Analysis of minor-caliber railgun arc-suppression methods
During the launching process of the electromagnetic railgun, the generation of muzzle arc has a great influence on the speed and attitude of the armature.In order to determine the electrical parameters of the muzzle arc-suppression device, this paper first establishes an interior ballistic model of minor-caliber electromagnetic railguns based on Demenikand Kushnerarc resistance model, and then sets the resistance parameters of the arc-suppression device according to the calculated minimum arc resistance.Then, according to the interior ballistic model of railgun under the active and passive arc-suppression methods, the differences of the performance of interior ballistic are analyzed.Taking a 20mm railgun as an example, the calculation shows that under the premise of the same structure parameters of power supply and railgun, the armature velocity under the passive arc-suppression method decreases only about 1.86%, and the power utilization efficiency decreases about 0.19%.The end time of discharging is rather close.Therefore, apassive arc-suppression method should be preferred to adopt in a minor-caliber railgun.
Railgun Interior ballistic Arc-suppression Arc resistance
Xiang-rong LIU Fu-qiang MA Jiu-fu WEI Xiao-ya GAO Bao-ming LI
National Key Laboratory of Transient Physics, Nanjing University of Science and Technology, Nanjing, Information Central of China North Industries Group Corp, Beijing, 100089, China
国际会议
2018 International Conference on Defence Technology (2018国际防务技术会议)
北京
英文
77-79
2018-10-21（万方平台首次上网日期，不代表论文的发表时间）