摘要
以Xe/Kr等惰性气体为推进工质的电推进技术在越来越多的航天器中得到应用,这些推进系统必须在地面试验设备中进行试验验证。在这些测试设备中,采用专用的氙泵/氪泵相较于常规真空获得设备具有抽速大、极限真空度高等优势。文章通过理论分析及CFD数值仿真的方式对氙泵及氪泵的抽速、热负荷、降温过程进行了研究,讨论了冷板的形状、材料、氙/氪冰的成长等对真空泵性能的影响。同时,建立了测试系统对氙泵/氪泵的抽速进行了测试,理论计算抽速和实测抽速的结果,计算误差低于5%。
Electric propulsion technology using inert gases such as Xe/Kr as propellant has been increasingly applied in spacecraft,and these propulsion systems should undergo experimental verification in ground test facilities.In these facilities,dedicated xenon pumps/krypton pumps demonstrate significant advantages over conventional vacuum generating equipment,including higher pumping speed and superior ultimate vacuum levels.This paper investigates the pumping speed,thermal load,and cooling processes of xenon/krypton pumps through theoretical analysis and CFD numerical simulations,discussing the impacts of cold plate geometry,material selection,and the growth of xenon ice and krypton ice on vacuum pump performance.Additionally,a test system was established to measure the pumping speed of xenon/krypton pumps,revealing a calculation error below 5%between theoretical predictions and experimental measurements.
作者
赵月帅
龚洁
周盈
邵容平
汪志伟
李征
ZHAO Yueshuai;GONG Jie;ZHOU Ying;SHAO Rongping;WANG Zhiwei;LI Zheng(Beijing Institute of Spacecraft Environment Engineering,Beijing 100094,China)
出处
《真空科学与技术学报》
北大核心
2025年第4期308-316,共9页
Chinese Journal of Vacuum Science and Technology
关键词
低温抽气
电推进
氙泵
氪泵
Cryogenic pumping
Electric propulsion
Xenon cryopump
Krypton cryopump
作者简介
联系人:赵月帅,E-mail:zhaoyueshuai@163.com。
