本文基于折翼式无人机的特点与弹射需求，对三相异步感应式电磁线圈弹射（AICEML）进行了原理介绍与数学建模，然后完成了电磁弹射系统方案与结构设计，通过Ansoft软件建立了5段三相异步感应式电磁线圈弹射装置的有限元模型，并进行了电磁场和力学仿真分析。仿真分析结果表明：该系统可以使无人机载荷弹射速度达到31.03m/s，最大过载为93.7g，发射效率达到17.6%，满足发射初速不低于30m/s，过载不超过100g的设计需求。

In this paper, the principle of a 3-phases asynchronous induction coilgun electromagnetic launcher(AICEML) was introduced and its mathematical modeling was established based on the characteristics and launching requirements of folding-wing unmanned aerial vehicle(UAV), then the design for the scheme and structure of electromagnetic launch system was completed. Finally, the simulation analysis of electromagnetic field and mechanics were carried out in Ansoft, before which a finite element model of 3-phases AICEML system was built. The results show that, the system can make the speed of UAV reaching 31.03m/s, with the maximum overload 93.7g, and launch efficiency 17.6%, which meet the requirements of the launch speed more than 30 m/s and the overload less than 100g.