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Engine noise technologyThe characteristics of aircraft engine noise are discussed. Data are provided to show the noise produced by the following aircraft components: (1) fan noise, (2) noise suppressing structures, (3) sonic inlets, (4) jet mixing noise due to nozzle flow, and (5) thrust reversers. Charts are developed to show the sound pressure level and the frequencies for each type of noise source. The use of laminates and composite materials to dissipate acoustic power is examined.
Document ID
19730024229
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Luidens, R. W. (NASA Lewis Research Center Cleveland, OH, United States)
Dietrich, D. R. (NASA Lewis Research Center Cleveland, OH, United States)
Dittmar, J. H. (NASA Lewis Research Center Cleveland, OH, United States)
Goldman, R. G. (NASA Lewis Research Center Cleveland, OH, United States)
Olsen, W. A., Jr. (NASA Lewis Research Center Cleveland, OH, United States)
Miller, B. A. (NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
August 7, 2013
Publication Date
January 1, 1972
Publication Information
Publication: STOL Technol.
Subject Category
Propulsion Systems
Accession Number
73N32962
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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