影响轨道发射器进一步发展的主要技术障碍之一是电枢和轨道之间的放电烧蚀。文中从简单轨道发射器的结构组成和烧蚀形成机理入手,分析了引起简单轨道发射器烧蚀的原因,提出了通过改变轨道发射器的结构来抑制导轨烧蚀的方法,设计了一种多层轨道-电枢结构的轨道发射器方案,并对其进行了ANSYS有限元模拟。模拟结果显示该方案能够较好的解决电磁轨道发射过程的烧蚀问题。

Discharge and ablation between the rails and the armature with hypervelocity remains a main obstacle in the field of electromagnetic rail launching. The structure of a simple rail launcher was introduced and its mechanics of discharge and ablation was analyzed. The reason is that the concentrated current in the back corner of the rails-armature structure leads to too much Ohmic heat. On considering the melting and erosion, we suggest a method that the structure of rail launcher could be modified to solve the problem of ablation. The proposal is about a multi-layer of rail-armature structure. The results of finite element analysis revealed that the new structure launcher is feasible and effective to control the ablation.