空间电推进地面综合测试评价技术研究

GROUND INTEGRATED TEST AND EVALUATION TECHNOLOGY FOR SPACE ELECTRIC PROPULSION

推力/比冲、羽流效应及电磁兼容是空间电推进产品测试评价的主要内容。综述了光学测量法、双钟摆法、扭秤法、三丝扭摆法及电磁补偿法等方法,并提出改进的推力测量方法。对羽流等离子体基本参数、羽流离子电流密度分布、羽流离子能量分布、羽流双电荷离子比例、羽流溅射物沉积污染等羽流评价技术,经方案对比提出了现阶段最适宜的测试方法,分别是朗缪尔探针、法拉第探针、RPA、E×B探针、QCM等方法。电磁兼容性测试领域,根据电推进的工作特点,提出了基于透波副舱的实验方法。为空间电推进地面综合测试评价提供方法和测试手段。

Space thrust and specific impulse,plume effects,electromagnetic compatibility are the key performances of an electric propulsion system in space applications. This paper summarizes the micro-thrust measurement methods,such as optical measurement,doubles bell pendulum method,torsion scale method,three wire torsion pendulum method and electromagnetic compensation method. Then the modified thrust measurement method is proposed. For measuring the basic parameters of plume,ion current density distribution,ion energy distribution,doubly charged ions radio,plume sputtering deposition and so on,the corresponding measurement methods,the Langmuir probe,Faraday probe,RPA,E × B probe,QCM and other corresponding measurement methods,can be applied. In the field of electromagnetic compatibility test,according to the working characteristics of electric propulsion,an experimental method based on transdermal wave sub-chamber is proposed. In a word,the method for the ground evaluation of space electric is provided.