This paper presents the numerical studies on the effect of atmospheric turbulence on sonic boom signatures. The authors developed the SPnoise for Sonic Boom, which is a numerical analysis code to simulate the essential effect of atmospheric turbulence on sonic booms, i.e., fluctuation of the medium due to turbulence and focusing/defocusing of a sharp wavefront as a result of diffraction. Waveforms obtained from SPnoise for Sonic Boom are compared with those by sonic boom measurements from D-SEND#2, the second flight test of the Drop Test for Simplified Evaluation of Non-symmetrically Distributed Sonic Boom project, and fairly good agreement between simulated and measured waveforms is achieved.


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    Title :

    Numerical Evaluation of Sonic Boom Deformation due to Atmospheric Turbulence



    Published in:

    AIAA Journal ; 59 , 3 ; 972-986


    Publication date :

    2021-03-01




    Type of media :

    Conference paper , Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English







    Sonic Boom Variability Due to Homogeneous Atmospheric Turbulence

    Yamashita, Hiroshi / Obayashi, Shigeru | AIAA | 2009