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Analytic models of ducted turbomachinery tone noise sources. Volume 1: AnalysisThe analytic models developed for computing the periodic sound pressure of subsonic fans and compressors in an infinite, hardwall annular duct with uniform flow are described. The basic sound-generating mechanism is the scattering into sound waves of velocity disturbances appearing to the rotor or stator blades as a series of harmonic gusts. The models include component interactions and rotor alone.
Document ID
19740022131
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Clark, T. L. (Boeing Commercial Airplane Co. Seattle, WA, United States)
Ganz, U. W. (Boeing Commercial Airplane Co. Seattle, WA, United States)
Graf, G. A. (Boeing Commercial Airplane Co. Seattle, WA, United States)
Westall, J. S. (Boeing Commercial Airplane Co. Seattle, WA, United States)
Date Acquired
September 3, 2013
Publication Date
May 1, 1974
Subject Category
Propulsion Systems
Report/Patent Number
NASA-CR-132443
D6-43296-1
Accession Number
74N30244
Funding Number(s)
CONTRACT_GRANT: NAS1-12257
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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