涂 演1,刘向阳2,尹诗明1,张鲲鹏1,陈 川1,张 晗1
(1.上海航天控制技术研究所;2.北京理工大学 宇航学院)
Experimental Investigation on Pulsed Plasma Thruster with New Solid Propellant
TU Yan1, LIU Xiangyang2, YIN Shiming1, ZHANG Kunpeng1, CHEN Chuan1, ZHANG Han1
(1.Shanghai Aerospace Control Technology Institute 2.;2.School of Aerospace Engineering, Beijing Institute of Technology)
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中文摘要: 脉冲等离子体推力器(Pulsed Plasma Thruster,PPT)因其推力小、质量轻、功率低等特点,被认为是微小卫星执行某些推进任务的电推进装置之一,但因效率低下,一直为人所诟病。针对这一现状,将聚四氟乙烯(PTFE)掺入质量配比为2%、5%(6%)、10%和15%的铜和碳,制成掺铜工质(PTFE-Cu)和掺碳工质(PTFE-C)。在3种不同放电能量(1J、1.44J、2.25J)下,测量PPT使用这些工质工作时的电压、电流和脉冲烧蚀质量,并根据结果估算PPT的元冲量、比冲、效率等推进性能。此外,还基于发射光谱理论,对等离子体的种类、特性进行了诊断研究。研究结果表明,烧蚀质量随掺杂量的增加而增加;元冲量随着掺碳量的增加而增加,PTFE-Cu-10%的元冲量最大,为56.47(μN?s);使用PTFE-C-2%和PTFE-Cu-10%时,PPT的性能最好;掺碳和铜在一定程度上促进了PPT的电离过程,进而提高了推力器效率。
中文关键词: 脉冲等离子体推力器;新型固体工质;性能研究;等离子体特性
Abstract:Pulsed plasma thruster(PPT) is regarded as an electric propulsion device for some propulsion mission of micro-spacecraft for its small thrust,light weight and low power. However, it has been criticized for its inefficiency. In view of this situation,adopting polytetrafluoroethylene (PTFE) as the propellant, PTFE is doped with 2, 5(6), 10 and 15 percent C or Cu to make two new types of propellant as the research object. The discharge voltage and current waveform were recorded, the ablation mass weighted under three different discharge energies(1J, 1.44J, 2.25J), and the impulse bit, specific impulse,efficiency of PPT were estimated based on the results. The species, characteristics of plasma were also detected and diagnosed with the emissive optical spectrometer. The research results show that the ablation mass increases with the increase of the doping amount; the impulse bit increases with the increase of the C dopant, and the PTFE-Cu-10% impulse bit is the largest, which is 56.47(μN?s); PTFE-C-2% and PTFE-Cu-10% have the best performance in all C and Cu dopant PTFE specimens, and they promote the ionization process to some extent, thereby improving the thruster efficiency.
keywords: pulsed plasma thruster;new solid propellant; performance research; plasma characteristics
文章编号:20210306     中图分类号:V19    文献标志码:A
涂 演 上海航天控制技术研究所 
刘向阳 北京理工大学 宇航学院 
尹诗明 上海航天控制技术研究所 
张鲲鹏 上海航天控制技术研究所 
陈 川 上海航天控制技术研究所 
张 晗 上海航天控制技术研究所 
Author NameAffiliation
TU Yan Shanghai Aerospace Control Technology Institute 2. 
LIU Xiangyang School of Aerospace Engineering, Beijing Institute of Technology 
YIN Shiming Shanghai Aerospace Control Technology Institute 2. 
ZHANG Kunpeng Shanghai Aerospace Control Technology Institute 2. 
CHEN Chuan Shanghai Aerospace Control Technology Institute 2. 
ZHANG Han Shanghai Aerospace Control Technology Institute 2. 
涂 演,刘向阳,尹诗明,张鲲鹏,陈 川,张 晗.新型固体工质脉冲等离子体推力器试验研究[J].飞控与探测,2021,(3):40-47.