Validation of engineering methods for predicting hypersonic vehicle controls forces and momentsThis work examines the ability of the aerodynamic analysis methods contained in an industry standard conceptual design code, the Aerodynamic Preliminary Analysis System (APAS II), to estimate the forces and moments generated through control surface deflections from low subsonic to high hypersonic speeds. Predicted control forces and moments generated by various control effectors are compared with previously published wind-tunnel and flight-test data for three vehicles: the North American X-15, a hypersonic research airplane concept, and the Space Shuttle Orbiter. Qualitative summaries of the results are given for each force and moment coefficient and each control derivative in the various speed ranges. Results show that all predictions of longitudinal stability and control derivatives are acceptable for use at the conceptual design stage.
Document ID
19910062529
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Maughmer, M. (Pennsylvania State Univ. University Park, PA, United States)
Straussfogel, D. (Pennsylvania State Univ. University Park, PA, United States)
Long, L. (Pennsylvania State University University Park, United States)
Ozoroski, L. (Lockheed Engineering and Sciences Co. Hampton, VA, United States)