| 双级延伸喷管模态分析 |
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| 引用本文： | 刘勇琼.双级延伸喷管模态分析[J].推进技术,1996,17(6):49-51. |
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| 作者姓名： | 刘勇琼 |
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| 作者单位： | 陕西动力机械研究所 |
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| 摘 要： | 采用有限元法对双级延伸喷管收拢状态进行了模态分析，基础喷管的出口锥和两级延伸锥采用四节点壳元，延伸喷管的展开作动筒采用三维梁单元。最后给出了前六阶振型及对应的频率。
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| 关 键 词： | 固体推进剂火箭发动机，可延伸喷管，模态分析，有限元法 |
MODAL ANALYSIS FOR SOLID ROCKET NOZZLE WITH TWO SEGMENT EXTENDIBLE EXIT CONES |
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| Liu Yongqiong.MODAL ANALYSIS FOR SOLID ROCKET NOZZLE WITH TWO SEGMENT EXTENDIBLE EXIT CONES[J].Journal of Propulsion Technology,1996,17(6):49-51. |
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| Authors: | Liu Yongqiong |
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| Abstract: | Modal analysis for solid rocket nozzle with two segment extendible exit cones (EECs)in stowed condition is presented, in which four-node-shell elements are used for basic cone and EECs, and 3D-beam elements for stretching actuators. The first six orders of mode shapes and their frequencies are also given in the paper. |
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| Keywords: | Solid propellant rocket engine Extension nozzle Modal analysis Finete element method |
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