Accession Number : AD0681686

Title :   AERODYNAMIC CHARACTERISTICS OF A SPHERE AND BLUNT-NOSED CONE IN A HIGHLY RAREFIED GAS FLOW,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Perepukhov,V. A.

Report Date : 13 JUN 1968

Pagination or Media Count : 20

Abstract : An analytical method for determining the aerodynamic properties of a sphere and blunt-nosed cone in a highly rarefied gas flow is presented, taking account of interactions of rebounding molecules with those of the oncoming stream ahead of the body, moving at high supersonic speed. Expressions for the number of collisions at the point A are established for the cases of a sphere and a truncated cone. The effect of the mutual collisions of the emitted molecules on the aerodynamic characteristics and the effect of attenuation of the oncoming molecules on the rebounding flux are evaluated using the first-collision method.

Descriptors :   (*RAREFIED GAS DYNAMICS, INTERACTIONS), SPHERES, CONICAL BODIES, DRAG, SUPERSONIC CHARACTERISTICS, BLUNT BODIES, MOMENTUM, DENSITY, VELOCITY, TEMPERATURE, COUNTING METHODS, MATHEMATICAL ANALYSIS, FLOW FIELDS, USSR

Subject Categories : Aerodynamics
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE