Influence of the Decelerator Grid on the Optical Performance of the Ion Thruster
In order to reduce the erosion of the ion thruster accelerator grid, which is caused by charge-exchange (CEX) ions, the 2-grid optical system is added to a decelerator grid to block the reflux CEX ions. The previous experiment and simulation results have proven that the decelerator grid can effectiv...
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| Format: | Article |
| Language: | English |
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Wiley
2019-01-01
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| Series: | International Journal of Aerospace Engineering |
| Online Access: | http://dx.doi.org/10.1155/2019/8916303 |
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| _version_ | 1832550101794422784 |
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| author | Chang Lu Yide Zhao Jie Wan Yuchuan Chu Liang Zheng Yong Cao |
| author_facet | Chang Lu Yide Zhao Jie Wan Yuchuan Chu Liang Zheng Yong Cao |
| author_sort | Chang Lu |
| collection | DOAJ |
| description | In order to reduce the erosion of the ion thruster accelerator grid, which is caused by charge-exchange (CEX) ions, the 2-grid optical system is added to a decelerator grid to block the reflux CEX ions. The previous experiment and simulation results have proven that the decelerator grid can effectively reduce the Pit and Groove erosion. However, the influence of the decelerator grid on the optical performance has not yet been studied well. In this paper, a three-dimensional Immersed Finite Element Method-Particle in Cell-Monte Carlo Collision (IFE-PIC-MCC) algorithm was adopted to investigate the effect of the decelerator grid on the optical performance under crossover and normal circumstances. Results show that the decelerator grid has no effect on the focusing state and the distribution of beam ions. It also has little effect on the CEX ions from the upstream and extraction (center) regions. However, it has great influence on the downstream CEX ions. When the upstream plasma number density is small, the decelerator grid will cause most of the downstream reflux CEX ions to impinge on the accelerator grid aperture barrel, resulting in the significant increase of the Barrel erosion of the accelerator grid. With the increase of the upstream plasma number density, the downstream reflux CEX ions tend to impact the downstream surface of the decelerator grid, which means the decelerator grid begins to block the downstream backflow of CEX ions. |
| format | Article |
| id | doaj-art-cb3d172798554b2e9de653f1fcedf7bc |
| institution | Kabale University |
| issn | 1687-5966 1687-5974 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Aerospace Engineering |
| spelling | doaj-art-cb3d172798554b2e9de653f1fcedf7bc2025-02-03T06:07:46ZengWileyInternational Journal of Aerospace Engineering1687-59661687-59742019-01-01201910.1155/2019/89163038916303Influence of the Decelerator Grid on the Optical Performance of the Ion ThrusterChang Lu0Yide Zhao1Jie Wan2Yuchuan Chu3Liang Zheng4Yong Cao5School of Mechanical Engineering and Automation, Harbin Institute of Technology, Shenzhen, 518055 Shenzhen, ChinaLanzhou Institute of Space Technology Physics, 730000 Lanzhou, ChinaFundamental Space Science Research Center, Harbin Institute of Technology, Harbin 150001, Heilongjiang, ChinaSchool of Mechanical Engineering, Dongguan University of Technology, 523808 Dongguan, ChinaSchool of Science, Harbin Institute of Technology, Shenzhen, 518055 Shenzhen, ChinaSchool of Mechanical Engineering and Automation, Harbin Institute of Technology, Shenzhen, 518055 Shenzhen, ChinaIn order to reduce the erosion of the ion thruster accelerator grid, which is caused by charge-exchange (CEX) ions, the 2-grid optical system is added to a decelerator grid to block the reflux CEX ions. The previous experiment and simulation results have proven that the decelerator grid can effectively reduce the Pit and Groove erosion. However, the influence of the decelerator grid on the optical performance has not yet been studied well. In this paper, a three-dimensional Immersed Finite Element Method-Particle in Cell-Monte Carlo Collision (IFE-PIC-MCC) algorithm was adopted to investigate the effect of the decelerator grid on the optical performance under crossover and normal circumstances. Results show that the decelerator grid has no effect on the focusing state and the distribution of beam ions. It also has little effect on the CEX ions from the upstream and extraction (center) regions. However, it has great influence on the downstream CEX ions. When the upstream plasma number density is small, the decelerator grid will cause most of the downstream reflux CEX ions to impinge on the accelerator grid aperture barrel, resulting in the significant increase of the Barrel erosion of the accelerator grid. With the increase of the upstream plasma number density, the downstream reflux CEX ions tend to impact the downstream surface of the decelerator grid, which means the decelerator grid begins to block the downstream backflow of CEX ions.http://dx.doi.org/10.1155/2019/8916303 |
| spellingShingle | Chang Lu Yide Zhao Jie Wan Yuchuan Chu Liang Zheng Yong Cao Influence of the Decelerator Grid on the Optical Performance of the Ion Thruster International Journal of Aerospace Engineering |
| title | Influence of the Decelerator Grid on the Optical Performance of the Ion Thruster |
| title_full | Influence of the Decelerator Grid on the Optical Performance of the Ion Thruster |
| title_fullStr | Influence of the Decelerator Grid on the Optical Performance of the Ion Thruster |
| title_full_unstemmed | Influence of the Decelerator Grid on the Optical Performance of the Ion Thruster |
| title_short | Influence of the Decelerator Grid on the Optical Performance of the Ion Thruster |
| title_sort | influence of the decelerator grid on the optical performance of the ion thruster |
| url | http://dx.doi.org/10.1155/2019/8916303 |
| work_keys_str_mv | AT changlu influenceofthedeceleratorgridontheopticalperformanceoftheionthruster AT yidezhao influenceofthedeceleratorgridontheopticalperformanceoftheionthruster AT jiewan influenceofthedeceleratorgridontheopticalperformanceoftheionthruster AT yuchuanchu influenceofthedeceleratorgridontheopticalperformanceoftheionthruster AT liangzheng influenceofthedeceleratorgridontheopticalperformanceoftheionthruster AT yongcao influenceofthedeceleratorgridontheopticalperformanceoftheionthruster |