Analysis and Test on Magnetic Field for Spaceborne Permanent-Magnet Hall Thruster

doi:10.13675/j.cnki. tjjs. 027

Journal of Propulsion Technology ›› 2019, Vol. 40 ›› Issue (12): 2874-2880.DOI: 10.13675/j.cnki. tjjs. 027

• Electric Propulsion and Other Advanced Propulsion • Previous Articles

Analysis and Test on Magnetic Field for Spaceborne Permanent-Magnet Hall Thruster

1.National Key Laboratory of Science and Technology on Vacuum Technology and Physics, Lanzhou Institute of Space Technology and Physics,Lanzhou 730000,China;2.School of Materials Science and Engineering，Beijing University of Aeronautics and Astronautics， Beijing 100191,China

Published:2021-08-15

星载永磁霍尔推力器磁场分析与实验研究

胡竟^1,2,蒋成保²,张天平¹,高俊¹,赵勇¹,张文涛¹

1.兰州空间技术物理研究所真空技术与物理国家级重点实验室;2.北京航空航天大学;材料科学与工程学院，北京;100191

基金资助:
国防装备预先研究项目 ; 国家自然科学基金 61601210 国防装备预先研究项目；国家自然科学基金（61601210）。

Abstract

Abstract: Magnetic field is not only an important factor to evaluate performance level and work characteristics of spaceborne hall thruster, but also acts as an important degree of freedom for its optimization design. Aiming at the application requirement of attitude control of spacecraft for hall thruster, key factors affecting magnetic field configuration of permanent-magnet hall thruster is analyzed. Based on it, by using the equivalent magnetic circuit method and the finite element discretization form, the magnetic field model of hall thruster based on permanent-magnet is established. Then the effectivness and feasibility of the simulation method is validated by comparing with data of foreign similar product. Then the magnetic circuit configuration of hall thruster and its structure parameters of the permanent magnet as well as the permanent-magnet hall thruster prototype which meet the design requirements are obtained. The simulation and experimental results of hall thruster magnetic field are compared and the performances of permanent-magnet hall thruster are tested. Results showed that the experimental results were in basically agreement with the requirement under the rated condition of gas and energy supply and the anode current of the thruster is basically in line with the design requirements. The thrust and specific impulse has reached 3.52mN and 685s， respectively. The design goal of the permanent magnet hall thruster is well realized.

Key words: SmCo permanent magnetic materials;Hall thruster;Magnetic flux path;Magnetic field analysis;Experimental verification

摘要： 磁场是评价星载霍尔推力器性能水平及工作特性的重要因素，也是开展推力器优化设计的重要自由度。针对航天器姿态调整等空间轨道任务对霍尔推力器应用需求，分析了影响永磁霍尔推力器磁感应强度的关键因素。在此基础上，利用磁路等效法，采用有限元离散形式，建立了基于永磁材料的霍尔推力器磁场模型，利用国外同类产品工程数据验证了磁场模型分析方法的可行性和计算结果的正确性，最终获得了设计所需的推力器磁路构型、永磁体结构尺寸及相应的永磁霍尔推力器样机。将永磁霍尔推力器磁场分析结果与实测结果进行对比，并对整机性能进行了实验验证，结果表明：推力器性能实验结果与设计要求相符性较好，额定供气、供电状态下，推力器阳极电流符合设计要求，整机推力达到3.52mN，比冲达到685s，较好地实现了永磁霍尔推力器设计目标。

关键词: 钐钴永磁材料;霍尔推力器;磁通路径;磁场分析;实验验证

HU Jing^1,2,JIANG Cheng-bao²,ZHANG Tian-ping¹,GAO Jun¹,ZHAO Yong¹,ZHANG Wen-tao¹. Analysis and Test on Magnetic Field for Spaceborne Permanent-Magnet Hall Thruster[J]. Journal of Propulsion Technology, 2019, 40(12): 2874-2880.

胡竟,蒋成保,张天平,高俊,赵勇,张文涛. 星载永磁霍尔推力器磁场分析与实验研究[J]. 推进技术, 2019, 40(12): 2874-2880.

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Analysis and Test on Magnetic Field for Spaceborne Permanent-Magnet Hall Thruster

星载永磁霍尔推力器磁场分析与实验研究

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