同步感应式电磁线圈推射系统设计研究

Study on the Design of Synchronous Inductive Electromagnetic Coil Propulsion System

电磁推射采用脉冲电流推进,无需化学燃料,对平台无影响,可重复使用,是一种新型推进装置,其中感应型电磁线圈推射是一种重要方式,其通过驱动线圈产生的磁场加速抛体,且抛体与发射管无接触,避免了烧蚀问题,具有较长的使用寿命。文章结合同步感应式电磁线圈推射系统技术特点,针对6kg模拟载荷推射需求,通过ANSYS仿真设计,验证了该系统用于电磁推射的可行性。研究结果表明:(1)9级线圈加速过程中,电枢和载荷受到的最大推力为16.91kN,受到的最大过载为198.87g,满足不超过200g的推射设计需求,载荷以最大速度36.58m/s出膛,满足不低于35m/s的推射初速要求;(2)载荷分离后,电枢受到线圈反向力的作用,在32.2ms后减速到0m/s,开始反向运动,实现电枢回收至发射筒内,便于下次试验重复利用。全系统发射效率13.61%,有效载荷发射效率9.39%。以上研究为6kg模拟载荷低成本高效投送及快速批量部署提供了技术支撑。

The electromagnetic propulsion utilizes pulsed current propulsion,eliminating the need for chemical fuels,rendering no impact on the platform,and ensuring reusability,thus represents a novel propulsion mechanism.Among them,inductive electromagnetic coil propulsion is an important method,which accelerates projectile body through the magnetic field produced by driving coil.The projectile also has no contact with the transmitter,which avoids the problem of ablation and has a longer service life.This article,in conjunction with technical features of the synchronous inductive electromagnetic coil propulsion system,addresses the takeoff requirements of 6 kg simulated loads,validates the feasibility of employing this system for catapult takeoff of the simulate loads though ANSYS simulation design.Research findings are shown as follows:(1)During the 9-stage coil acceleration process,the maximum thrust experienced by the armature and payload is 16.91 kN,with a maximum overload of 198.87 g,and the payload exits the barrel at a maximum velocity of 36.58 m/s,meeting design requirements;(2)After the load separation,the armature experiences a reverse force,decelerating its speed to O m/s after 32.2 ms,and it begins to move in the opposite direction,allowing the armature to be recovered into the launch tube for convenient reuse in subsequent experiments.The overall system launch efficiency is 13.61%,with the ffective payload launch efficiency at 9.39%.The above studies provide technical support for low-cost,efficient delivery and rapid,batch deployment of the 6 kg simulated loads.