Accession Number : AD0487457

Title :   FOCUSSING OF SUPERSONIC DISTURBANCE GENERATED BY A SLENDER BODY IN A NON-HOMOGENEOUS MEDIUM.

Descriptive Note : Technical rept.,

Corporate Author : COLUMBIA UNIV NEW YORK DEPT OF CIVIL ENGINEERING AND ENGINEERING MECHANICS

Personal Author(s) : Myers, Michael K. ; Friedman, Morton B.

Report Date : JUN 1966

Pagination or Media Count : 65

Abstract : The objective of this work is to analyze the flow past a slender body of revolution moving at supersonic velocity in an atmosphere in which the velocity of sound decreases linearly with altitude. The problem is treated in the context of the linearized theory. The primary interest is directed to the pressure distribution occurring in regions where the signal generated by the body is focussed by refraction in the non-homogeneous medium. Expressions are derived for this pressure signature, and it is found that the rise in pressure behind the Mach surface in the variable medium is of the order of four times that occurring behind the Mach cone in a uniform atmosphere. (Author)

Descriptors :   (*SUPERSONIC FLOW, SLENDER BODIES), FOCUSING, SUPERSONIC CHARACTERISTICS, BODIES OF REVOLUTION, PRESSURE, REFRACTION, SONIC BOOM, WAKE, PARTIAL DIFFERENTIAL EQUATIONS.

Subject Categories : Acoustics
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE