SJ-17卫星LHT-100霍尔电推进系统飞行试验工作性能评价

Flight Test Performance Evaluation of LHT-100 Hall Electric Propulsion System on SJ-17 Satellite

为了验证霍尔电推进系统的空间环境适应性、与航天器的相互兼容性、空间工作特性及空间飞行性能与地面数据的差异性,LHT-100霍尔电推进系统搭载SJ-17新技术验证卫星开展了在轨飞行试验,对霍尔电推进系统在轨飞行试验结果进行了详细评价。结果表明:在整个飞行试验期间LHT-100霍尔电推进系统各项工作性能参数符合设计指标要求,其中推力79.5m N,比冲1531s,系统功率低于1.527k W,单次长时间工作8h,在轨系统开关机次数大于24次,在轨累计点火时间超过3028min,在轨飞行试验数据与地面试验数据具有很好的一致性。

In order to obtain the space flight experiment data to verify the space environmental adaptabili- ty, compatibility with the spacecraft, space working characteristic, and the difference of space flight perfor- mance and ground data of hall electric propulsion system, the flight test of LHT-100 hall electric propulsion sys- tem was conducted on SJ- 17 satellite. The flight test results of the LHT- 100 hall electric propulsion system are evaluated in detail. The results indicate that the each operation parameter satisfies the corresponding design re- quirements of the LHT- 100 hall electric propulsion system in the entire flight test period, in which its thrust is 79.5mN, the specific impulse is 1531s, the power is below 1.527kW, the time of single longest ignition is 8 hour, the orbital system switch times are greater than 24, the cumulative ignition time is greater than 3028 min- utes. The flight test data are comparatively consistent with the ground data.