Static Analysis of Four-rail Electromagnetic Launcher With Different Configurations

Abstract

To evaluate the launch performance and service life of four-rail electromagnetic launcher(FREL), the stress and deformation of three different configurations of armature and orbit were studied, i.e. planar rail-planar armature, convex rail-concave armature, concave rail-convex armature. The physical model of FREL was constructed, and the theoretical calculation formula of force and deformation of armature and rail was put forward. The electromagnetic force and deformation of armature and orbit were analyzed by finite element method. The simulation results show that the force and deformation of rail-armature with different configurations were different. The concave rail can provide large electromagnetic thrust, but its deformation is large. The electromagnetic thrust provided by the planar rail is general. The electromagnetic thrust provided by convex rail is small, but its deformation is small. The experimental results can provide some design ideas and references for meeting different launch requirements.