LEADER 01936nam  2200577Ia 450 
001 9910699539703321
005 20230902161603.0
035   $a(CKB)5470000002403530
035   $a(OCoLC)658193867
035   $a(EXLCZ)995470000002403530
100   $a20100826d1993      ua             0
101 0 $aeng
135   $aurbn|||||||||
181   $ctxt$2rdacontent
182   $cc$2rdamedia
183   $acr$2rdacarrier
200 00$aTakeoff/approach noise for a model counterrotation propeller with a forward-swept upstream rotor$b[electronic resource] /$fRichard P. Woodward, ... [and others]
210  1$a[Cleveland, Ohio] :$c[National Aeronautics and Space Administration, Lewis Research Center],$d[1993]
215   $a1 online resource (21 pages) $cdigital, PDF file
225 1 $aNASA technical memorandum ;$v105979
300   $aTitle from title screen (viewed Aug. 25, 2010).
320   $aIncludes bibliographical references (page 7).
410  0$aNASA technical memorandum ;$v105979.
606   $aAcoustic properties$2nasat
606   $aAeroacoustics$2nasat
606   $aAircraft noise$2nasat
606   $aApproach$2nasat
606   $aContrarotating propellers$2nasat
606   $aCounter rotation$2nasat
606   $aSound pressure$2nasat
606   $aTakeoff$2nasat
606   $aTurboprop aircraft$2nasat
606   $aWind tunnel tests$2nasat
615  7$aAcoustic properties.
615  7$aAeroacoustics.
615  7$aAircraft noise.
615  7$aApproach.
615  7$aContrarotating propellers.
615  7$aCounter rotation.
615  7$aSound pressure.
615  7$aTakeoff.
615  7$aTurboprop aircraft.
615  7$aWind tunnel tests.
701   $aWoodward$b Richard P$01411998
712 02$aLewis Research Center.
801  0$bGPO
801  1$bGPO
906   $aBOOK
912   $a9910699539703321
996   $aTakeoff$93537732
997   $aUNINA