µHT-1推力器工作参数宽范围调节下束流特性实验研究

黄丹; 龙建飞; 成烨; 王嘉彬; 徐禄祥; 杨威

doi:10.13700/j.bh.1001-5965.2023.0406

µHT-1推力器工作参数宽范围调节下束流特性实验研究

doi: 10.13700/j.bh.1001-5965.2023.0406

黄丹^{1, 2, 3, 4, 5},
龙建飞^{1, 2, 3, 4, 5, ,},
成烨^{1, 2, 3, 4, 5},
王嘉彬^{1, 2, 3, 4, 5},
徐禄祥^{1, 2, 3, 4, 5},
杨威⁶

1.
国科大杭州高等研究院基础物理与数学科学学院，杭州 310024
2.
中国科学院国家空间科学中心，北京 100190
3.
中国科学院大学，北京，100049
4.
国科大杭州高等研究院引力波太极实验室（杭州），杭州 310024
5.
国科大杭州高等研究院浙江省引力波精密测量重点实验室，杭州 310024
6.
重庆科技学院电气工程学院，重庆 401331

基金项目:

国家重点研发计划(2021YFC2202700)；湖南省自然科学基金(2021JJ30564)；湖南省教育厅重点项目(19A440)；重庆市教委科学技术研项目(KJZD-K202101506)；国科大杭州高等研究院自主项目(2022ZZ01009)

详细信息

通讯作者:
E-mail：ljf510@163.com

中图分类号: V439.4
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出版历程
- 收稿日期: 2023-06-21
- 录用日期: 2023-10-13
- 网络出版日期: 2024-01-05
- 整期出版日期: 2025-06-30

Experimental study on beam characteristics of µHT-1 thruster under wide range adjustment of operating parameters

HUANG Dan^{1, 2, 3, 4, 5},
LONG Jianfei^{1, 2, 3, 4, 5
, ,},
CHENG Ye^{1, 2, 3, 4, 5},
WANG Jiabin^{1, 2, 3, 4, 5},
XU Luxiang^{1, 2, 3, 4, 5},
YANG Wei⁶

1.
School of Fundamental Physics and Mathematical Sciences，Hangzhou Institute for Advanced Study，UCAS，Hangzhou，310024，Zhejiang，China
2.
National Space Science Centre，Chinese Academy of Sciences，Beijing 100190，China
3.
University of Chinese Academy of Sciences，Beijing 100049，China
4.
Gravitational Wave Universe Taiji Laboratory，Hangzhou Institute for Advanced Study，UCAS，Hangzhou 310024，China
5.
Key Laboratory of Gravitational Wave Precision Measurement of Zhejiang Province，UCAS，Hangzhou 310024，China
6.
School of Electrical Engineering，Chongqing University of Science and Technology，Chongqing 401331 China

Funds:

National Key R&D Program of China (2021YFC2202700); Natural Science Foundation of Hunan Province (2021JJ30564); Key Project of Hunan Provincial Department of Education (19A440); Science and Technology Research Project of Chongqing Municipal Education Commission (KJZD-K202101506); Independent Project of Hangzhou Institute of Advanced Studies, National University of Science and Technology (2022ZZ01009)

More Information

Corresponding author: E-mail：ljf510@163.com

摘要

摘要:
面向空间引力波探测任务需求，设计了瓦级微功率霍尔推力器µHT-1，并对该推力器的束流特性进行实验研究。采用法拉第探针结合三维移动机构进行诊断，获取阳极电压700～1 200 V、阳极工质流量0.1～0.5 sccm宽范围工况下束流离子电流密度分布，并进一步分析总束流值、阳极电流、电流利用率、发散角等参数变化趋势。测试结果表明：µHT-1推力器可在宽范围工况下稳定工作，束流呈现出较好的轴对称分布特性；离子电流密度沿轴向逐渐减小，沿径向双极扩散；阳极电压和阳极工质流量分别通过影响电子平均温度和通道中性原子密度分布的方式，使得电流利用率与发散角呈现出增长的趋势；推力器总束流与阳极工质流量、阳极电压均呈现线性增长特性。
- 微功率霍尔推力器 /
- 束流特性 /
- 离子电流密度 /
- 等离子体诊断 /
- 实验研究
Abstract:
The beam properties of the micro Hall thruster µHT-1, which is intended for space gravitational wave detection, are being experimentally investigated for the first time. A Faraday probe combined with a three-dimensional mobile mechanism was used for diagnosis, and the beam ion current density distribution under a wide range of the anode voltage from 700 to 1200 V and the anode mass flow from 0.1 to 0.5 sccm was obtained. Moreover, the variation trend of total ion beam current, anode current, current utilization efficiency, beam divergence angle and other parameters were further analyzed. According to test data, the spatial distribution of beam ions changes from dense to sparse as one moves away from the axial direction of the µHT-1 thruster. Additionally, the beam becomes more flat due to the diffusion motion of beam ions in space and the binding motion of electrons and ions. The µHT-1 thruster can work stably under a wide range of conditions (anode voltage 700～1200 V, anode mass flow 0.1～0.5 sccm), and the beam current presents a good axis-symmetric distribution. With the increase of anode voltage, the average temperature of electrons can be increased, which further leads to the increase of ionization rate, that is, the current utilization efficiency increases from 53.4% to 67.7%; and the magnetic field restraint ability of high-energy electrons is weakened, affecting the electric field focusing, and the beam divergence angle increases from 41.3 ° to 56.1 °. With the increase of anode mass flow, the neutral atom density distribution in the channel is affected, the current utilization efficiency fluctuates in the range of 57.1 % ～ 66.8 %; and the ion collision zone is transferred to the outlet, making the beam divergence angle increase from 43.4 ° to 56.7 °. The total ion beam current of the thruster changes linearly with anode mass flow and anode voltage, which provides the data basis for the subsequent thrust wide range adjustment and thrust resolution analysis.
- micro Hall thruster /
- beam characteristics /
- ion current density /
- plasma diagnosis /
- experimental study

HTML全文

图 1 µHT-1推力器工作原理及氪工质点火状态

Figure 1. The ignition state of krypton gas of uHT-1 thruster

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图 2 CS-1600微牛级电推进实验平台

Figure 2. The CS-1600 micro Hall electric propulsion experimental platform

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图 3 等离子体诊断系统连接示意图及实物

Figure 3. The schematic diagram of the connection of the plasma diagnostic system and the physical object

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图 4 法拉第筒示意图

Figure 4. Schematic of Faraday cup

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图 5 束流离子电流密度分布随轴向距离变化

Figure 5. The variation curves of ion current density under different axial distances

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图 6 离子电流密度分布随阳极电压变化

Figure 6. The variation curves of ion current density under different anode voltage

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图 7 不同阳极电压下束流和阳极电流变化关系

Figure 7. The curves of anode current and total ion beam current under anode voltage

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图 8 不同阳极电压下电流利用率和束流发散角变化关系

Figure 8. The curves of beam divergence angle and current utilization efficiency under anode voltage

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图 9 离子电流密度分布随阳极工质流量变化

Figure 9. The variation curves of ion current density under different krypton work flow

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图 10 不同阳极工质流量下总束流和阳极电流变化关系

Figure 10. The curves of anode current and total ion beam current under krypton work flow

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图 11 不同阳极工质流量下电流利用率和发散角变化

Figure 11. The curves of beam divergence angle and current utilization efficiency under krypton work flow

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