级间段气动设计及羽流诱导分离对火箭气动特性的影响

AERODYNAMIC DESIGN OF INTERSTAGE AND THE EFFECTS OF PLUME INDUCED FLOW SEPARATION ON AERODYNAMICS OF ROCKETS

Stage separation features of multistage rockets with solid and liquid pro-pellants are described. The differences of the two sorts of rockets in exhaust holes and itage -separation aerodynamics are analysed. The Effects of the exhaust holes and their area, amount and shape on the interstage pressure and thermal environment are discussed. Above some altitude within atmosphere layer, the boundary layer on after body will separate due to plume. The effects of such plume induced flow separation on aerodynamics of rockets are discussed, especially the derivative of normal force with respect to angle of attack, pressure center and axial force. Some experimental results are presented.