Modification of sonic boom wave forms during propagation from the source to the ground

A number of physical processes work to modify the shape of sonic boom wave forms as the wave form propagates from the aircraft to a receiver on the ground. These include frequency-dependent absorption, nonlinear steepening, and scattering by atmospheric turbulence. In the past two decades, each of t...

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Bibliographic Details
Published inThe Journal of the Acoustical Society of America Vol. 111; no. 1 Pt 2; p. 481
Main Authors Bass, Henry E, Raspet, Richard, Chambers, James P, Kelly, Mark
Format Journal Article
LanguageEnglish
Published United States 01.01.2002
Subjects
Aircraft
Algorithms
Models, Theoretical
Sound
Time Factors
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Summary:A number of physical processes work to modify the shape of sonic boom wave forms as the wave form propagates from the aircraft to a receiver on the ground. These include frequency-dependent absorption, nonlinear steepening, and scattering by atmospheric turbulence. In the past two decades, each of these effects has been introduced into numerical prediction algorithms and results compared to experimental measurements. There is still some disagreement between measurements and prediction, but those differences are now in the range of tens of percent. The processes seem to be understood. The present understanding of sonic boom evolution will be presented along with experimental justification.
ISSN:0001-4966
DOI:10.1121/1.1404375