摘要
介绍一种适用于微纳卫星的新型微电推进方式——微阴极电弧推力器,其利用真空条件下放电电弧烧蚀阴极材料产生较高电离度的高速等离子体喷出产生推力,并利用外加磁场聚焦等离子体以减小羽流扩散角、提高比冲。总结了国外相关机构大量的研究工作,并实现了在轨验证。北京控制工程研究所及其研究团队已攻克了阴极工质均匀烧蚀、低电压放电击穿、磁场设计等关键技术,完成原理样机点火验证工作,并采用实验手段研究磁场对推力器影响;采用PIC/MCC方法开展数值仿真,获得推力器内部及羽流区相关参数分布,对其工作过程及工作机理开展研究,为工程应用奠定了基础。
A new micro electric propulsion,micro-cathode arc thruster(μCAT),is introduced.TheμCAT is based on thevacuum arc process where an arc flows through a medium between two electrodes.The high ionized plasma is produced by thecathode spot ablation and then spell out to produce the thrust.The magnetic field is applied to focus the plasma plume and increasethe specific impulse.A lot of researches on theμCAT have been conducted in the foreign institutes,and theμCAT has been verifiedon orbit in USA.In China,Beijing Institute of Control Engineering(BICE)has made breakthroughs in the key technologiesincluding uniform ablation on the cathode,low voltage discharge,magnetic field design,etc.The influences of magnetic fields onthe thruster are studied by experimental measurement.And the numerical simulations are conducted to obtain the plasma informationin the thruster and plume region and study the work process and mechanism.The research will lay the foundation for engineeringapplications.
作者
耿金越
熊子昌
龙军
沈岩
刘旭辉
陈君
GENG Jinyue;LONG Jun;SHEN Yan;LIU Xuhui;CHEN Jun;XIONG Zichang(Beijing Institute of Control Engineering,Beijing 100094,China;School of Astronautics,Beijing University of Aeronautics and Astronautics,Beijing 100191,China)
出处
《深空探测学报》
2017年第3期212-218,231,共8页
Journal Of Deep Space Exploration
基金
载人航天预研支持项目(050303)
关键词
微阴极电弧推力器
研究进展
试验测试
数值仿真
micro cathode arc thruster
research progress
experimental measure
numerical simulation
作者简介
耿金越（1986– ），男，博士，工程师，主要研究方向：空间电推进技术。通信地址：北京市海淀区友谊路104号北京控制工程研究所（100094）电话：（010）68112260E-mail：jinyuegeng@163.com;沈岩（1978– ），男，博士，研究员，博士生导师，主要研究方向：空间电
推进技术。本文通信作者。
通信地址：北京市海淀区友谊路1 0 4号院北京控制工程研究所
（100094）
电话：（010）68112255
E-mail：shenyan7806@163.com
