Measurement resolution of noise directivity patterns from acoustic flight tests
By: David A. Conner.
Contributors: United States. National Aeronautics and Space Administration. Scientific and Technical Information Division.; United States. Army Aviation Systems Command.
Series: NASA technical memorandum -- 4134.; AVSCOM technical report -- 89-B-004.
Publisher: National Aeronautics and Space Administration, Office of Management, Scientific and Technical Information Division; For sale by the National Technical Information Service]
Published: 1989
Place of publication: [Washington, D.C.]; [Springfield, Va
Language: eng
Format: Microform
Number of pages: 40
Subjects: Helicopters -- Noise -- Measurement.; Aeroacoustics.; Aircraft noise.; Directivity.; Flight tests.; Noise measurement.; Resolution.
Notes: Shipping list no.: 90-0470-M.

"Performing organization report no.: L-16456"--Technical rept. documentation p.

Includes bibliographical references (p. 10-11).

Also available via Internet from the NASA Technical Report Server web site. Address as of 7/13/06: http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19900001363%5F1990001363.pdf; current access available via PURL.

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

National Aeronautics and Space Administration and U.S. Army Aviation Systems Command 505-63-51-07.