串联并列增强型轨道炮电磁特性分析  

Analysis on the electromagnetic charateristics of serial-stacked enhanced railguns

作　　者：乔志明[1] 雷彬[1] 邢彦昌 向红军[1] 吕庆敖[1] QIAO Zhi-ming;LEI Bin;XING Yan-chang;XIANG Hong-jun;LV Qing-ao(Department of Ammunition Engineering, Ordnance Engineering College,Shijiazhuang 050003, China)

机构地区：[1]军械工程学院弹药工程系,河北石家庄050003

出　　处：《磁性材料及器件》2017年第2期53-57,67,共6页Journal of Magnetic Materials and Devices

基　　金：国家安全重大基础研究项目(6132270102)

摘　　要：介绍了串联并列增强型轨道炮基本结构与原理,采用有限元分析方法,仿真分析了轨道内电流分布、炮膛磁感应强度、电感梯度值在50Hz半周期正弦电流激励下的特点。结果表明,串联并列增强型轨道炮在幅值为200kA的50Hz半周期正弦波电流作用下,轨道不同位置电流出现幅值和相位上的差异,出现的电流密度最大值为763MA/m^2,轨道边缘电流相位超前于轨道中心位置处;5ms时刻磁感应强度最大值为7.004T,磁感应强度呈中心对称分布;5ms时刻电感梯度值为7.48μH/m,此时可产生电磁发射力为150kN。分析认为串联并列增强型轨道炮具备良好的电磁发射特性,本研究为该轨道炮的设计提供了依据,对实用化轨道炮技术研究具有一定的参考价值。The basic structure and principles of serial-stacked enhanced railguns are introduced.The rail current density distribution,bore magnetic flux density and gradient inductance under a sine current signal are simulated and analyzed with finite element method.It is concluded that for a certain excitation sine current with amplitude of200kA and frequency of50Hz,the biggest current density is763MA/m2,the phase on the edge is more advanced than that in the center of rails.At5ms,the biggest magnetic density is7.004T,and the magnetic density is distributed with center symmetry.The inductance gradient is7.48μH/m at5ms,and the launch force at this time is150kN.It is concluded that the serial-stacked enhanced railguns have good performance in electromagnetic launch.The paper lays a foundation for the design of this type of railguns,which has a certain reference value to the practical railguns technology research.

关 键 词：电磁发射 串联并列增强型轨道炮 电流分布 磁场分布 电感梯度 

分 类 号：TM153[电气工程—电工理论与新技术]