Trajectory Optimization and Parameter Analysis for Boost-Glide Missile

To analyze the performance of boost-glide missile,a trajectory design method that boost phase and glide phase were optimized separately was proposed.A method for quickly evaluating booster parameter was given.The optimization model for boost-glide trajectory was presented,and the whole trajectory was devided into boost phase and glide phase.By Gauss pseudospectral method(GPM),the trajectory design problem was transformed to the nonlinear programming(NLP)problem,and the sequential quadratic programming(SQP)method was used to solve the NLP problem.Simulation results show that the method is effective,the fluctuation of the optimal trajectory is small,the controlled parameter changes smoothly,and all the constraints can be satisfied.Based on trajectory optimization,the influence of takeoff mass and burnout velocity angle on range were analyzed and compared with ballistic missile.The results show that the boost-glide trajectory has an advantage over the ballistic trajectory in range.