Research On Trajectory Optimization Of Gliding Extended Range Rocket

Extended range technology is a key research direction of today's artillery,missile,rocket and other weapon systems.Unlike other range extension methods,the glide range extension technology is based on the controllable projectile flight.Its role is as follows: Gliding extended range projectiles are in ballistic flight.The projectile control system deflects the actuator according to a certain rule through control instructions to change the attitude of the projectile and make the projectile glide in accordance with the predetermined trajectory to achieve range extension.The content of this paper is the trajectory optimization simulation of glide extended range rocket.First,a six-degree-of-freedom model of the rocket's outer trajectory is established,and secondly,a controllable projectile particle model for analysis is obtained.Then,The optimization process of different optimization algorithms is introduced,and the influence of different algorithms on the trajectory optimization results of glide extended-range rockets is studied.the principle of glide range extension is analyzed,the solution method—the principle of minimum value and the method of parameter optimization is introduced.And the parameter optimization model of the trajectory of glide extended range rocket projectile with the change sequence of angle of attack over time and the firing angle as design variables.And Isight optimization software was used to perform the first optimization simulation of the rocket,and the overall angle of attack was re-optimized based on the results of the first optimization simulation.A penalty function model for trajectory optimization of glide extended range rockets is established,which transforms the glide range extension of rockets from constrained optimization to unconstrained optimization.Different scheme trajectories were designed to verify the effects of glide extended range rockets at three target ranges: near,medium and far at different firing angles and altitudes.The trajectory optimization simulation results of the glide extended range rocket projectile show that the parametric optimization design of the glide extended range rocket projectile using the parameter optimization model increases the rocket's range by 98.7.Using different optimization algorithms for optimization design,the results show that the Hooke-Jeeves optimization algorithm can search for the optimal solution of the glide range extension optimization problem faster.It is verified that the rocket can reach the predetermined range after optimized design under different launch conditions.