Arc ignition technology is one of the most feasible strategies for releasing the residual energy of electromagnetic rail launch (EMRL). The muzzle arc characteristic must be considered in the design of arc ignition devices, because it is a main factor affecting the intermediate ballistic trajectory. Based on the theory of magnetohydrodynamics (MHDs), this work has made numerical simulation of muzzle arc and analyzed the temperature field, electromagnetic (EM) field, and flow field of the muzzle arc at different stages. The results show that the temperature is the highest, the EM field is the most intensive, and the flow is the strongest at the initial stage of the muzzle arc. The optimization of arc ignition device is pointed out to be reducing the current transfer time to improve the temperature, EM, and flow environments of the launcher, projectile, and guidance device.

中文翻译：

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电磁轨道发射炮口电弧仿真分析


引弧技术是释放电磁轨道发射（EMRL）残余能量最可行的策略之一。引弧装置的设计必须考虑枪口电弧特性，因为它是影响中间弹道的主要因素。本文基于磁流体动力学（MHDs）理论，对炮口电弧进行了数值模拟，分析了炮口电弧不同阶段的温度场、电磁场和流场。结果表明：枪口弧初始阶段温度最高、电磁场最密集、流动最强。指出引弧装置的优化是减少电流传输时间，改善发射器、弹丸和制导装置的温度、电磁和流动环境。