Design Of A Missile Electromagnetic Catapult Based On The Principle Of Linear Motor

Electromagnetic catapult is a new launch technology with stable thrust,uniform acceleration,good controllability,high efficiency and good concealing performance.Electromagnetic catapult technology is applied to the missile ejection in the article,which enhances the combat effectiveness of the missile launch system and provides a reference for the study of electromagnetic missile launch.Research work was started according to the performance requirements of a missile electromagnetic catapult.In the overall scheme design,the scheme of the missile electromagnetic catapult was put forward,and its basic structure was composed of linear motor and missile launcher.As the core component of electromagnetic launcher,the linear motor was designed in three aspects including principle,structure and electromagnetism.According to the electromagnetic design method,the main dimension,primary winding and slot shape of the linear motor were calculated and determined.A piecewise design scheme for reducing the edge effect of linear motor was studied.Then this article analyzed the linear motor electromagnetic field using Ansoft based on the principle of two-dimensional magnetic field transient analysis.The results verified the feasibility of the design of linear induction motor for missile electromagnetic catapults and shown the influence of structural parameters on thrust.According to the overall scheme of the vehicle electromagnetic catapult and the thrust characteristics of the linear motor,the dynamic model of the missile ejection was established.This article used the nonlinear dynamic method to simulate the ejection process of the missile and got the movement characteristics of the missile.Finally,the emission stability of the missile ejection device under the action of electromagnetic recoil and braking conterforce was explored.