright -Hispano 300 H . P . Operation on Automobile Gasoline __________ _______ 227
Low Test Gasoline Specifications___________________________________________ ____ ____ ________ 165
Specifications and Methods of Testing _______ ____ ___________________________________ _____ ___ 46
Test of Hose Connections____ _____ _____________ ________________________ _______________ ____ 13
Use of Commercial Low-Test Automobile Gasoline in Aviation Engines_________________________ 216
Gauge Set, The McCollum-Peters Six Element Telemeter Strain Gauge Set ___ ____ ._____________ _____ 657
Gear Fuel Pumps, Engine Driven, T ype "C"---------------------------------------------------- 464
Geared A via t i on Engines, Performance and Design___ ___ ____________ ______________ _______________ 143
Gears, Comparative Mathematical Analysis of Cam-shaft Drive Gears of the Liberty "12" and the
Packard "2025"- ------------------------- - - - ------------------------- - --------- ----------- 423
Generator, Airfan Type FA- 9_ _ _ _ __ _ _ _ _ _ _ _ _ _ ___ _ _ _ _ _ _ _ _ _ __ _ _ _ 62
Generator Cut-out, Delco Automatic 50chour Endurance T est _________________ _____ ~ ------ - ------- 282
Generator Cut-out, Delco Automatic Generator Cut-out- ---------------- ~ ----------------------- - 151
124501-32--3
16
Information
Circular No.
Generators, Power Required to Drive Magnet os and Generators _ _ ____ _________ ___ ___ c _ _ __ _ _ _ _ _ _ ___ 42
Generators, Radio Generator Airfa n H ead R esistance Measurement_ ___ ____ _____ ______ ____ _ -------- 63
Germany, Report of General Mitchell's Inspection Trip_ __________ ____ ____ ___ ___ ____ ___ ___ ___ _____ 391
Gliders _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 444
Gliders, Static Test and Determination of Elastic Axis of the (Materiel Division) Improved Stressed
Skin T ype Glider Wing_ __ ________ __ ___ _______________ ______ __ ____ ____ ___ __ ___ ___ _____ __ ____ 646
Goggles, T est of Sample of Crystal-On__ ______________ _______ ___ ____ ____________ ________ ____ __ __ 182
Goggles, Vacuum N onfrosting _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 258
Goodyea r, T est of Thick-walle d Leak Proof Tanks _- ------- - ------ - -- - - -- - - ------- -- ------ - ------ 136
Gottingen. S ee " Airfoil."
Gravity, Det ermination of the Center of Gravity and Mean Aerodynamical Chortl e ________ ____ _____ _ . 605
Guide, R eport of Control Cable Guide Running Test_ _______ ____ __ ___ ___ _____ __________________ _ 95, llO
H
Hall-Scott. S ee " Engine."
Hanga r, P erformance of Tent Hangar Manufactured by Baker & Lockwood_____ ___________ _____ ___ _ 187
Hangar, Performance of Test H angar Manufactured by Missouri Tent & Awning Co_ _______________ _ 188
Hart. S ee " Propeller."
Hartmann & Braun, Laboratory Test on Electric Thermometer____ ____ __ ______ __________________ __ 277
H ead, Effect of Fuel Head at Carburetor on Brake Horsepower and Brake Specific Fuel Consump tion __ 336
Heat Treating, Bath Composed of Sodium Chloride, Sodium Carbonate, and Sodium Cya n ide____ ___ __ 363
H eat Treatment of Sand Cast Duralumin ________ __ __ ______ __ ______ ___ __ ___ ~- _ _ __ __ _ _ _ _ _ _ _ _ _ _ _ _ _ 408
H eater , Test of Engine Heater_ __________________ __ _____________ ____ ___ ______ ___________ ____ ___ 232
Hercules, St andard Test of Hercules Spark Plugs_________ _____ ___ ________ ____ ____ _____ __________ _ 116
Hispano-Suiza. See " Engine."
History, Tactical History of Corps Observation, Air Service, A. E . F _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 75
Holland, Report of Gener al Mitchell's Inspection Trip__ ___ ________ ___ __ __ ___ _________________ __ __ 391
Horsepower:
See " Engine."
Method of Computing Horsepower Available from Engine with Two-bladed Wood Propeller_ ______ 505
Variations of Hors_epower with Altitude______ __ __ _____ _______________ _____ ______ ____ ________ 92
Hose Connections, Test_ __________________________________ ________ _______ ________ _____ ____ ____ 13
Huff-Daland. S ee "Airplane."
Hyde, Adapta bility 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 Bij ur Ignition End Starter for Airpla ne Engines __ ________ ____ ___ _____ _______ __ __ 357
Compa rative 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 of___ ___ ______ _____ __ ___ _____ ____ ____ __ _____ ____ ____ ____ __ __ 596
Recent Developments in_ ________ ____ __ ____ ___ ____ _________ ________ _______ __ ________ ____ __ 611
Standard Test of Hercules Spark Plugs__ ___ ___ __________ ____ ____ ______ ___ ________ ____ ____ __ l16
Test of Kellogg 600 Watt Reverse-Current Relay __ __ ____ ____ __ ______ ________ __ ____ _______ __ __ 189
Index:
Air Service Information Circular Nos. 1- 565, Inclusive___________ ________ ___ _______ ___ _______ 565
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, January, 1918- June, 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, Cha nges in ________ __________ _______ ______ __ __ ________ 273
Injector, Flight Test of Anti-Knock Injector --- - - - - --- - ---- -- - -- ------- ------- --- - - --- -- - - -- - - - 372
Insignia , Comparative Merits of Various Insignia __________________________ ___ ___ _____ ______ ______ 98
Inspection, Report of General Mitchell's Insp ection Trip ____ __________________ __ _______ ___ ____ ____ 391
Instruments, Performance of Airsp eed Tubes E xp osed to Rain Drops and Freezing Rain __ _______ _____ 549
Instruments, Testing of Airplane Tachometers ____ ----- -------- - ------------- ------- --- ------- - -- 61
Intake, Air, Outside and Inside, Compa rative Eff Pct on Engine Operation ____ ___ ______ ______ ____ _____ 289
11
Information
Circular No.
Intake Bell, Experiments on the Design of, for a Wind Tunnel_______________ ___ ________________ ___ 217
International Aerial Regulations _________________________ ______________ :____ ___________________ 566
Interphone, SCR-57, Remodeled ______________________________________________________ _:______ 129, 204
Interphone, Spalding Voice Tube Interphone __________________________________________ M _ _ _ _ _ _ _ _ _ 108
faotta-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__ ______ ______________ ______ _______________ ______________ __ 569
Junker. See "Airplane."
K
Kellogg, Test of Kellogg 600-Watt Reverse Current Relay _____ __________________ _____ ____________ 189
Kerber-Boulton, Static Test of Experimental Spar _ ______________________________ .________________ 557
L
Laboratory, Medical, Report of the Medical Research Laboratory and School for Flight Surgeons for the
Calendar Year 1920 __ __________ ___ ____ ___ ________________ __ ________ __ __________________ ___ _
Laboratory Standard Test Methods and Computation, Power PlanL- --- - --------- --- ------------~­Laddon.
See "Airplane."
Landing, Emergency Landings from Low Altitudes __ ______________________________________ ___ ___ _
Landing Facilities and Airways ____________________ -·-- ___________________ ___________________ __ _
Landing Field Flood Light:
A-1, Handbook of Instructions for_ _____ ___________ __ _______ __ ____ ______________________ __ _
.A-2 and A-3, Handbook of Instructions for Airdrome _____ ________________________ __ ________ _
A-4, Handbook of Instructions for _______________________________________________________ _ Landing Fields :
231
586
366
404
583
601
606
First Transcontinental Reliability and Endurance Test_________ ____ ____________ _________ _____ 2
Meterorology and Aeronautics_____________________________________________________________ 77
Rules _________________________________________________________ --- ------------ ___________ 81, 84
I.anding Gears, Determination of Stresses in Landing Gears and Design of Shock Absorbing Units_____ 602
Landing Lignts, Carbic, Night_______ ____ __ ______ _________ __ ________________ _____ ______________ 253
Lantern Slides, Catalogue ____________________________ ____ _______________ _____ ________ ______ 119, 469
Lawrance. See "Engine."
Le Pere. See "Airplane."
Least Work Method to the Evaluation of Initial and Temperature Stresses, Application of the ________ _
Legal Questions Affecting Federal Control of the Air_ __________ ___ ________________ _________ ___ __ _
Liaison, Air Service Liaison Regulations __________________________________________ ______________ _
Liberty Engine. See "Engine."
Liberty Storage Battery Endurance Test __ ________ _____ ______________ _______ ____ _______________ _
Lights, Carbic, Test of Night Landing Lights _________ ___ ___ _________________________ _____ ___ : __ _
Load:
634
181
89, 90
301
253
Circular Ring with Concentrated Loads ___ ____ ~--------------------------------------------- 673
Distribution among the Spars in Multi-Spar Construction of Airplane Wings___________ __________ 394
Precise Formulas for Restrained Beam with Axial Load of Compression, and with One Restraining
Moment Known_______________________________________________________ ___ _____________ 624
Proposed Method of Determining Design Tail Loads for Airplanes_____________ _______ ___ ______ 650
Structural Members under Combined Axial and Transverse Loads__ ___________ __ ____________ ___ 493
Study of S. T. as Formula for Load Factors ____ __________________________ ·___________________ 498
Load Factors, Effect of Variation in Load Factors on Structural Weight of Wings____________________ 318
Loading, Best Wing Loading for Single-Seater Pursuit Airplane_____ _____ __________________________ 315
Loading, Critical Loading of Structural Members Subjected to Combined Axial and Transverse Loads __ 581
Loading, Test of Armstrong-Whitworth Steel Spars Under Combined Axial and Transverse Loading__ __ 656
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."
Longitudinal and Transverse Shearing Stress in a Beam of Constant or Variable Cross-Section_________ 674
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."
18
M
MB-6. See "Airplanes." Information
Machine Gun: Circular No.
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 G-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
Mail, DH- 4M2. See "Airplane."
Manganese Bronze Castings, Methods of Making_ _ _ _ _ 27 5
Manganese Bronze, Physical Properties__________ ____ ______ ______ ________ _____ ______ ____ _____ ___ 371
Manual, Air Service___ __________ ________________ __ __ ___ _______ __ ___ _______ ______ ____ ___ _______ 84
Manual, Corps Air Service, Field___ ___ _________ ________ _________ ___________ ___ __ ___ ____ __ __ __ __ 74
Mapping, Use of Aerial Photographs in Topographic_ _____ __ ________ ____ ______ ____ ____ ______ __ ____ 184
Marlin-Test of Model 1916 after Changes Were Made in Top Lock Container to Accommodate Single-
Shot Mechanism_ __ __________________ ________ _____ _______ __ ___ _____ ___ ___ ___ _____ __ __ __ ____ 59
Martin. S ee "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 Information Circular, Air Medical Service_ __ ___ ____ _____ ___ __ ________ 563
Medical Research Laboratory and School for Flight Surgeons for the Calendar Year 1920, Report_ _____ 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 Reliability 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. S ee "Spark Plugs."
Micarta, Destructive Whirling Test of "Micarta" Propeller_ ______ ____ _________ ________ ______ - _ 8
Micarta Liberty Propeller, Destructive Whirling Test___ __ _______ ________ ____ ____ ______ ___________ 12
Miller Rubber Co., Test of Five Thick-Walled Leakproof Tanks __________ _____ _____ _____ ___ ____ :__ 114
Millivolt-Temperature Relation of the Standard Air Corps Iron-Constantin Thermocouple_____ ____ ___ 654
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 Carburetors_ ______ _______ __ __ ____ __ 175
Instructions to Pilots___ ____ ____ __ ___ __ _____ _____ _______ ____ ____ ___ __ __ ___ __ ____ ___ _______ 257
Test of Back Suction and Air-Bleed Type Mixture Controls in Flight ___ ___ _____ _____ _______ __ __ 368
Morane-Saulnier. See "Airplane."
Monel-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," Report of Test of Cannon Ring Mount_________________ ____ __ ____ ____ _________ 283
NA- D6. S ee " Stromberg."
NA- L5. See " Stromberg."
NBS-1. See "Airplane."
N
Nacelles, Wing Tunnel Test of Venturi Type Cowls and Engine Nacelles Suitable for Multi-engine Air-planes___________________
_______ ___________ ___ ____ ___________ ____ ___ _____ ____ _________ ___ _ 647
Napier. See "Engine."
19
. . 'Information
Nav1gat10n : Circular No.
Air Service Manual_ __ _________________________________________________________ ----.-_____ _ 84
First Transcontinental Reliability and Endurance T est____ ___ ___ __________ ___________________ 2
Instructions, 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
Nomographic Column Charts ___ ___ __ __ ____ ___ ___ __ __ __________________ ______ __ ______ ________ 304, 446
Nomographic Column Charts with I sobars of Weight aBd Tensile Strength__ ___ _____________ ___ __ ___ 631
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
Odier Portable Engine Starter, Test __ ___ ~- - --------- - ----- ------- --- - - --------------------- - --- 190
Officers, Reserve Officers, April 15, 1920_______________ ____________________________________ __ ____ 69
Oil, Aviatiop Engine_______________ __ ___________ ______________________________________________ 661
Oils, Relation of Laboratory Tests and Cold-Weather Motor Operation of Various Oils, Pt. 2__________ 640
Oils, Specifications and Method for Testing Lubricating Oils ___ ______ ____ _______ __ __ -- ________ _ - - ~- 118
Oleo Strut with Compensating Valve, D ynamic Test of Long Stroke___ ______ ___ _____ ___ ___ __ __ _____ 658
Operations, Notes on Recent _____ ____ _______________ __ ___ - - -------__________ _____________ ____ _ 76
Operations Officers, Regulations for Corps Air Service - - --- - - --- - - - - -- -- -------- -- - ----------- - --- 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 oL ____ ____ ___ _______ _____________ ______ _______ _____ __ · _ - - _ 543
Oxygen, Use of Gaseous and Liquid___ ____ ____ ____ ___ _________________ __ _______________________ 667
Oxygen Gas Apparatus, Description and Adjustment of Prouty_______ ______ __ _____ ________________ 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."
Parachute:
p
Cloth, Physical Characteristics under Varying Atmospheric Conditions___________ ________ _____ _ 651
Test of Model 300-D-1 Parachute ___ ____ ___________ - - __ _ _ __ ____ __ __ _ ___ __ __ _ _ _ _ _ _ _ _ _ _ _ 15
Weight, Determination of the Rate of Descent of a Falling Man and of a Parachute__ _______ _____ 628
Performance :
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
Piston Rings, Test of Standard Water-Cooled Liberty-12 Engine with Various Piston Rings and Arrange-ments
____ ___ ___ ______ ________ ____________ _____ ________ _______ __ ________________________ __ 638
Plating, Cadmium Plating by Me~ns of Udylite Process ___________________________________ __ ______ 545
20
Information
Plywood: , Circular No.
D esign of Plywood Webs for Box Beams_________________ _____ ___ ___ ________ _______________ _ 516
Truss Ribs ________________ _____ ____ ___ ____ __ _________ _ ~ ---- __ ____ ____ ____ ._____ ____ ______ 268
Use of Balsa Wood in Plywood _________ _____ ___ _ ------- - -- ________ ___ ----_ - ___ __ __ __ - - - - - - 473
Web Spars________________________ _____ ______ ___________ __ ______________ _____ ___________ 313
Webs of Box Beams, Shear Strength of____ ___ _____ ______ ___________________ ___ _______ ___ ___ 587
Pomilio. S ee "Airplane."
Power, Method of Estimating Power and Fuel Consumption at Various Altitudes__ ___ ____ ___ __ _____ _ 317
Power Plant Laboratory St andard Test Methods and Computation_ ___ ___ ___ ____ ___ ___________ _____ 589
Power, Required to Drive Aeronautic Engine Magnetos and Generators __ __ ___ ______ ______ _____ _____ 42
Preignition, Effect of Reduced Engine Compression Pressure on Preignition with Mica Plugs __ ___ - -'---- 20
Pressure Distribution Data, Stμdy oL _ _ __ __ _ ____ ___ _ __ _ _ __ __ __ _ _ ___ _ _ _ __ _ __ _ _ ___ _ _ ______ _ __ _ _ __ 604
Prestone, Cooling, The Mechanical Difficulties of Prestone Cooling at 300° F. Outlet Temperature___ __ 670
Progress R eport on the Study of Torsion on Wing Framework___ __ ______ __________ ______ ___ __ _____ 584
Projector, P y rotechnic Projector and Ammunition Test _____ ____ ___ ___ ____ ___________ ______ __ - - - _ 389
Propeller:
Aeromarine, Destructive Whirling Test_____ _____ __________ _____ _________ ____ __________ _ ____ 137
Comparison of Flight Test of a Number of Wood Propellers with Wind T unnel Tests on a Series of
Wood Propeller Models______ ____ ________ _____ ___ ________ ___________ ___ ___ ___ ______ __ ___ 595
Comparison of Wind
0
Tunnel Tests with Flight Test of a Number of Detachable Blade Propellers
Made from the same Plan Form - --- ---- - - - --------- - --------- - ------------------ - --~---- 632
Design, Section Properties of a series of Aerofoils Suitable for_ _________ __ __________ _____ ______ _ 597
Destructive Whirling Test of "Micarta" Propeller (Westinghouse) and Rubber-Covered Propell ers
with Hard and Soft Rubber Leading Edges (Brunswick-Balke-Collender Co.)_ ___ ______ __ ______ 8
Hart, 1920 Model, Manual and Parts List_____ ______ ________________ ___ ___ __________ __ ______ 239
Hart, Whirling Test of Adjustable Propeller_ ________ ______________ ________________ ______ - _ _ _ 11
Instructions for Assembly of Detachable Blade Propellers_ __________________ _________ ____ _____ 648
Metal Tipping of Aircraft Propellers _______ ____ __ ______ _ _____ ________ _______ _____ ___ __ __ - -- _ 246
Method Used by the Engineering Division for Computing the Horsepower Available from an Engine
with a Two-Bladed Propeller _______________ ____ ___________________ ____ _______ ___ __ ___ - _ _ 505
Micarta, Destructive Whirling T est_ ____ ___ ____ ___ _________ _____ _______ ____ -- ----- ____ __ - - _ 12
Preliminary Study of F atigue of Metal Propellers Caused by Engine Impulses and Vibrations_____ 618
Section Prop erties of a Series of Airfoils Suitable for Propeller Design__________ _____ ________ __ __ 597
Shift of the An gle of No-Lift on Propeller Aerofoils __ __ __ ______ _______________ __ _______ __ ____ _ 14 7
Test t o D etermine Minimum Fuel Head to Operate Liberty "12" Engine on Propeller Load_ __ ___ 422
X-14849, Investigation of Steel Propeller___ _______ __ ______ _____ ___ __ ______________ __ ________ 145
Properties of Wood at 10 P er 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 P ursuit Airplanes_________________________ ______ _____ 436
Pilots, Notes for Pursuit Pilots____________________ __ ___________________ ______ __ ____ _______ 87 ·
Regulations, Pursuit and Combat Flying Training Regulations, Provisional______ ______ ____ ____ __ 83
Pyrotechnic, Projector, and Ammunition Test.__ __________________________ ______ ___ ________ _____ _ 389
Pyroxylin, Finishes for Aircraft ______ __ __________ _____ ----- - -- -- - - _____ ____ ____ _______ ______ ___ .56l
R
Radial Engine, Comparison of Piston Side Thrusts in the Modified R-1 400 H. P. Radial Engine and
the Single-Cylinder Test Engine ___ _________________ _______ .__ __________ __ ___ __ ___ ____________ 525
Radio:
Airfan Type F A- 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
1
Direction Finder:----"--- ____ ---- __ ____________ ______ ~- - _________ __ -----________ 23&
21
Radio- Continued. af{g~~t~~-
Short Wave Radio Telephone Set_____ _______________________ _______ __ __________ ______ ___ __ 30
Treatise for Radio Mechanics_ ____________ ___ __ __________ __________ ________________________ 229
~ , Transcontinental Reliability T est___ ___ __ __ ____ ____ _________ __ ___ ___ ____ ___ ___ _________ ___ _ 2
Radiator:
DH- 4, Tests of, to Determine Best Location for Speed ___________ __ ___________ : ____ __ ___ _____ 528
Fokker C0-4, P erformance Test of, with Side Radiators__ ______ ______________ _____ _____ ______ 456
Fokker C0-4, T est oL _ _ _ __ ___ _ __ _ _ __ _ _ __ _ _ __ __ _ __ __ _ ___ _ _ _ _____ _ ____ _ 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 Suction in Exhaust Stubs_ __ _____ _____ 179
Rate-of-Climb Indicators, Description and Theory_____ ____ ___ _______ ___ _________________________ 31
Rausie. See " 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 (Provisional) _____ __________ __ -- _ _ _ _ _ _ _ 81
Pursuit and Combat Flying Training Regulations________ ________________ ____________________ 83
Relay, Test of Kellogg 600-Watt Reverse Current RelaY - ------ - ----- --- - ----------------- --- ----- 189
Report:
Final Report of Chief of Air Service A. E . F . to the Commander in Chief A. E. F_______ _______ __ 180
First Transcontinental Reliability 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
Ring, Circular Ring with Concentrated Loads ___ ___________ _________ _____ __ ____ --------------___ 673
Roland. See " Airplane."
Rubber, Storage and Preservation of Rubber Goods, Tires, and Tubes_________________ _______ ______ 48
Rudders, Study of Balanced ____ ______ ____ ___ ____ ___ ___ _____ _____ _____ ____ _______ __ _ ------ _____ 586
Rudders, Wind Tunnel Tests of DH-4B Model Fitted with Various Fins and Rudders_ ____ _____ ______ 603
S-6. See "Airplanes."
SCR. See "Radio."
SE-5. See ''Airplanes."
SL-6. See "Airplanes."
s
Seams, Additional Formulae for Seams Subjected to Axial and Lateral Loads ____________ ·--- --- ----- 665
Section Properties of a Series of Airfoils Suitable for Propeller Design ___ - _ - _ - ___ - - - - - _ - - - - - - - - - - -_ - - 597
Sediment Deposits in Carburetors ____________ ___ ___ ______ - - -- - _ - ---- ------ _ - - - -- - -- --- - - - - - - -- - 390
Selection, Observation, and Assignment_ ______ ___ _____ __ __ _________ _______ ________ ___ - - - __ -- __ -- 120
Shackle, Modified Weed Shackle for Bomb Racks _____________ -------- --- - -- __ - - -- - -- - - - - - - - --- - - 305
Shear Strength of Plywood Webs of Box Beams______ ____________________________________________ 587
Shock Absorber, Dynamic Test of Gruss Model X-58 ________ __ ____ ____________ - --- -- - - - - -- - - _ _ 671
Shock Absorber, Dynamic Tests of Keystone B-3A Bomber Oleo_______ __ _________ ______________ __ 666
Shock Absorber Cord, Tests on Shock Absorber Cord__ ___________________________ ________________ 121
Shock Absorbing Units, Determination of Stresses in Landing Gears and Design of._ - - _ - - - - - - - - - - - - - - 602
Shock Absorbing Wheels, J. V. Martin Static Test___ __ _______ ________________ _________ __ __ _____ _ 254
Silhouettes of Airplanes __________ __ ______________________ --- ----- __ ----- __ -- - _ - -- - ----- - - -- - - - 585
Silicon, Copper-Silicon-Aluminum Alloys with and without Manganese__ _____ ________ ____ ________ ___ 385
Ski, Airplane, Static Test Report of Type E-1------ -- ------------------------------ --------- - -- - 636
Ski, SE-5, Static Test_ _________________________ _______ ___________________ - _ - - - _ - - - - - - - - - - - - - - 322
Slides, Catalogue of Lantern Slides __ __________________________________ -~ __ - - - - - - - - - - - - - - - - - - - 119, 469
Slots, Resume of Investigations Made on Handley Page Slots and Flaps ______ - - - - - - - - - - - - - - - - - - - - - - 639
Smith Cylinder Unit, Performance Test___ _____ ____ ___________________ ___ _________________ __ ____ 218
Solder for Aluminum------- --- --- ~ - - ------ - -- ----·----- - - -- --- ------------- ----- --- --- ------- 298
22
Information
Circular No.
Solder, Investigation of Silver Solder_ _ _ _ _ _ _ _ _ _ _ 26
Spad. See " Airplane." "
Spar:
Design of Plywood Webs for Box Beams _____ ___ ______________ ______ ________ - __________ - _ 516
Design of Trussed Metal Spars for Single Bay Airplane________________________ _________ ____ __ 621
Effect of Eccentricities on Stresses in Airplane Spars _________________ _____ ____ ____________ ___ _ 438
- Experimental 15-inch Metal Spars and 11-foot Chord Metal Wing Ribs, Tests on__________ ______ 556
Experimental MetaL ____ _____ ________ ___ • _ _ _ 590
Load Distribution among the Spars in Multi-SpaT Construction of Airplane Wings_______________ 394
Reinforced Ply-Wood Web Spars_ __________________________________________________________ 313
Static Test of Aero marine Duralumin Spar_ ______ _________ _____________ ___ ______ _ -~_________ 524
Static Test of Engineering Division Experimental Steel Spar_ ____________ ____ _________________ ·_ 519
Static Test of Kerber-Boulton Experimental Spar__ ___ __ ______ _____ __________ ______ ___ _______ 557
Supplementary Report on Tests of 6}{-Inch Metal Spars__ ____________________________________ 637
Test of Armstrong-Whitworth Steel Spars Under Combined Axial and Transverse Loading__ ______ 656
Tests on 6}{-Inch Metal Spars___ _____ _______ _________ _____ _____________ ___________________ 622
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 Test (and Supplement) ___ ________ _______ ____ ~--______________________ 273
Standard Test oJ Hercules Spark Plugs ____________________________ ___ _____ ________ ________ _ 116
Speaking Tube_ ___ ____________________________ __ ___________________________ __ _____ ___________ 67
Specification, Method and Specification for Testing Lubricating Oil_ ________ _____ _________ ______ ____ ll8
Specification, Low-Test Gasoline ___ __ :: __ _______________________ __ ______________________________ 165
Speed, Bamburg Speed-Measuring Station ____ ___________________________________________________ 397
Spinning, Characteristics, Airplane_ _______ ______ __________ ___ _______________________________ ___ 613
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, Determination of Stability from Flight Test Stick Force Data_________________________ __ _ 625
Stability, Longitudinal Stability of Airplanes ___ _________ ______ ____________________ ----___ _______ 548
Stability, Study of Controllability, Angular Velocity, 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
Bijur, Test of Bijur Ignition End Starter_____ __ ____________ ___ _______ _____ _____________ _____ 357
Lucas, Test_____ _______________ ____ ______ __ _____________ _____ ____ __________________ ___ __ 168
Odier, Test---- --- --- - --------- -- --------------------------- - ---- - ---- - -------- -- ----- - -- 190
Starting Device, 50-hour Endurance Flight Test (Buzzer Starter)___________ _____________ ____ ______ 302
Starting Switches, Tests of Magnetically Operated Starting Switches__ ___ ________ ___ ____ ______ _____ 214
Static Testing, 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, Interior Corrosion and Its Prevention_ __ ____ ________ ___ _________ _____ ___ __ ___ ____ ___ 374
Steel Tubing:
Effect of the Ratio of Diameter to Gage Thickness upon the Torsional Strength___ ___ ____ _______ 263
Steel Tubing and Wing Beams Taken from the Fokker D-VII, Test on____ ______ ___________ ____ 104
Thin-Wailed Seamless, Round and Streamline_ _ _ _ _ _ _ 24 7
Stick Force Data, Determination of Stability from Flight Test__ _______ ________________ ____________ 625
23
Information
Storage: Circular No.
Airplanes, Engines, Their Parts and Accessories __________________ __ ___________ ____ __________ _ 256
Liberty Storage Battery Endurance Test________ ________________ _____ __ ____ _________________ 301
Preparations for A via ti on Engine Storage________ ______ ________________ __ ___________________ 451
Storage and Preservation of Rubber Goods, Tires, and Tubes ___________________ _______ ________ 48
Strainer, Clogging of Fuel Strainers _______________________________________ --- _ _ _ _ _ 542
Strength, Column, Crushing, and Torsional Strength of Duralumin Tubing____ __________ _____ ____ ___ 470
Strength, Crushing Strength of Spruce at Varying Angles of Grain__________ __ ______ ___ ________ ____ 259
Stress Analysis:
"Alouette" Airplane _______ -----_-----------_ --- ____ ---- - - - ---- - -- ___ - _ ------ - ___ ---- _ _ _ 520
Application of the Method of Least Work to Redundant Structures____________________________ 495
Charts for the Solution of Stresses in Airplane Wing Beams______________________ __ ________ ___ 555
Deflection of Beams of Nonuniform Section_________ __ ______ ________________________________ 213
Design of Plywood Webs for Box Beams__ ______ ____ ____________ ______________ __________ ____ 516
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_____ ____ ________________ _ _ _ _ _ _ _ _ _ 52
Wings, Stress Analysis and Design of, for PW- 2 Night Pursuit________ ______________ ___ _______ 150
Stresses:
The Allowable Stress in Tubes Subjected to Torsion__________________________________________ 641
Application of the Least Work Method to the Evaluation of Initial and Temperature Stresses______ 634
Determination of Stresses in Landing Gears and Design of Shock Absorbing Units________________ 602
Effect of Eccentricities in Airplane Spars_ __ ___________ __ ____________________________________ 438
Revised Nomographic Column Charts with Isobars of Weight and Tensile Strength______________ 631
Stromberg Carburetor:
NA-D6, Test to Improve Fuel Consumption on the 300 H.P. Hispano-Suiza Engine___ ___ ___ ____ 309
NA-L5, Development of Stromberg, Inverted Type Model_ ____________________ -_______________ 442
NA-L5, Instructions for Stromberg NA-L5 Double Venturi Inverted Type______________________ 314
NA-L5, Test of, on the Liberty "12" Engine____________________________________ __ __________ 158
NA-Y5D, Development and Test of Stromberg, for Curtiss D-12 Engine_____ ____ ______________ 572
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__________________________________________________________ 395
Dynamic Test of Long Stroke Olea Strut with Compensating Valve ____________________________ . 658
K Bar, Physical Tests on Struts from JV-Martin Airplane__ __ ______________________________ ___ 101
Reserve Bending St rength of Struts ______ _______ __ _______ ____________________________ .. _ 353
Strength of Bent Struts_________ ______ ____________________ ___ __________________________ ___ 580
Structural Design of Cabane Struts for the PW-1 with R. A. F. 15 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_________ __ _____________________________ 195
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."
1245()1-32---4
T
24
Information
Tachometer: Circular No.
Airplane____________________ ______________________ ________ ___ __________________ ___ ______ 60
Test of Weston Model 44 Electrical__________________ _____ ________________________________ _ 316
Testing_________________________ __ ___ ____ _______ ____________ _____ ________ _______________ 61
Tactical History of Corps Observation , Air Service, A. E. F- ---------- - - --- --------------·--------- 75
Tactical Manual of Aerial Bombardment ______ _____________________________ -- _ _ __ _ ___ _ _ _ _ 140
Tactics, Aerial, Observation, Bombardment, Pursuit-Combat_ _______ -- ____ -- --- - _ ____ _ _ ___ __ 88
Tactics, Air ____________ ·· - _____ ________ ___ ---- -- ____ __ -- - - -- - - --- - ---- - - - - -- - -- -- - -- - - - - -- - - - 73
Tail Loads, Proposed Method of Determining Design Tail Loads for Airplanes_ ______________________ 650
Tail Plane, Method for Determining the Angular Setting_____________________________ _____________ 102
Tail Skid, Impact Test of JN-4, Tail Skid and Landing Chassis ____ ___ .. _______________________ ___ __ 409
Tail flurface:
Static Test on DH-4 (Dayton-Wright) ____________ _______ __ __ _____ - ---- - - - ---- - - -- - - -- - - - - - 23
Study of Horizontal Tail Surfaces of Consolidated XPT-3 (NY-1)__________ ______ _____________ 615
Wind Tunnel Test for Elevator Hinge Moment Coefficients on the Horizontal Tail Surface No. 5
with 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 Bulletin:
No. 28-- ------- - ---------- ------------- ------- -- - -- ---- --- --- ---- ---- -------- ----- --- --- 378
No. 29- -------- -- ------------------------- - ------------- --- -- -- -- -- ---- -- -- ----------- -- 379
No. 30-------- - ---------- ------ - - - --- ---- -- - -- - ----- - --- ---------- - - -- - ------ - ------ -- -- 380
No. 31 ---------------------- -- ------------ - --------------- - ---- - -- ---- --- - ------------ _ 381
No. 32------ -- - - - ----- - --- - ---------------------- -- ---------- -------- - ------- ------- ---- 425
NNoo.. 3334 -_-_-_-_-_-__-_-_-_-_-_-_--__-_--_-_-_-_-_-__-_-_-_-_-_-_-_-_-_-_-_-_- -.. -_-_ _-_- -_-_ -__- -__- -_ _-_- -_-_-_ _- -_-_ -_ -_ -__- -_-_- -_ -_-_ -_ -__-_- -_-_ -_ -_- _- -__- -_-_ -_ -_ -_ 442267
No. 35------------------ ---- - ----- ----- -------- ------------ - --------------- - - ----------- 428
No. 36-- ------------------------ ---