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Low-noise and fast-response variable cold gas micro-thruster developed for Taiji program

文献类型：期刊论文

作者Yang, Chao3; He, Jianwu3; Zhang, Chu3; Duan, Li2,3; Kang, Qi2,3; Yang, Shuang1
刊名CHINESE JOURNAL OF AERONAUTICS
出版日期2025-11-01
卷号38期号:11页码:12
关键词Cold gas micro-thruster Flow control Piezoelectric proportional valve Space-based gravitational wave detection Thrust measurement
ISSN号1000-9361
DOI10.1016/j.cja.2025.103600
通讯作者He, Jianwu(javehe@imech.ac.cn) ; Kang, Qi(kq@imech.ac.cn)
英文摘要The Taiji program is focused on achieving space-based gravitational wave detection in the frequency range of 0.1 mHz-1 Hz. To achieve drag-free control, Taiji satellites must be equipped with micro-thrusters that satisfy stringent requirements, including a continuously adjustable thrust, thrust resolution of 0.1 mN, thrust noise of 0.1 lN Hz 0.5 and response time of less than 100 ms. This paper presents the progress of a variable cold gas micro-thruster being developed for the Taiji program. A series of technologies such as a bidirectional piezoelectric drive, spherical valve core, conical nozzle seal, miniature gas chamber, high thruster integration, combined digital and analogue communication and high-frequency closed-loop thrust control were employed to achieve engineering prototypes of a low-noise and fast-response micro-thruster. Ground performance tests indicate that the micro-thruster achieved a minimum thrust of close to 1.1 nN, a thrust resolution of 0.05 lN and a maximum specific impulse of 69.1 s using nitrogen gas as the working fluid. The thrust noise was less than 0.1 lN Hz 0.5 in the frequency band of 10 mHz-1 Hz, and the thrust response time was 140 ms. The control parameters were further optimised to achieve a flow response time of 50 ms. The results indicate that the developed micro-thruster essentially met the performance requirements for drag-free control to facilitate space-based gravitational wave detection. (c) 2025 The Author(s). Published by Elsevier Ltd on behalf of Chinese Society of Aeronautics and Astronautics. This is an open access article under the CC BY license (http://creativecommons.org/licenses/
资助项目National Key Research and Development Program of China[2021YFC2202800] ; National Key Research and Development Program of China[2021YFC2202604] ; Opening Project of the Key Laboratory of Microgravity of the Chinese Academy of Sciences[NML202401] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences[2023022] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA1502110105]
WOS研究方向Engineering
语种英语
WOS记录号WOS:001575061900001
资助机构National Key Research and Development Program of China ; Opening Project of the Key Laboratory of Microgravity of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences
源URL[http://dspace.imech.ac.cn/handle/311007/104053]  
专题力学研究所_国家微重力实验室
通讯作者He, Jianwu; Kang, Qi
作者单位1.Chinese Acad Sci, Natl Space Sci Ctr, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Inst Mech, Key Lab Micrograv, Beijing 100190, Peoples R China
推荐引用方式
GB/T 7714		 Yang, Chao,He, Jianwu,Zhang, Chu,et al. Low-noise and fast-response variable cold gas micro-thruster developed for Taiji program[J]. CHINESE JOURNAL OF AERONAUTICS,2025,38(11):12.
APA Yang, Chao,He, Jianwu,Zhang, Chu,Duan, Li,Kang, Qi,&Yang, Shuang.(2025).Low-noise and fast-response variable cold gas micro-thruster developed for Taiji program.CHINESE JOURNAL OF AERONAUTICS,38(11),12.
MLA Yang, Chao,et al."Low-noise and fast-response variable cold gas micro-thruster developed for Taiji program".CHINESE JOURNAL OF AERONAUTICS 38.11(2025):12.

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来源：力学研究所

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