Significance of the dihedral-effect for a combat aircraft in rapid fuselage-reorientation maneuversIn the quest for understanding problems of supermaneuverability for combat aircraft, a study is presented about the role the dihedral-effect can have in fuselage-reorientation maneuvers that involve high angles of attack. A mathematical model for attitude maneuvers is developed, which accurately represents the High Angle-of-Attack Research Vehicle, including thrust-vectoring generated propulsive moments. The fuselage-reorientation problem is posed as an unconstrained time-optimal control problem. Results for a few families of extremal trajectories are obtained, and the global role of the dihedral effect in the course of the corresponding maneuvers is discussed. In addition, a detailed case-study is presented for an extremal trajectory which utilizes the dihedral effect with considerable benefit.
Document ID
19920072735
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Bocvarov, Spiro (NASA Langley Research Center Hampton, VA, United States)
Cliff, Eugene M. (NASA Langley Research Center Hampton, VA, United States)
Lutze, Frederick H. (Virginia Polytechnic Institute and State University Blacksburg, United States)