01602oam 2200457 450 991071673750332120210824133903.0(CKB)5470000002524802(OCoLC)1154320737(EXLCZ)99547000000252480220200514d1938 ua 0engurbn|||||||||txtrdacontentnrdamediancrdacarrierNoise from propellers with symmetrical sections at zero blade angleII /by A.F. DemingWashington, [D.C.] :National Advisory Committee for Aeronautics,1938.1 online resource (14 pages, 6 unnumbered pages) illustrationsTechnical note / National Advisory Committee for Aeronautics ;No. 679"December 1938."Includes errata.No Federal Depository Library Program (FDLP) item number.Includes bibliographical references (page 14).Propellers, AerialNoiseTestingNoisefastPropellers, AerialTestingfastPropellers, AerialNoiseTesting.Noise.Propellers, AerialTesting.Deming A. F.1391553United States.National Advisory Committee for Aeronautics,TRAALTRAALOCLCOOCLCFGPOBOOK9910716737503321Noise from propellers with symmetrical sections at zero blade angle3445425UNINA