Analysis and design criteria of a tubular linear induction motor for a possible use in the electro-magnetic aircraft launch system

In this paper a double stator tubular linear induction machine is presented and its performance are discussed for a possible use as a catapult in the electromagnetic acceleration of aircrafts. Based on the use of the Fourier transform in the direction of the motion, a semi analytical model that is able to take into account the end effects due to the finite length of the stators is derived. The effectiveness of the model has been proved by comparison with a numerical analysis based on the Finite Elements Method. The reported results obtained by the two methods shows an excellent agreement that makes the proposed model as a valuable tool for a preliminary design of the device.