Abstract
Force and moment experiments were conducted for a 65-deg delta wing undergoing ramp-and-hold and harmonic rolling motions. This extensive set of experiments isolated critical-state responses. Motions between critical states and motions crossing critical states were included. Roll-angle amplitude and the roll rate were varied. The total angle of attack and Mach number were held constant at 30 deg and 0.3, respectively. The amount of time required for the rolling moment coefficient to reach 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 state was crossed. Motion history effects were determined for motions that crossed critical states. The effect of roll rate on critical-state transients proved to be insignificant.
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