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a comparison of computer codes for the propagation of sonic booms through realistic atmospheres utilizing actual acoustic signaturesA numerical exercise to compare computer codes for the propagation of sonic booms through the atmosphere is reported. For the initial portion of the comparison, artificial, yet realistic, waveforms were numerically propagated through identical atmospheres. In addition to this comparison, one of these codes has been used to make preliminary predictions of the boom generated from a recent SR-71 flight. For the initial comparison, ground waveforms are calculated using four different codes or algorithms: (1) weak shock theory, an analytical prediction, (2) SHOCKN, a mixed time and frequency domain code developed at the University of Mississippi, (3) ZEPHYRUS, another mixed time and frequency code developed at the University of Texas, and (4) THOR, a pure time domain code recently developed at the University of Texas. The codes are described and their differences noted.
Document ID
19960055057
Document Type
Conference Paper
Authors
Chambers, James P.
(Mississippi Univ. University, MS United States)
Cleveland, Robin O.
(Texas Univ. Austin, TX United States)
Bass, David T.
(Mississippi Univ. University, MS United States)
Raspet, Richard
(Mississippi Univ. University, MS United States)
Blackstock, David T.
(Texas Univ. Austin, TX United States)
Hamilton, Mark F.
(Texas Univ. Austin, TX United States)
Date Acquired
August 17, 2013
Publication Date
July 1, 1996
Publication Information
Publication: The 1995 NASA High-Speed Research Program Sonic Boom Workshop
Volume: 1
Subject Category
Acoustics
Funding Number(s)
CONTRACT_GRANT: NAG1-1460
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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IDRelationTitle19960055049Analytic PrimaryThe 1995 NASA High-Speed Research Program Sonic Boom Workshop
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