APPLICATION OF GENERALIZED NEWTONIAN THEORY TO THREE-DIMENSIONAL SHARP-NOSE SHOCK-DETACHED BODIES AT MACH 6 FOR ANGLES OF ATTACK UP TO 25°

摘要

Pressure distributions were obtained for three-dimensional sharp-nose parabolic-arc, circular-arc, and conical bodies having an apex half-angle greater than that for shock detachment (aerodynamically blunt bodies) at Mach number of 6 for angles of attack up to 25°. The maximum pressure coefficient was found to increase continuously from the shock-attachment value to the stagnation value behind a normal shock between apex deflection angles of 56° and 6l°, 65°, or 69° depending on the body contour. The data for contoured bodies are correlated very well by the generalized form of Newtonian theory. In addition, at all angles of attack for all aerodynamically blunt bodies having curved surfaces, the agreement between the generalized form of the Newtonian theory and the measured values of pressure coefficient was reasonably good for surface-deflection angles above 30°.