Helicopter noise reduction design trade-off study
By: Michael A. Bowes.
Contributors: United States. Federal Aviation Administration. Operations Section A.
Publisher: Dept. of Transportation, Federal Aviation Administration, Operations Section A; for sale by the National Technical Information Service
Published: 1977
Place of publication: Washington; Springfield, Va
Language: eng
Number of pages: 236
Subjects: Helicopters -- Noise.; Noise control -- Economic aspects -- United States.
Notes: Report no. R-1493.

Prepared by Kaman Aerospace Corporation under contract no. DOT-FA76WA-3791.

Final report, issued Jan. 1977.

Includes bibliographical references.