Abstract With the development of electric space propulsion and all-electric propulsion technologies, the application range of the Hall effect thruster (HET) has gradually expanded. As an important part of the HET, the magnetic field plays a decisive role in its performance. In the development of versatile HETs, it is necessary to comprehensively and thoroughly understand the effects of the magnetic field on the HET discharge characteristics. In this paper, a HEP-100X thruster with multiple degrees of freedom in terms of magnetic field control is used to study the effects of the peak magnetic field position on the thruster discharge characteristics. The results indicate that the peak magnetic field position can effectively control the main ionization zone position and affect the ionization rate. The thruster has the best comprehensive discharge performance when the peak magnetic field position is located near the channel exit. Further analysis reveals that the performance improvement is mainly due to the reduced ion loss on the wall surface and plume divergence half-angle, and the increased current utilization efficiency and voltage utilization efficiency. The HEP-100X shows the above trends under various flow conditions, and the anode efficiency is the highest when the anode flow is 50 sccm. In this condition, the propellant is sufficiently ionized and the ion loss on the wall surface is small. This research provides the necessary support for a comprehensive understanding of the role and significance of the magnetic field in the thruster discharge process, and has important significance for the design optimization of multifunctional Hall thrusters and subsequent research.

中文翻译：

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峰值磁场位置对霍尔推进器放电特性的影响

摘要 随着空间电推进和全电推进技术的发展，霍尔效应推进器（HET）的应用范围逐渐扩大。磁场作为HET的重要组成部分，对其性能起着决定性的作用。在多功能HET的开发中，需要全面透彻地了解磁场对HET放电特性的影响。在本文中，使用在磁场控制方面具有多个自由度的 HEP-100X 推进器来研究峰值磁场位置对推进器放电特性的影响。结果表明，峰值磁场位置可以有效控制主电离区位置，影响电离率。当峰值磁场位置位于通道出口附近时，推进器具有最佳的综合放电性能。进一步分析表明，性能提升主要是由于壁面离子损失和羽流发散半角减少，电流利用效率和电压利用效率提高。HEP-100X在各种流量条件下均表现出上述趋势，阳极流量为50sccm时阳极效率最高。在这种情况下，推进剂被充分电离，壁面上的离子损失很小。本研究为全面认识磁场在推进器放电过程中的作用和意义提供了必要的支持，