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The acoustic response of a propeller subjected to gusts incident from various inflow anglesThe acoustic effect of perturbing the inflow field of a propeller was studied. The perturbation was caused by a jet of air blowing into the propeller disc from various angles, creating spanwise and chordwise flow disturbances along the blades. The effects of the gust angle, speed and turbulence, and propeller rpm and thrust are shown with narrowband spectra and directivity plots of the acoustic field. A prediction method for the peaks of the harmonics of the blade passing frequency for various gust and propeller conditions is presented.
Document ID
19830046792
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Jonkouski, G. C. (NASA Ames Research Center Moffett Field, CA, United States)
Horne, W. C. (NASA Ames Research Center Moffett Field, CA, United States)
Soderman, P. T. (NASA Ames Research Center Moffett Field, CA, United States)
Date Acquired
August 11, 2013
Publication Date
April 1, 1983
Subject Category
Acoustics
Report/Patent Number
AIAA PAPER 83-0692
Meeting Information
Meeting: American Institute of Aeronautics and Astronautics, Aeroacoustics Conference
Location: Atlanta, GA
Start Date: April 11, 1983
End Date: April 13, 1983
Sponsors: American Institute of Aeronautics and Astronautics
Accession Number
83A28010
Distribution Limits
Public
Copyright
Other

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