多翼式重接型电磁发射特性的研究分析

Research and Analysis on Launch Performance of Multi-wing Reconnection Electromagnetic Launcher

影响多翼式重接型电磁发射装置加速性能的因素很多,其中优化电容器参数对提高系统的出口速度和能量转换效率尤为关键。电容电压和电容值是两个主要的参数,通过对模型进行有限元仿真分析表明,最大出口速度不一定对应最大能量转换效率,存在一组最佳电容器参数组合使得模型的能量转换效率最高。首先从理论上分析了重接型电磁发射的运行机理,再通过电路方程和运动方程对该模型的运行机理进行数学描述,从而对重接型电磁发射的加速过程有一个更直观的认识,最后结合有限元仿真分析得出同时使得放电电流波形和抛体速度波形相匹配才能得到最大的能量转换效率。

There are many factors influencing the acceleration performance of multi-wing reconnection electromagnetic launcher, in particular, capacitor parameters optimally designed are critical to improve the exit velocity and energy conversion efficiency of the system. Capacitor voltage and capacitance are the two main parameters, the simulation result of model by electromagnetic finite element method indicate that the maximal exit velocity of system does not necessarily correspond to maximum energy conversion efficiency, which exists a set of optimal capacitor parameter combinations makes the model the highest energy conversion efficiency, then there is a more intuitive understanding by the circuit equations and equations of multi-wing reconnection electromagnetic launcher, finally, combined with the finite element simulation analysis, it is concluded that the maximum energy conversion efficiency can be achieved by matching the discharge current waveform and the projectile velocity waveform at the same time.