CRITICAL-STATE TRANSIENTS FOR A ROLLING 65-DEGREE DELTA-WING

Force and moment experiments were conducted for a 65-deg delta wing un dergoing ramp-and-hold and harmonic rolling motions, This extensive se t of experiments isolated critical-state responses. Motions between cr itical states and motions crossing critical states were included, Roll -angle amplitude and the roll rate were varied, The total angle of att ack and Mach number were held constant at 30 deg and 0.3, respectively . The amount of time required for the rolling moment coefficient to re ach its steady-state value after the end of a ramp was quantified for numerous ramp motions, This relaxation time was a significantly large value for many of the motions, especially when the 5-deg critical stat e was crossed. Motion history effects were determined for motions that crossed critical states. The effect of roll rate on critical-state tr ansients proved to be insignificant.