Cover image for Helicopter acoustics : proceedings of an International Specialists Symposium sponsored by the American Helicopter Society, Washington, D.C.; the U.S. Army Research Office, Durham, North Carolina; and the Langley Research Center, Hampton, Virginia, and held at Langley Research Center, May 22-24, 1978.
Title:
Helicopter acoustics : proceedings of an International Specialists Symposium sponsored by the American Helicopter Society, Washington, D.C.; the U.S. Army Research Office, Durham, North Carolina; and the Langley Research Center, Hampton, Virginia, and held at Langley Research Center, May 22-24, 1978.
Author:
International Specialists Symposium on Helicopter Acoustics (1978 : Langley Research Center)
Publication Information:
[Washington] : National Aeronautics and Space Administration, Scientific and Technical Information Office ; Springfield, Va. : for sale by the National Technical Information Service, 1978.
Physical Description:
2 parts : illustrations ; 27 cm.
Language:
English
Format :
Book