Feedback-Controlled Forcefully Attached Flow on a Stalled Airfoil

pressure coefficient to keep the flow attached. Sincea dimensionless pressure coefficient is required for this purpose, two similar sensors were installed in the pitot-static tube that monitored the freestream velocity. The impact of the time delay on the stability of the controller was briefly discussed and accounted for. The robustness of the controller was demonstrated under varying freestream velocities.