| 微小型涡喷转子结构热工作稳定性分析及试验验证 |
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| 引用本文： | 郑东亚,丁水汀,杜发荣,韩树军,张奇.微小型涡喷转子结构热工作稳定性分析及试验验证[J].航空动力学报,2010,25(6):1340-1345. |
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| 作者姓名： | 郑东亚 丁水汀 杜发荣 韩树军 张奇 |
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| 作者单位： | 北京航空航天大学交通科学与工程学院微小型发动机与分布式能源研究中心,北京,100191 |
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| 摘 要： | 针对某型微小型涡喷发动机高速转子进行结构热工作稳定性分析,采取高精度整体动平衡、热态动平衡检查以及必要的结构阻尼和隔热冷却处理进行试验验证.结果表明:转子不平衡量减小,在合适外阻尼作用下转子持续稳定,后轴承隔热屏的安装使转子支承测点平均温度降低,减少了转子支承的热量输入,减轻了热流对支承刚度以及阻尼的影响,改善了发动机转子结构热工作稳定性,提升了发动机整机稳定性和安全性.
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| 关 键 词： | 微小型涡喷发动机 转子 结构热 工作稳定性 动平衡 阻尼 隔热 |
| 收稿时间： | 2009/10/15 0:00:00 |
| 修稿时间： | 2010/4/13 0:00:00 |
Analysis and experimental verification of structure-thermal running stability for micro turbojet engine rotor |
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| ZHENG Dong-y,DING Shui-ting,DU Fa-rong,HAN Shu-jun and ZHANG Qi.Analysis and experimental verification of structure-thermal running stability for micro turbojet engine rotor[J].Journal of Aerospace Power,2010,25(6):1340-1345. |
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| Authors: | ZHENG Dong-y DING Shui-ting DU Fa-rong HAN Shu-jun and ZHANG Qi |
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| Institution: | Micro-Engine and Distributed Energy System Research Center,School of Transportation Science and Engineering,Beijing University of Aeronautics and Astronautics,Beijing 100191,China;Micro-Engine and Distributed Energy System Research Center,School of Transportation Science and Engineering,Beijing University of Aeronautics and Astronautics,Beijing 100191,China;Micro-Engine and Distributed Energy System Research Center,School of Transportation Science and Engineering,Beijing University of Aeronautics and Astronautics,Beijing 100191,China;Micro-Engine and Distributed Energy System Research Center,School of Transportation Science and Engineering,Beijing University of Aeronautics and Astronautics,Beijing 100191,China;Micro-Engine and Distributed Energy System Research Center,School of Transportation Science and Engineering,Beijing University of Aeronautics and Astronautics,Beijing 100191,China |
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| Abstract: | For the high speed rotor of a type of micro turbojet engine,thermal running stability was analyzed firstly,then high-precision dynamic balancing and overall dynamic balance checking in thermal state,as well as the damping structure and thermal insulation,were experimentally verified.The results show that,when the rotor imbalance is reduced,the rotor is kept steady with proper external damping.The average temperature of measuring points is reduced with the installation of heat shield for back bearing,which reduces the heat input for rotor support and its effect on the bearing stiffness and damping.The methods consequently improve the structure-thermal running stability of rotor,and enhance the stability and safety of the whole engine. |
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| Keywords: | micro turbojet engine rotor structure-thermal running stability balancing damping thermal insulation |
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