01840oam 2200529 450 991071389350332120200820130708.0(CKB)5470000002504755(OCoLC)1104148299(EXLCZ)99547000000250475520190610d1953 ua 0engurbn|||||||||txtrdacontentcrdamediacrrdacarrierAn airborne indicator for measuring vertical velocity of airplanes at wheel contact /by Robert C. DreherWashington, [D.C.] :National Advisory Committee for Aeronautics,1953.1 online resource (19 pages) illustrationsTechnical notes / National Advisory Committee for Aeronautics ;No. 2906"February 1953."No Federal Depository Library Program (FDLP) item number.Includes bibliographical references (page 7).AirplanesLanding gearImpactMeasurementMeasuring instrumentsAirplanesLanding gearfastImpactMeasurementfastMeasuring instrumentsfastAirplanesLanding gear.ImpactMeasurement.Measuring instruments.AirplanesLanding gear.ImpactMeasurement.Measuring instruments.Dreher Robert C.1407992United States.National Advisory Committee for Aeronautics,TRAALTRAALOCLCOTRAALOCLCFGPOBOOK9910713893503321An airborne indicator for measuring vertical velocity of airplanes at wheel contact3490674UNINA