Helicopter tail rotor blade-vortex interaction noise
Subtitle: final technical report
By: Albert R. George and S.-T. Chou.
Contributors: Chou, Shau-Tak.; United States. National Aeronautics and Space Administration.
Series: NASA contractor report -- NASA CR-183178.
Publisher: National Aeronautics and Space Administration
Published: 1989
Place of publication: [Washington, DC
Language: eng
Format: Microform
Subjects: Noise control.; Acoustical engineering.
Notes: Distributed to depository libraries in microfiche.

Microfiche. [Washington, D.C.? : National Aeronautics and Space Administration], 1989. 1 microfiche.