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Aeronautics National Advisory for Committee

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Aeronautics National Advisory for Committee AERONAUTICS SEVENTEENTH ANNUAL REPORT OF THE NATIONALADVISORY COMMITTEE FOR AERONAUTICS 1931 INCLUDING TECHNICAL REPORTS ~OS. 365 to 400 lJNI.~ STATES GOVERNMENTPRIN~G OFFIOE WASHINGTON: 1S82 Forde bytheSuperintendentof Documents,Waehlugton.D.C.---------- . Pricewxl(-sw2kram) LETTER OF SUBMITTAL .— To the Congress of the United Stutes: In compliance with the provisions of the act of March 3, 1915, establishing the National Advieory Committee for Aeronautics, I submit herewith the seventeenth annual report of the committee for the fiscal year ended June 30, 1931. It is noted from the committee’s report that the progress in aerodynamic development has been gratifying and that with recent notable additions to equipment the committee now has excellent facilities for the conduct of fuH-scale research on airphmes, propellers, and seaphme floats and hulls. Attention is invited to Part TTof the report presenting a summary of progress in the technical development of aircraft. With the steady improvement in the performance of aircraft, the relative importance of aviation increases as an agency of transportation and of natiomd defense. I cmcur in the committee’s opinion that the continuous prosecution of scientific research will provide the best assurance of further progress in the develop- ment of aircraft for aUpurposes. HERBERTHOOVER. THE TVHITEHOUSE, December 11, 1931. 111 LETTER OF TRANSMITTAL NATIONALADVISORYCOMMITTEEFOEAEROIiAKiTICS, Ta~hin@on, D. C., Nocember 17, 1931. hf E. PRESIDENT: In comphnce with the provisions of the act of Congress approved March 3, 1915 (U. S. C., title 50, sec. 163), I have the honor to transmit herewith the Seventeenth Annual Report of the National Advisory Committee for Aeronautics for the ikal year ended June 30, 1931. Gratifying progress has been made during the past year in the conduct of fundamental invdgations in aeronautics at the committee’s laboratories. Some of the new scientific data produced during the year have already found application in the development of nditary and commercial airplanes of improved performance. The research programs of the committee cover comprehensively the whole field of aircraft research, with con- tinuing emphasis upon the major problems of increasing the safety, the reliability, and the efficiency of aiqknes. .— The new fuU-scale wind tunnel recently placed in operation miUmake it possible to investigate the aero- ...— dynamic characteristics and behavior of full-sized airplanes. The new N. A. C. A. Tank will make it possible for the fit time to investigate the hydrodynamic characteristics of full-scale seaplane floats and hulk These unique pieces of equipment, in conjunction with the pmpeuer rese~ch t~el~ @~e tile cofittce e~cflent _ laboratory facditks for the conduct of full-scale research ~d VKUenable it better to meet the rese~ch ne~ . _ of military and of commercial aviation. Attention is invited to Part Trof the report presenting a summary of technical progressfin aeronautics. Respectfully submitted. JOSEPHS. AMES,Chairman. THE PFLESIDEIIT, Z%.eWMfe Ho-use, TVashington,D. C. v CONTENTS. _ lkga Letterof subtittd ---------------- ------------------------------------------------------------------------ III Lettwof transmittal--------------------------------------------------- ---------------------- --------------- v Seventeenthannualrepoti------------------------------------------------------------------- -..-----__--— 1 —. — PART I. ORGANIZATION Functiomof thecomittie -------------- --—-------------------------------- --..--.-— ---------------------- 3 Organizationofthecomittie---------------------_-*---------------------- --------------------------------- z Deathof Dr. SamuellV.Stratton---------------------------------------------- ------_.----.----.--.-----..— 4 -.. Meetingsof theentiiecommithc---------------------------------------------------------------------------- 4 Theexecutivecomtithe ------------------- ----__------_-----------—--------------- -.----------.-----_--.-- 4 SutiommithM------------------------------------ --------------------------------------------------------- 5 . Quartersfor committee--------------------------------------------------------------------------------------- 6 TheLangleyMemorialAeronauticalLaborntery---------------------------------------------------------------- 6 — TheOfficeof AeronauticalIntelligence----------------------------------------------------------------------- 7 Financialreport----------------------------------------------------------------------------- ---.--.---..-.--- 8 P.4RTH. GENERAL ACTIVITIES Studyofeircraft actidenti----------------------------------------------------------------------------------- 13 — Considerationofaeronauticalin\'entions------------------------------------------------------------------------ -- 14 Relationstiththe tircraftindustry--------------------------------------------------------------------------- 14 Cooperationof Armyand Na\'y------------------------------------------------------------------------------ 16 Investigationundertakenfor theArmyandthe Navy-_--_-----_-----.:i -------------------------------------- ..- 10 CooperationwithStateDepartmentabroti-------------------------------------------------------------------- 17 Revisionof nomenclaturefor aero~utics---------------------------------------------------------------------- 17 PART HI. REPORTS OF TECHNICAL COMMITTEES ~l)otiof committeeon urodynatics ------------------ ------------------------------- ---_-_-------------.__-.-- 19 Reportof committeeon powerplantsfor aircrtift--_----.-------.-...—------- ----------------------------------- 29 Reportof committeeon materialsfor tircraft----------------------------------------------------------------- 36 . Reportof committee.o!! problemsof airna;tigation------------------------------------------------------------- 43 PARTIV. TECHNICAL PUBLICATION$3 OF THE COMMITTEE Summariesof technicalreporta-------- ------------------------------------------------------------------------- 46 .— Listof technicalnotesissuedduringthepastyear------------------------------------------------------------- 55 Lkt of technicalmemorrmdurnsissued(luringthepmtycar------------------------------------------------------- 5(3 L~tof aircraftcircularsissuedduringthep=tyear ------------------------------------------------------------ 58 Bibliographyof aeronautics----------------------------------- ------------------------------------------------ 59 PART V. SUMMARY OF PROGRESSIN AERONAUTICAL RESEARCH Aerodpwics-----------.--- ----------------------------------- —.= ------------------------------ ------- _ .00 ——. -— Airutit en@nw-------------- -------------------------------------------------------------------------------- 03 Structuralmaterials----------- . .-. ------ ------- ------ -- . --__— -------- ------- . ---.------. ----a- -.-_- M Aimhips--------------------- ---------------------------- -__-__-_-_-------.--_---__--------..------.------m 65 _—. Sugary ------------------ .. .-— . .- ------- -------- ---------- -- —----=-. -----.-- ---_---------4---=_--_.. 66 . — VI . TECHNICAL REPORTS ‘“- Page No.365. AerodynamicCharacteristicsof Circular-hoAirfoilsat HighSpeeds. By L. J. Briggsand H. L. Dryden------ 67 ._- No. 366. Dynamicand FlightTestson Rubber-Cordand O1eo-Rubber-DiskLandingGearsfor an F6C+ Airplane. By — WilliamC. Peck----------------------------------------------------------------------------------- 79 No. 367. PressureDistributionOrera Thick,TaperedandTwistedMonoplane‘Wing3fodel—N.A. C. .&81-J. By Carl J. Kemh@r -------------------------------------------------------------------------------------- 97 . No. 36S.A h’ewChartfor Estimatingthe AbsoIuteCeilingof an Airplane. By WalterS. DieN----------------------- 111 No. 369. ManeuverabilityInvadigationof the F6C-3 AirpIanewithSpeciaIFIightInstruments.By C. H. Deartmrnand .— H. W. fiwWau --------------------------------------------------------------------------------- 117 No. 37o. EfTectof Variationof ChordandSpanof Aileronson HingeJfomentsatSeveralAnglesof Pitch. By B.H. 310nish- 137 No. 371. Present.Statusof AircraftInstruments.By Subcommitteeon Imtrmenti --------------------------------- 153 No.372. The GaseousExplosiveReaction-The Effectof Pressureon the Rateof Propagationof the ReactionZoneand uponthe Rateof XIolecuhwTransformation.By F. W. Stevm ---------------------------------------- 175 No. 373. CkmiTicientsof Dischargeof FuelIn@tion Nozalesfor Compression-IgnitionEngines. By A. G. Gelal.Ies------ 193 No. 374. The AutomotiveIgnitionCoiL By T. H. D-en -------------------------------------------------------- 211 No. 375. Full-ScaIeTeds of MetalPropellersat HighTip Speeds.” By DonaldH. ~md______________________________ 237 ..— No. 376. SomeApproximateEquationsfor theStandardAtmosphere.By WalterS. DieN---------------------------- 257 No. 377. A hfethodof FlightXfemurementof Spins. By HartleyA. Smdeand Nathan F. Scudded-------------------- 267 No. 378. Comparisonof Full-scalePropellersHatingR. A. F.-6 and CIark1“AirfoilSections. By HughB. Freeman---- 83 No. 379. RolIingXomenti Due to RoIiingand Yaw for Four Vihg liodeb in Rotation. By MontgomeryKnightand CarlJ. Wetigw ---------------------------------------------------------------------------------- m No. 380. PresureDistributionOvertheFuselageof a P’W-9PursuitAirplaneinFlight. By RichardV. RhodeandEugene E. Lmdqtid -------------------------------------------------------------------------------------- 327 No. 381. Static,Drop,andFlightTestson MussebnanType Ah-wheels.By W311iamC. PeckandAlbertP.
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