Noise characteristics of eight helicopters /

Bibliographic Details
Main Author:	True, Harold C.
Corporate Authors:	United States. Federal Aviation Administration. Systems Research and Development Service, Transportation Systems Center
Format:	Government Document Book
Language:	English
Published:	Washington : Dept. of Transportation, Federal Aviation Administration, Systems Research & Development Service ; 1977.
Series:	Report (United States. Federal Aviation Administration. Systems Research and Development Service) ; FAA-RD-77-94.
Subjects:	Rotors (Helicopters) > Noise. Helicopters > Flight testing. Noise > Measurement.

Description
Item Description:	Cover title. "Acoustic data acquired and processed into format by the Noise Measurement and Assessment Laboratory, Transportation Systems Center, Cambridge, Massachusetts." Report date: July 1977.
Physical Description:	xiv, 153 pages : illustrations, graphs, map ; 28 cm.
Bibliography:	Bibliography : page 153.