LEADER 01722nam  2200517Ia 450 
001 9910697084203321
005 20230902162207.0
035   $a(CKB)5470000002384057
035   $a(OCoLC)694918706
035   $a(EXLCZ)995470000002384057
100   $a20110104d2009      ua             0
101 0 $aeng
135   $aurmn|||||||||
181   $ctxt$2rdacontent
182   $cc$2rdamedia
183   $acr$2rdacarrier
200 00$aDesign of quiet rotorcraft approach trajectories$b[electronic resource] /$fSharon L. Padula ... [and others]
210  1$aHampton, Va. :$cNational Aeronautics and Space Administration, Langley Research Center,$d[2009]
215   $a1 online resource (25 pages) $cillustrations
225 1 $aNASA/TM- ;$v2009-215771
300   $aTitle from title screen (viewed on Jan. 4, 2011).
300   $a"June 2009."
320   $aIncludes bibliographical reference (page 25).
410  0$aNASA technical memorandum ;$v215771.
606   $aGenetic algorithms$2nasat
606   $aRotary wing aircraft$2nasat
606   $aNoise reduction$2nasat
606   $aTrajectories$2nasat
606   $aHelicopters$2nasat
606   $aAcoustic properties$2nasat
606   $aAircraft design$2nasat
615  7$aGenetic algorithms.
615  7$aRotary wing aircraft.
615  7$aNoise reduction.
615  7$aTrajectories.
615  7$aHelicopters.
615  7$aAcoustic properties.
615  7$aAircraft design.
701   $aPadula$b S. L$01390888
712 02$aLangley Research Center.
801  0$bGPO
801  1$bGPO
906   $aBOOK
912   $a9910697084203321
996   $aDesign of quiet rotorcraft approach trajectories$93457415
997   $aUNINA