Ballistic Planning Technology For Gliding Extended Range Guided Artillery Shells

Gliding range-extended guided artillery shells are based on controlled flight.In the course of flight,by sending control commands to the control system,the actuator is deflected according to certain rules,so that the attitude of the shell changes and it glides according to a pre-set ballistic trajectory to achieve range extension,increase the range of the munition and realise long-range precision strikes,so that it has the advantages of both tactical missiles and ordinary artillery shells,It not only has the advantages of low cost per shot and rapid response,but also has high strike accuracy.The main research of this paper is as follows:Firstly,a six-degree-of-freedom external ballistic model is established,which is simplified to obtain a controllable shell mass model,while the glide range increase principle is analysed and a ballistic program is written.Then the characteristics of different optimisation algorithms in Isight are introduced,and a parametric optimisation model for the ballistic trajectory of a glide extended range guided cannon is established in the Isight software: the design variables are a sequence of angles of attack varying with time,the constraints are angle of attack and velocity of attack,and the optimisation objective is the maximum range of the glide extended range guided cannon ballistic trajectory.The optimization results,advantages and disadvantages of different algorithms were compared,the angle of attack curves were encrypted and then optimized,and a combined optimization scheme of global optimization with particle swarm algorithm and then secondary optimization with generalized descent gradient method was determined after comparing the results.The results show that the range is maximised at an angle of 62°,and the range is increased by 297.3% by encrypting the rounded angle of attack curve for rudder control,and the minimum range is solved for the same initial angle to satisfy the constraints,which can provide a basis and reference for the parametric design of the glider and subsequent range testing.