Abstract

This paper provides a theoretical model f or normal unswept shock wave/boundary layer interaction ( SBLI ) control using an upstream and downstream flap. The amount of flap deflection controls the bleed/suction rate through a plenum chamber . The cavity allows rapid thickening of the boundary layer approachin g the shock, which splits into a series of weaker shocks forming a lambda shock foot, thus reducing wave drag . Th e analysis assist s in the understanding of the control influences produced in the SBLI . It is applied to the MART system at M 1=1.4 as well as to validate and improve the understanding of unimorph flap control at M 1=1.5 .

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