Study on the Lumped Evaluation Model of Sliding Electrical Contact Performance of Railgun

The sliding electrical contact performance of electromagnetic railgun is the main factor affecting the launch accuracy, launch efficiency, and working life of electromagnetic railguns. The research on the evaluation of sliding electrical contact performance of electromagnetic railgun is crucial for the research of electromagnetic railgun theory and engineering design. In this paper, a lumped evaluation model based on the normalized index of the resistance heat loss and frictional resistance loss of the electromagnetic railgun armature-rail interface is established, and the actual launch test of a certain launcher is evaluated to verify the lumped evaluation model. It can provide a reference for the theoretical and engineering application research of the sliding electromagnetic contact performance of the subsequent electromagnetic railgun.