以减小初始扰动为目标的火箭弹定心部优化设计

Optimal Design for Rocket Bourrelets Aiming at Minimizing Initial Disturbances

为研究火箭弹定心部结构参数对火箭弹初始扰动的影响,建立了火箭弹发射过程中弹轨相互作用的动力学仿真模型。以减小初始扰动为目标,以弹轨不发生碰撞为约束,开展定心部结构参数的动力学仿真优化分析,得到了定心部的结构优化设计参数。优化结果表明,定心部的宽度对初始扰动影响较大,定心部结构参数的优化可在较大程度上减小火箭弹的初始扰动。优化方法及结果可为火箭弹定心部的设计提供参考。

In order to study the influences of rocket bourrelets structural parameters on the rocket initial disturbances,a dynamic simulation model of the interaction between rocket and rail was established.Taking minimizing initial disturbances as goals,and nonoccurrence of impact between rocket body and rail as constraint,launch dynamic simulation and optimal analysis of the rocket bourrelets were performed.The optimal design parameters of the rocket bourrelets were obtained.The optimal results show that the rocket bourrelets width has a large influence on initial disturbances,and the optimization of the bourrelets structural parameters may minimize initial disturbances of rocket to a great extent.The optimal method and results will provide reference to rocket bourrelet design.