Forebody vortex management for yaw control at high angles of attack

The yaw control potential of deploy able forebody strakes at angles of attack above the effectiveness range of conventional rudder has been investigated. The strakes are conformally stored in the forebody and, when deployed, force asymmetric vortex shedding from the forebody, thereby generating a controlled yawing moment. The concept was explored through low-speed wind-tunnel tests on a conical forebody in isolation as well as in generic fighter configurations. Force and moment measurements, supplemented with circumferential pressure and flow visualization surveys on an isolated forebody model, provided insights into the vortex mechanisms generated by forced asymmetrical separations and their yaw control potential at angles of attack up to 80. © 1987 by Dhanvada M. Rao. Published by the American Institute of Aeronautics and Astronautics, Inc.

Duke Scholars

Author Cary Moskovitz Thompson Writing Program