Abstract

When a vehicle such as a rocket moves through atmospheric turbulence of large spatial scale, the pressure is at any instant essentially uniform over the entire vehicle surface, but this uniform pressure changes randomly in time. Measurements of gust load spectra provide estimates of the significant parameters describing the pressure field. The modal response of a simple elastic system and the sound reradiated by this system are determined. Atmospheric turbulence appears to be a potentially significant noise source in flight vehicles. [Supported by Wright Air Development Center under Contract No. AF 33(616)-6217.]

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