Exploratory investigation of deflectable forebody strakes for high angle of attack yaw controlA deflectable strake concept was investigated on a conical forebody to evaluate its yaw control potential at high angles of attack. In exploratory low-speed tunnel tests using a generic delta wing fighter configuration, antisymmetrically deflected strakes provided useful levels of yaw power at angles of attack when the conventional rudder became totally degraded. Symmetrical strakes prevented side force development at high angles of attack, and provided pitch control through symmetrical deflection. The strake performance was sensitive to its circumferential position on the forebody due to varying interaction of strake vortices with the wing and vertical tail. The low Reynolds number results of this study provided a favorable initial validation of the concept, subject to verification in regard to scale effects.
Document ID
19860035081
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Rao, D. M. (Vigyan Research Associates, Inc. Hampton, VA, United States)
Murri, D. G. (NASA Langley Research Center Hampton, VA, United States)