Test Mechanism for Measuring Pitch-Damping Derivatives of Missile Configurations at High Angles of Attack.

摘要

Pitch-damping tests were conducted at M = 1.96 to evaluate the newly developed high-alpha missile test mechanism. Data were obtained using the small-amplitude free-oscillation technique at angles of attack from -12 to 86 deg at Reynolds numbers, based on model diameter, of 86,000 and 187,000. Two missile configurations having length-to-diameter ratios (l/d) of 10 and 15 were tested. The l/d = 10 configuration is commonly known as the Basic Finner. The test mechanism proved capable of measuring the pitch derivatives. Strut interference was not appreciable. The derivatives were found to be nonlinear functions of angle of attack, and previously published data at low angles of attack agreed well with the present results.