单级线圈发射器中电枢的受力分析

为提高发射效率，对单级线圈发射器中大质量电枢的受力情况进行分析。基于大质量电枢在线圈中的运 动规律，利用仿真软件建立单级线圈发射模型，对不同质量电枢的运动特性和电枢以不同初速度进入线圈的受力情 况进行仿真并总结其规律，并将弹射线圈使用与否2 种情况下的效率进行对比。结果表明：在放电回路参数相同的 条件下，电枢质量增加，电磁力反向时间推迟；电枢进入线圈的初速度增加，电磁力反向时间提前。加设弹射线圈 的模型能提高发射效率。

Force Analysis of Armature in Single-stage Coil Launcher

In order to improve the launching efficiency, the force of armature with large weight in single-stage coil launcher is analyzed. Based on the motion law of large weight armature in coil, a single-stage coil launching model is established by using simulation software. The motion characteristics of armature with different weights and the force of armature entering coil at different initial speeds are simulated and summarized. The efficiency of the 2 cases is compared. The results show that under the same discharge circuit parameters, the armature mass increases, the reverse time of electromagnetic force delays, the initial speed of armature entering the coil increases, and the reverse time of electromagnetic force advances. The launching efficiency can be improved by adding the model of bomb-ray circle.