The research status of supersonic vehicles active drag reduction

With the rapid developing of supersonic vehicles,aerodynamicists believe that drag reduction is the most important means for improving the aerodynamic performance of vehicle.And if drag is reduced,the vehicles can fly faster and farther.Now in many military powers the drag reduction technology is studied and explored.The method and theory of active drag reduction are introduced in this paper.The research on reverse jet,boundary control and energy deposition are reviewed and analyzed.Especially the drag reduction technology of energy deposition is emphasized.Lastly,according to the characteristic of all kinds drag reduction,the involved key technologies are proposed.This paper can put forward some opinions for the developing of supersonic vehicle drag reduction.