01697oam 2200493I 450 991071345450332120200427102659.0(CKB)5470000002501108(OCoLC)1117765728(EXLCZ)99547000000250110820190909d1923 ua 0engurbn|||||||||txtrdacontentcrdamediacrrdacarrierVariation in the number of revolutions of air propellers /by W. Achenbach[Washington, D.C.] :National Advisory Committee for Aeronautics,1923.1 online resource (7 pages)Technical notes / National Advisory Committee for Aeronautics ;No. 131"March 1923.""From Technische Berichte, Vol. III, Part 2.""Translated by the National Advisory Committee for Aeronautics"--Page 7.No Federal Depository Library Program (FDLP) item number.Includes bibliographical references.Propellers, AerialPropellersTestingPropellers, AerialfastPropellersTestingfastPropellers, Aerial.PropellersTesting.Propellers, Aerial.PropellersTesting.Achenbach W.1216399United States.National Advisory Committee for Aeronautics,TRAALTRAALOCLCOOCLCFGPOBOOK9910713454503321Variation in the number of revolutions of air propellers3488446UNINA