Theoretical prediction of nonlinear propagation effects on noise signatures generated by subconic or supersonic propeller - or rotor-blade tips
By: Raymond L. Barger.
Contributors: United States. National Aeronautics and Space Administration. Scientific and Technical Information Office.; Langley Research Center.
Series: NASA technical paper -- 1660.
Publisher: National Aeronautics and Space Administration, Scientific and Technical Information Office; For sale by the National Technical Information Service
Published: 1980
Place of publication: Washington, D.C; [Springfield, Va
Language: eng
Number of pages: 16
Subjects: Acoustical engineering.; Noise control.; Propellers -- Testing.; Rotors -- Testing.
Notes: "May 1980"--Cover.

"Langley Research Center."