Accession Number : AD0688205

Title :   HYPERSONIC CONE DRAG AT HIGH ALTITUDE.

Descriptive Note : Final rept.,

Corporate Author : SPACE SCIENCES INC WALTHAM MASS

Personal Author(s) : Hu,Pung Nien ; Grad,Harold

Report Date : MAY 1969

Pagination or Media Count : 29

Abstract : The near free molecular flow of a slender cone at zero incidence in a hypersonic stream is studied. It is assumed that the cone surface is diffusely reflecting and has a temperature comparable to the free stream temperature. The nonlinear Boltzmann equation for hard sphere molecules is used and an exact expression for the drag is obtained. The result shows that the drag is reduced from its free molecular value. (Author)

Descriptors :   (*CONICAL BODIES, *RAREFIED GAS DYNAMICS), (*DRAG, HYPERSONIC CHARACTERISTICS), HIGH ALTITUDE, INTEGRAL EQUATIONS, DIFFERENTIAL EQUATIONS, BLUNT BODIES, EQUATIONS OF MOTION, SLENDER BODIES

Subject Categories : Aerodynamics
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE