Design and comparison of linear synchronous motor and linear induction motor for electromagnetic aircraft launch system

Abstract

Two basic linear motor designs suitable for an electromagnetic aircraft launch system (EMALS) have been presented in the paper. The motors have been designed with an emphasis on easy assembly and replacement even at the cost of slightly reduced performances. Both, linear permanent magnet synchronous motor (LPMSM) and linear induction motor (LIM) are assembled from modular stator segments which can be quickly and easily replaced. Performances and equivalent circuit parameters of the LPMSM and LIM designs are compared at the end of the paper.