Research Progress and Application in Aeronautics of Flow Control Technology for Increasing Lift and Reducing Drag

Abstract

Flow control technique is an important research field of aerodynamics. Flow control technique uses the interactions of fluid hydrodynamic to control and amplify the flow signal by changing the local flow. As far as possible to optimize the flow field distribution, increase the lift, reduce the drag and effectively improve the lift drag ratio, are also the important research subjects in aircraft design. As the requirements of plane design performance improving constantly, the fluid flow control becomes more and more important, and shows the irreplaceable role. In this paper the passive flow control method and active flow control method with applications to increasing lift and reducing drag are introduced in detail. The conclusion is active flow control’s effect is more obvious compared by the passive flow control means. The working keys and directions are put forward in the paper. Keywordspassive flow control; active flow control; drag reduction; high lift