自律制御機構つき剥離泡崩壊制御板による翼型失速抑制システム

抄録

After the laminar boundary layer separates from the surface of the airfoil, the flow can reattach to the surface downstream. The area between laminar separation and reattachment is called a laminar separation bubble. The breakdown of the laminar separation bubble affects the stall characteristics of the airfoil significantly. Previous studies indicated that the breakdown of the laminar separation bubble can be suppressed by attaching a rectangular plate at the leading edge of the airfoil and adjusting the height of the plate appropriately. In this study, an autonomous actuator system which automatically adjusts the height of the plate following to the increment or decrement of the angle of attack was created. The experiments to verify this system were conducted for NACA0012 airfoil at a chord Reynolds number of 1.3×10⁵. Here, verification results of the system are summarized and its effectiveness to suppress the airfoil stall is discussed.