脉冲等离子体推力器火花塞的性能实验  

Experiment on spark plug of pulsed plasma thruster

作　　者：侯大立[1] 赵万生[1] 康小明[1] 

机构地区：[1]上海交通大学机械与动力工程学院,上海200030

出　　处：《推进技术》2007年第6期679-682,共4页Journal of Propulsion Technology

摘　　要：点火回路引燃脉冲等离子体推力器的主电容放电,是推力器的关键部分之一,其性能直接影响到推力器运行的成败。实验设计了脉冲等离子体推力器的点火电路和同轴型、钩型、平行电极型三种结构的火花塞。在此基础上,获得了三种火花塞的充电电压、放电电流及点火情况。结果显示,平行电极型的点火效果最佳。最后分析了三种火花塞的点火机理,获得了较好放电性能的火花塞结构形式,为脉冲等离子体推力器的稳定运行提供了重要的依据。Igniter system is one of the key components in pulsed plasma thruster （PPT）. It ignites the main discharge of the capacitor and influences the performance of PPT, A discharge initiation circuit and three different electrode structures of spark plugs such as coaxial, hook, parallel have been designed, Based on this ignition circuit, the charge voltage curves, discharge currents and the ignition effects of these spark plugs were investigated. The result showed the spark plug of parallel electrode got the best ignition effect, At last, the theories of these spark plugs were analyzed and an optimized spark plug structure was obtained. This research will be of benefit for the reliable operation of pulsed plasma thruster,

关 键 词：脉冲等离子体推力器 火花塞 点火器 

分 类 号：V439[航空宇航科学与技术—航空宇航推进理论与工程]