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The effect of non-linear propagation in jet noiseAn experimental investigation of the nonlinear propagation effects which occur in the noise radiated from low and moderate Reynolds number supersonic jets has been performed. An array of three condenser microphones was used to measure the waveforms propagated by axisymmetric, cold model jets of Mach numbers 2.1 and 2.5. Relatively low Reynolds numbers were obtained by exhausting the jets into a low pressure anechoic test chamber. The results show that phenomena normally associated with nonlinear acoustic propagation, such as wave steepening, harmonic generation and wave merging, are measurable in the high speed model jets.
Document ID
19820034401
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Gallagher, J. A.
Date Acquired
August 10, 2013
Publication Date
January 1, 1982
Subject Category
Acoustics
Report/Patent Number
AIAA PAPER 82-0416
Meeting Information
Meeting: Aerospace Sciences Meeting
Location: Orlando, FL
Start Date: January 11, 1982
End Date: January 14, 1982
Sponsors: American Institute of Aeronautics and Astronautics
Accession Number
82A17936
Funding Number(s)
CONTRACT_GRANT: NAG1-10
Distribution Limits
Public
Copyright
Other

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