Some Effects of Flight Path and Atmospheric Variations on the Boom Propagated from a Supersonic Aircraft PDF Download

Author: Raymond L. Barger
Publisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 40

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Book Description
Equations for the shock wave envelope and cusp line associated with the boom propagated from a supersonic aircraft are formulated in terms of the moving-trihedral coordinate system for flight in a uniform atmosphere and also in an atmosphere with a linear sound-speed gradient. Ray-tube theory is used to calculate the lateral distribution of boom intensity in an atmosphere with a linear sound-speed gradient and also to investigate the effect of a general wind and sound-speed gradient on the ground-track intensity. The relative effects of wind and temperature gradient are treated. The mechanism of focusing by winds and by ground structures are discussed qualitatively.