基于镓铯对比的场发射电推力器分析与研制
Analysis and Development of Ga-FEEP Based on Comparison of Gallium and Cesium
查看参考文献24篇
文摘
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为解决场发射电推力器由于液态金属推进剂导致的工程化问题,分析并提出以金属镓替代现有推进剂铯的技术方案。基于推进剂镓铯物性对比,分析其对推力与比冲、发射尖端升温、热蒸发、氧化污染等的影响,论证了金属镓的工程化优势及缺点。通过研制金属镓场发射电推力器原理样机,探索并实现了液态金属镓在大气环境中的加注与润湿,在点火试验中获得准线性场发射形貌,表明金属镓是场发射推力器的良好推进剂替代物。 |
其他语种文摘
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A technical proposal of using metal Ga instead of Cs was designed to solve the engineering problems of Field Emission Electric Propulsion (FEEP) caused by liquid metal propellant. On the basis of the comparison of physical property between Ga and Cs,the effects on the thrust,efficiency,specific impulse,emitter tip warming,thermal evaporation,oxidation and pollution were listed to indicate the pros and cons of Ga. By developing the principle prototype of Ga-FEEP,liquid metal Ga was successfully filled and wetted under air condition. Quasi-linear field emission was observed in ignition experiments. The results indicate that Ga is a good propellant substitution of FEEP. |
来源
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推进技术
,2015,36(2):314-320 【核心库】
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DOI
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10.13675/j.cnki.tjjs.2015.02.021
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关键词
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场发射电推力器
;
铯
;
镓
;
润湿
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地址
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中国科学院力学研究所, 国家微重力实验室, 北京, 100190
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语种
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中文 |
文献类型
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研究性论文 |
ISSN
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1001-4055 |
学科
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航天(宇宙航行) |
基金
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中国科学院知识创新工程“空间先进重力测量”项目
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文献收藏号
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CSCD:5349802
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