摘要
某试验卫星搭载2台10 cm口径可变推力离子推力器以交替工作的模式开展了300 km以下近地轨道空间环境下的宽范围变推力能力、长期工作可靠性及空间环境适应性的在轨飞行验证。基于离子推力器的变推力调节工作原理与在轨验证策略,对10 cm口径可变推力离子推力器在轨飞行数据进行了分析评价,并与地面测试数据进行了比对。结果表明:10 cm口径可变推力离子推力器的技术方案合理、可行,宽范围精细化连续变推力的调节措施正确、有效,推力器在轨工作参数与地面试验数据的一致性良好,性能参数及其变化规律符合设计要求,其在98.3~585.3 W功率内可实现1.39~20.05 mN的变推力调节,比冲控制在547~3 056 s内,15 mN及20 mN工作点的推力闭环精度均稳定在1%以内。截至2025年6月,离子推力器入轨飞行近两年时间,已累计点火工作约5 800 h,开关机超过10~4次,工作性能稳定,参数状态正常,无异常衰退迹象。
An experimental satellite carried two 10 cm aperture variable-thrust ion thrusters,which conducted on-orbit flight validation in alternating operation mode in the space environment of a near-Earth orbit below 300 km.The validation encompassed wide-range thrust variation capability,long-term operational reliability,and adaptation to the space environment.Based on the thrust adjustment principles and on-orbit validation strategy of ion electric propulsion systems,the flight data of the 10 cm aperture variable-thrust ion thruster in orbit were analyzed and compared with ground test data.Result shows that the variable-thrust ion thruster demonstrates a rational and feasible technical approach.Its wide-range,precision continuous thrust adjustment methodology proves correct and effective.Benchmarking reveals high consistency between on-orbit operational parameters and ground test data,with performance metrics and variation patterns conforming to design specifications.Within a power range of 98.3~585.3 W,the thruster achieves thrust modulation from 1.39 to 20.05 mN while maintaining specific impulse between 547~3056 s.And the thrust closed-loop accuracy at both the 15 mN and 20 mN operating points remains stable within 1%.As of June 2025,the ion thruster has accumulated nearly two years of on-orbit operation,with approximately 5800 firing hours and over 104 start-stop cycles.It maintains stable performance and nominal parameters,showing no discernible signs of degradation.
作者
胡竟
杨福全
王成飞
谷增杰
陈娟娟
郭德洲
张欣怡
贾艳辉
吴辰宸
耿海
HU Jing;YANG Fuquan;WANG Chengfei;GU Zengjie;CHEN Juanjuan;GUO Dezhou;ZHANG Xinyi;JIA Yanhui;WU Chenchen;GENG Hai(Science and Technology on Vacuum Technology and Physics Laboratory,Lanzhou Institute of Physics,Lanzhou 730000,China;Key Laboratory of Space Electric Propulsion of Gansu,Lanzhou 730000,China;School of Aerospace Science and Technology,Xidian University,Xi’an 710071,China)
出处
《推进技术》
北大核心
2025年第12期183-191,共9页
Journal of Propulsion Technology
基金
国防装备预先研究
国家自然科学基金(62371213)
国家重点研发计划(2021YFC2202704)。
关键词
试验卫星
变推力
离子推力器
在轨飞行
天地差异
Experimental satellite
Variable-thrust
Ion thruster
On-orbit operation
Space-ground correlation
