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| 谐振腔隔板对微波等离子推力器特性的影响 |
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唐金兰1,2, 何洪庆1,2, 韩先伟1,2, 毛根旺1,2, 杨涓1,2, 万伟3
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1.西北工业大学航天工程学院;2.陕西西安710072;3.西北工业大学电子工程学院 陕西西安710072
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| 摘要: |
| 为了探索微波等离子推力器谐振腔内电介质隔板对腔内电磁场及谐振频率的影响规律 ,用时域有限差分法 (FDTD)和离散Fourier变换 (DFT)法 ,对内有隔板、谐振模式为TM0 11模的谐振腔电磁场及谐振频率进行了数值分析。计算结果表明 ,隔板的存在不但使腔内轴向电场强度减小 ,而且使腔的谐振频率向低频方向偏移。隔板厚度愈厚 ,引起的轴向电场强度的减小和频偏愈大。这些结论为谐振腔隔板的设计、选材 ,以及谐振腔的设计和调谐提供了理论依据 |
| 关键词: 微波 等离子体发动机 谐振腔 电磁场 共振频率 |
| DOI： |
| 分类号:V439.2 |
| 基金项目:国家“八六三”基金资助项目 (86 3 2 2 5 12 );国防科工委基础研究技术项目 (J14 0 0D0 0 1) |
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| Influence of the clapboard on electromagnetic field and resonant frequency within the resonant cavity of microwave plasma thruster |
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TANG Jin lan,HE Hong qing,HAN Xian wei,MAO Gen wang,YANG Juan,WAN Wei
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1.Coll of Astronautics,Northwestern Polytechnical Univ ,Xi’an 710072,China;2.Dept of Electronic Engineering,Northwestern Polytechnical Univ ,Xi’an
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| Abstract: |
| In order to investigate the influence of the clapboard on electromagnetic field and resonant frequency, the numerical simulation of electromagnetic field and resonant frequency within the resonant cavity was discussed by use of FDTD and DFT Results show that the clapboard not only makes the magnitude of axis electrical field lower but also makes the resonant frequency lower, the more the thickness and ε re of clapboard, the more the affection of electromagnetic field and the excursion of frequency These results can be used for design of the clapboard and adjusting the resonant frequency within the resonant cavity |
| Key words: Microwave Plasma engine Cavity resonator Electromagnetic field Resonant frequency |
