Optimization of overall penetration trajectory for intercontinental boost-glide missile

In considering waypoints,no-fly zones,kill zones of space-based laser weapon and intercept missile,and so on,the overall penetration trajectory for intercontinental boost-glide missile was analyzed.To benefit optimization,the trajectory is divided into four phases by fight states.The dynamics,propulsion,aerodynamics,and aerothermodynamics models are described.With the constraints of stage separation,transonic phase,control,dy-namic pressure,normal overload,heating rate and wall temperature at stagnation point,waypoints,no-fly zones,ma-neuver in kill zones of space-based laser weapon and intercept missile,the optimization model of overall penetration trajectory was established,i.e.multi-constraints multi-phase trajectory optimization model.By using direct shooting method,the associated optimization was converted into a nonlinear programming problem,which was solved through a sequential quadratic programming solver.The numerical results show that the proposed method can effi-ciently solve the optimization problem of overall penetration trajectory with the given constraints,and the trajectory accords with the actual warfare.