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Analytic models of ducted turbomachinery tone noise sources. Volume 2: Subprogram documentationAnalytical models were developed for computing the periodic sound pressures of subsonic fans in an infinite hardwall annular duct with uniform flow. The computer programs are described which are used for numerical computations of sound pressure mode amplitudes. The data are applied to the acoustic properties of turbomachinery.
Document ID
19740022132
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
D6-43296-2
NASA-CR-132444
Accession Number
74N30245
Funding Number(s)
CONTRACT_GRANT: NAS1-12257
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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