An active flow control device and method for improving the aerodynamic efficiency
of airfoils. The device and method pertain to the application of hybrid intermittent
suction or intake of low-energy boundary layer fluid into an airfoil through one
or more inlet openings while also applying intermittent blowing or expulsion of
fluid out of such an airfoil into the boundary layer through one or more outlet
openings for the purpose of delaying or eliminating boundary layer separation.
