A burst control plate attached to the leading-edge of an airfoil is a device that enhances vortical structures formed inside the laminar separation bubble and can suppress bubble burst. In our previous work, a thin plate type burst control plate was incorporated into a sensor actuator system to work as an autonomous airfoil stall suppression system. In this paper, a rectangular cross section burst control plate, which performs better than the thin plate type, was combined with the modified sensor actuator system to demonstrate that our system works effectively for stall angle delay, lift enhancement and drag reduction. The sensor actuator system uses a pressure transducer and a feedback controller to operate and monitor the actuators in an autonomous mode. Experimental studies of surface pressure and force measurements were conducted for an NACA 0012 airfoil at a chord Reynolds number of 1.3×10~5. In the first section, the system was operated manually. Results indicated that the present manually operated system is an effective device to suppress airfoil stall. Second, a feedback control method for the system was modified and constructed. Finally, the system was operated in the autonomous mode and checked the benefit of the system. It was demonstrated that the present combination of a sensor actuator system and the rectangular cross section burst control plate is an effective means of bubble burst control and airfoil stall suppression.
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