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EFFECTS OF CHEMICAL NONEQUILIBRIUM, MASS TRANSFER, AND VISCOUS INTERACTION ON SPHERICALLY BLUNTED CONES AT HYPERSONIC CONDITIONS.
Final rept. Jan 68-Jul 69,
ARNOLD ENGINEERING DEVELOPMENT CENTER ARNOLD AIR FORCE STATION TENN
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Results are presented for chemical nonequilibrium inviscid and viscid laminar flow field calculations around spherically blunted cone geometries 10-, 15-, and 20-deg half-angle at high altitude, high-speed, zero angle-of-attack conditions in the earths atmosphere 250,000 ft at 25,000 ftsec, 200,000 ft at 20,000 ftsec, and 150,000 ft at 15,000 ftsec. The effects of atom recombination at the body surface are analyzed by considering both catalytic and noncatalytic wall conditions for three different wall temperatures 540, 2500, and 5000R. Injection of a foreign gas either nonreacting helium or argon or chemically reacting carbon dioxide is included in order to study the effects of mass transfer. Treatment of the stagnation point using both boundary-layer and thin viscous shock-layer analyses is emphasized, as well as the influence of viscous interaction over the entire body. Author
APPROVED FOR PUBLIC RELEASE