线圈型电磁发射器的一种屏蔽方案  

A Strategy of Electromagnetic Shielding for Coil Electromagnetic Launchers

作　　者：侯炎磐[1] 刘振祥[1] 杨栋[1] 蒋雅琴[1] 

机构地区：[1]国防科技大学,长沙410073

出　　处：《四川兵工学报》2013年第4期56-59,共4页Journal of Sichuan Ordnance

摘　　要：从磁路的观点出发,分析了封装材料的导磁和导电特性对发射性能的影响,并分析了铁氧体的特性和作为封装材料的可行性与优越性。基于Ansoft电磁场有限元分析软件,建立了线圈型电磁发射器模型,研究了炮管的厚度与结构变化对线圈发射的影响。结果表明:在驱动线圈电流固定的前提下,增大炮管厚度可有效抑制电磁发射器工作时对外的电磁辐射,并可显著提高弹丸的出炮口速度;炮管采用实心封装结构要优于多层封装结构,初步实现了电磁发射过程的电磁屏蔽。With the basic principle of magnetic circuit, the effect of the permeability and conductivity of the coil electromagnetic launcher＇ s shielding material on the launch performance were investigated, and the advantage of using ferrite was validated. The model of the coil electromagnetic launcher was set up in Ansoft Maxwell, and the influence of thickness and the structure of the shield on the launch performance were analyzed. The results show that given the fixed current of the driving coil, the electromagnetic radiation was effectively reduced and the muzzle velocity of the projectile increases by increasing the thickness of the shield. Using of the solid shield was better than using the multi-layer shield. The electromagnetic shielding was basically realized.

关 键 词：电磁屏蔽 线圈型电磁发射器 动态仿真 

分 类 号：TJ303[兵器科学与技术—火炮、自动武器与弹药工程] TM303.1[电气工程—电机]