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Acoustic and aerodynamic study of a pusher-propeller aircraft model

Soderman, Paul T.
[Washington, D.C.] : National Aeronautics and Space Administration, Office of Management, Scientific and Technical Information Division ; Springfield, Va. : For sale by the National Technical Information Service, 1990. 1990

Annoyance caused by advanced turboprop aircraft flyover noise counter-rotating propeller configurati

McCurdy, David A.
Washington, D.C. : National Aeronautics and Space Administration ; [Springfield, Va. : National Technical Information Service, distributor, 1990] 1990

Experimental assessment of helicopter rotor turbulence ingestion noise in hover

Simonich, John C. (John Charles)
Hampton, Va. : National Aeronautics and Space Administration, Langley Research Center, [1989] 1989

Noise produced by turbulent flow into a rotor theory manual for atmospheric turbulence prediction an

Simonich, John C. (John Charles)
Hampton, Va. : National Aeronautics and Space Administration, Langley Research Center, [1989] 1989