摘要
10cm口径离子推力器是我国针对超低轨道监测卫星研制的发散磁场型离子推力器。为了验证该推力器的工作参数是否满足在轨工作的指标要求,进行了性能测试、环境试验测试等一系列试验,试验结果表明:兰州空间技术物理研究所研制的10 cm口径离子推力器三个正交方向的基频分别为601 Hz、583 Hz和736 Hz,满足星载产品基频大于150 Hz的要求。经过1600g量级的冲击试验后,推力器无异常;经过力学试验以及25.5个循环的热真空试验后,推力器工作性能基本无变化;推力器各工况点的束流发散全角均在30°以内,推力偏斜角度不超过1°,20 mN工况点的二价离子占比为14.1%,基于推力电参数测量方法得到的推力值整体误差为0.95%。地面测试结果证明,国产10 cm口径发散磁场离子推力器的各项性能均满足超低轨道监测卫星的任务要求。
10 cm diameter divergent magnetic field ion thruster is developed by Lanzhou Institute of Physics for the ultra-low orbit monitoring satellites.In order to verify whether the working performance of the thruster meets the requirements of in-orbit task,a series of ground test including performance test and environmental test have been carried out.The test results show that the base frequency of three orthogonal directions of the 10 cm diameter ion thruster are 601 Hz,583 Hz and 736 Hz,respectively,and the thruster has no abnormalities after the impact test of 1600g magnitude;after mechanical test and thermal vacuum test of 25.5 cycles,the working performance of the thruster is basically unchanged.The full divergence angle in every work conditions of the thruster are all within 30°,then the maximum thrust deflection angle is less than 1°,and the ratio of double charged ions is 14.1%in 20 mN work condition.The overall error of thrust value based on electrical parameter measurement method is less than 0.95 and all are within the required range.The ground test proved that the performance of the domestic 10 cm diameter divergent magnetic field ion thruster meets the requirements of the ultra-low orbit monitoring satellites.
作者
孙明明
耿海
何非
杨福全
胡竟
丁国宗
SUN Mingming;GENG Hai;HE Fei;YANG Fuquan;HU Jing;DING Guozong(Science and Technology on Vacuum Technology and Physics Laboratory,Lanzhou Institute of Physics,Lanzhou 730000,China)
出处
《真空与低温》
2022年第5期507-513,共7页
Vacuum and Cryogenics
基金
国家自然科学基金(61901202、11702123)
十三五星箭可靠性增长(ZKCP0701)。
关键词
发散磁场
离子推力器
地面试验
工作性能
divergent magnetic field
ion thruster
ground test
working performance
