Abstract
An unpowered entry vehicle model has been tested at Mach numbers 0.10 to 3.54 at angles of attack from 15° to 90°. The tests included variations of blade collective and cyclic pitch angles. A summary of the autorotative equilibrium speed, forces, and moments is presented. The results indicate that adding the to the capsule improved vehicle performance throughout most of the Mach number range. Maximum lift drag ratio was substantially improved at low Mach numbers. Large pitching moments were produced by the rotor, requiring the use of flaps for longitudinal trim. Control phasing was unusual compared to the predicted response of an ideal rotor but did not change grossly with forward flight speed.
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