02250oam 2200553 450 991070495880332120131121113123.0(CKB)5470000002446157(OCoLC)777848388(OCoLC)761120729(EXLCZ)99547000000244615720120220d1988 ua 0engurcn|||||||||txtrdacontentcrdamediacrrdacarrierAcoustic measurements from a rotor blade-vortex interaction noise experiment in the German-Dutch wind tunnel (DNW) /R.M. Martin [and three others]Washington, DC :National Aeronautics and Space Administration, Scientific and Technical Information Division,1988.1 online resource (iii, 178 pages) illustrationsNASA technical memorandum ;4024AVSCOM technical report ;87-B-4Title from title screen (viewed Nov. 20, 2013)."March 1988."Includes bibliographical references (page 8).Acoustic measurements from a rotor blade-vortex interaction noise experiment in the German-Dutch wind tunnel Acoustic measurementnasatBlade-vortex interactionnasatHelicoptersnasatRotorsnasatWind tunnel modelsnasatWind tunnel testsnasatAcoustic measurement.Blade-vortex interaction.Helicopters.Rotors.Wind tunnel models.Wind tunnel tests.Martin R. M(Ruth McVoy),1956-1410052United States.National Aeronautics and Space Administration.Scientific and Technical Information Division,United States.Army Aviation Research and Technology Activity,United States.National Aeronautics and Space Administration,OCLCEOCLCEOCLCQGPOBOOK9910704958803321Acoustic measurements from a rotor blade-vortex interaction noise experiment in the German-Dutch wind tunnel (DNW)3528602UNINA