| 离子推力器双阶栅极系统引出性能研究 |
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| 引用本文： | 鹿畅,曹勇,夏广庆.离子推力器双阶栅极系统引出性能研究[J].推进技术,2022,43(3):384-390. |
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| 作者姓名： | 鹿畅 曹勇 夏广庆 |
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| 作者单位： | 大连理工大学 工业装备结构分析国家重点实验室,哈尔滨工业大学深圳;哈尔滨工业大学深圳,大连理工大学 工业装备结构分析国家重点实验室 |
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| 基金项目： | 国家自然科学基金(11675040, 11702319)；中央高校基本科研业务费专项资金(DUT19LAB46, DUT20LAB203)；辽宁省重点研发计划(2020JH2/10500003);国家重点研发计划（2020YFC2201104, 2020YFC2201103）；天琴计划教育部重点实验室（筹）开放基金（TQRF-2020-2.5） |
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| 摘 要： | 针对基于最优导流工况设计的双阶四栅栅极系统在多工况下的引出性能,采用浸入式有限元和粒子云算法(IFE-PIC)对其聚焦和引出过程进行了研究.研究结果表明,相较于相同聚焦电压下的传统栅极系统,基于最优导流工况设计的双阶四栅栅极系统由过聚焦进入正常聚焦的拐点右移,栅极系统的引出性能变差.因此建议双阶栅极离子推力器在设计时使...
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| 关 键 词： | 电推进 离子推力器 等离子体 引出性能 粒子云算法 |
| 收稿时间： | 2020/10/20 0:00:00 |
| 修稿时间： | 2022/1/25 0:00:00 |
Extraction Performance of Dual-Stage Grid of Ion Thruster |
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| LU Chang,CAO Yong,XIA Guang-qing.Extraction Performance of Dual-Stage Grid of Ion Thruster[J].Journal of Propulsion Technology,2022,43(3):384-390. |
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| Authors: | LU Chang CAO Yong XIA Guang-qing |
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| Institution: | State Key Laboratory of Structural Analysis for Industrial Equipment,Dalian University of technology,,State Key Laboratory of Structural Analysis for Industrial Equipment,Dalian University of technology |
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| Abstract: | Aiming at the extraction performance of the Dual-Stage 4-grid under multiple operating conditions, this paper studies its focusing and extraction process based on the immersed finite element and Particle-in-cell method (IFE-PIC). The results show that, compared with the conventional grid, the inflection point of over-focus to normal-focus of the Dual-Stage 4-grid moves right, which means its extraction performance becomes worse. Therefore, it is suggested that a small diameter discharge chamber should be used in the design of the Dual-Stage grid ion thruster to improve the plasma density upstream of the grid, so as to make the Dual-Stage 4-grid system in normal focusing state. Furthermore, more attention should be paid to the design of Dual-Stage accelerator grid, such as increasing its aperture diameter, so as to avoid or reduce the direct impact of beam ions. |
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| Keywords: | Electric propulsion Dual-Stage grid Ion thruster IFE-PIC |
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