Study On Reentry Trajectory Optimization For Boost-Glide Missile

Trajectory-glide missile is a kind of combined missile with long range,high precision and high mobility.It is of great significance to solving the problem of traditional ballistic missile penetration.Therefore,it is necessary to study its ballistic optimization problem,so as to maximize its performance.In this paper,the maximum range optimization of the trajectory-glide missile and the estimation of the reachable region are studied.The main works are as follows:1.A three-degree-of-freedom kinematics model of the reentry stage of the trajectory-gliding vehicle is established in the geocentric inertial coordinate system.The position information of the missile is described by the latitude and longitude and the altitude.The speed information is described by speed,track angle and course angle.The angle of attack and the angle of inclination are the control variables.In order to improve the accuracy and efficiency of the calculation,the operating equation of the dimensionless processing.2.The optimization of maximum trajectory and the effect of initial conditions on the maximum range are studied.Firstly,the maximum range of the reentry section of the ballistic-glide missile is described.According to the arc length between two points on the spherical surface,the maximum range calculation formula based on latitude and longitude of the initial point and the end point is proposed.Because of too many constrains and non-linear constrains,The Gaussian pseudospectral method is first used to discretize the original problem.It uses the quadratic programming method to optimize the solution.The maximum range of reentry section of ballistic-glide missile is optimized.Then the initial conditions are changed,and the influence of the initial path angle and velocity on the maximum range is analyzed.3.The problem of the reachable region of the ballistic-glide missile and the estimation of the reachable region with the flight restricted region is studied.First,the definition of reachable area is introduced,and the estimation method of the reachable area is given.Then,the flight region is set up and modeled,and the method of estimating reachable region with flying restricted region is explored.Through simulation,the maximum range capability of the ballistic-glide missile is analyzed,and the reachable region of the ballistic-glide missile is estimated.It is of great significance to understand the flight characteristics of ballistic-gliding missile,and play its maximum performance...