Accession Number : AD0721932

Title :   Nonlinear Acoustic Behavior at a Caustic,

Corporate Author : BOEING SCIENTIFIC RESEARCH LABS SEATTLE WASH

Personal Author(s) : Seebass,R.

Report Date : FEB 1971

Pagination or Media Count : 52

Abstract : The paper is concerned with modifying the basic theory of sonic booms to include nonlinear effects not properly accounted for in the neighborhood of a caustic. The basic theory accounts for nonlinear effects on the propagation of the pressure signal down a ray tube, but the concept of ray tubes is a linear one. The envelope of the rays is a caustic surface; this surface is the locus of cusps in the acoustic wave fronts. Interest is in the detailed structure of the wave front as it reflects at a caustic surface. (Author)

Descriptors :   (*SONIC BOOM, MATHEMATICAL MODELS), SHOCK WAVES, WAVE FUNCTIONS, REFLECTION, SUPERSONIC FLIGHT, PARTIAL DIFFERENTIAL EQUATIONS, NONLINEAR SYSTEMS

Subject Categories : Acoustics

Distribution Statement : APPROVED FOR PUBLIC RELEASE