Accession Number : AD0425900

Title :   APPROXIMATE NONEQUILIBRIUM AIR IONIZATION IN HYPERSONIC FLOWS OVER SHARP CONES,

Corporate Author : AEROSPACE CORP SAN BERNARDINO CALIF

Personal Author(s) : Levinsky,E.

Report Date : 08 NOV 1963

Pagination or Media Count : 21

Abstract : A simplified chemical kinetic model is proposed for the thermal ionization of air, permitting approximate closed form solutions for the electron distribution in the inviscid flow field and boundary layer of sharp cones. As long as the gas is still far out of equilibrium and the frozen temperature distribution remains valid, the electron density per unit pressure is found to vary with the similarity parameter, confirming binary scaling. An extreme dependence of electron density on cone angle and length is found. A comparison is presented with the more exact calculations of other investigators to assess the range of validity of the approximate theory. (Author)

Descriptors :   (*ATMOSPHERE ENTRY, ELECTRON DENSITY), (*GAS IONIZATION, ATMOSPHERE ENTRY), (*NOSE CONES, HYPERSONIC CHARACTERISTICS), LAMINAR BOUNDARY LAYER, HYPERSONIC FLOW, CONICAL BODIES, AIR, IONIZATION, CHEMICAL REACTIONS, THEORY, NUMERICAL METHODS AND PROCEDURES, DIFFERENCE EQUATIONS, REACTION KINETICS

Distribution Statement : APPROVED FOR PUBLIC RELEASE