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为了实现理想磁场,对LHT100推力器磁场工程设计的关键参数进行了系统研究。基于经典磁场理论,采用有限元分析方法,分别从线圈安匝数、磁极间距和磁屏三个关键参数开展仿真研究,得到各关键参数与LHT100推力器磁场形貌及强度的相互关系。研究结果表明:当内外线圈安匝数分别为800A和400A;磁极间距为27mm,采用磁屏设计时可获得理想磁场,对该理想磁场进行测试验证,最大误差小于5%。
In order to achieve the ideal magnetic field, the key parameters of LHT100 thruster magnetic field engineering design were systematically studied. Based on the classical theory of magnetic field, the finite element analysis method was used to simulate the three key parameters of coil ampere-turns, magnetic pole spacing and magnetic shield respectively. The relationship between the key parameters and the magnetic field morphology and strength of LHT100 thruster was obtained. The results show that when the ampere-turns of the inner and outer coils are 800A and 400A respectively and the pitch of the magnetic poles is 27mm, the ideal magnetic field can be obtained when the magnetic screen is designed. The ideal magnetic field is tested and verified with the maximum error of less than 5%.