Abstract
Static stability characteristics of a 5-deg semivertex angle sharp cone at angles of attack up to 4 deg are examined both theoretically and experimentally under hypersonic wind tunnel conditions. Interpretation of the experimental results is based upon a three-dimensional inviscid/laminar boundary-layer analysis and a threedimensional hypersonic viscous shock layer analysis. It is shown that only the three-dimensional hypersonic viscous shock layer approach is capable of accurately predicting the static stability characteristics of a sharp cone at incidence under low Reynolds number hypersonic flow conditions where three-dimensional viscous interaction effects are dominant. Also considered are wall temperature effects on sharp cone at incidence static stability relative to extrapolation of hot-wall hypersonic wind tunnel results to cold-wall flight conditions.
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