Unsteady aerodynamics research primarily is focused on the limit cycle oscillations of slender delta wing and their control. Both pitching and plunging motions have been used to reduce the wing-rock. Current work in wind tunnel and water tunnel deals with the Roll-Yaw coupled oscillations.
Slender delta wing mounted in the water tunnel. (Photo credit: Aleem)
PLIF of plan-convex cross-section dalta wing mounted in the water tunnel. (Photo credit: Aleem)
Khan, M. J., Ahmed, A., Deihl, O., “Response of Free-to-Roll Slender Delta Wing to Pitching and Plunging,” Journal of Aircraft, Vol. 43, No.1, 2006, pp275-278
Roll-Yaw Coupled Limit Cycle Oscillations of a Slender Delta
Walker, J. F. C., Ahmed, A., “An Investigation of Coupled Roll-Yaw Oscillations of a Slender Delta
Control of Wake Turbulence by Wing-Tip Modulation
