期刊信息

  • 刊名： 河北师范大学学报（自然科学版）Journal of Hebei Normal University (Natural Science)
  • 主办： 河北师范大学
  • ISSN： 1000-5854
  • CN： 13-1061/N
  • 中国科技核心期刊
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基于羽流污染的霍尔推进器电荷交换碰撞效应分析

  • 1.华北电力大学 电气与电子工程学院,北京 102206;2.北京应用物理与计算数学研究所,北京 100094
  • DOI： 10.13763/j.cnki.jhebnu.nse.202102015

Analysis on Collision Effects Induced by CEX in Hall Thruster Based on Plume Pollution

摘要/Abstract

摘要：

推进器喷射过程中在尾部形成羽流区,羽流区域发生电荷交换碰撞,产生的电荷交换(charge exchange, CEX)离子与航天器表面相互作用,对在轨运行的航天器产生羽流污染效应.基于 SPT100霍尔推进器建立了完整 的航天器三维仿真模型,在满足准中性假设的条件下,采用PIC-MCC方法,通过模拟和计算航天器表面电势分布、 电荷交换碰撞后的 CEX离子电荷密度分布以及束流离子电荷密度分布规律,分析了 CEX 离子对航天器表面充放 电的影响以及造成的羽流污染影响区域范围,为霍尔推进器系统的进一步优化设计提供理论参考.

Abstract：

In the plume area formed in the tail during the ejection of the thruster, the charge exchange (CEX) ions generated after the charge exchange collision interact with the surface of the spacecraft. During this process, it can easily lead to plume pollution effects on the spacecraft in orbit. For the Hall thruster, a complete three-dimensional model of the spacecraft is established based on the SPT100 thruster. Based on the quasi-neutral assumption, the PIC-MCC method is used for the simulation. The calculation results give the surface potential distribution of the spacecraft and the charge exchange collision including CEX ion distribution and beam ion distribution. The result shows the impact of CEX ions on spacecraft surface charging and discharging as well as the range of the plume pollution influence area. It is useful for the further optimization of the Hall thruster system.

关键词

关键词： 霍尔推进器 ; 羽流污染 ; 电荷交换 ; PIC-MCC ; CEX离子
Key words： Hall thruster； plume contamination； charge exchange； PIC-MCC； CEX ions

参考文献 16

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