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Research In Helicopter NoiseProgress in aeroacoustical theory and experiments reviewed. Report summarizes continuing U.S. Army programs of research into causes of noise generated by helicopters. Topics of study include high-speed impulsive noise, blade/vortex-interaction noise, and low-frequency harmonic noise.
Document ID
19910000400
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Yu, Yung H. (NASA Ames Research Center, Moffett Field, CA.)
Schmitz, Frederic H. (NASA Ames Research Center, Moffett Field, CA.)
Morse, Andrew H. (NASA Ames Research Center, Moffett Field, CA.)
Date Acquired
August 14, 2013
Publication Date
August 1, 1991
Publication Information
Publication: NASA Tech Briefs
Volume: 15
Issue: 8
ISSN: 0145-319X
Subject Category
Mechanics
Report/Patent Number
ARC-12171
Accession Number
91B10400
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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