Helicopter main-rotor noise
Subtitle: determination of source contributions using scaled model data
By: Thomas F. Brooks, J. Ralph Jolly, Jr., Michael A. Marcolini.
Contributors: Jolly, J. Ralph.; Marcolini, Michael A.; United States. National Aeronautics and Space Administration. Scientific and Technical Information Division.
Series: NASA technical paper -- 2825.
Publisher: National Aeronautics and Space Administration, Scientific and Technical Information Division; For sale by the National Technical Information Service]
Published: 1988
Place of publication: [Washington, D.C.]; [Springfield, Va
Language: eng
Format: Microform
Subjects: Rotors (Helicopters) -- Noise.
Other titles: Helicopter main rotor noise.
Notes: Distributed to depository libraries in microfiche.

Microfiche. [Washington, D.C.? : National Aeronautics and Space Administration], 1988. 1 microfiche ; 11 x 15 cm.