| 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。 |
| 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 |
| DOI： |
| 分类号:V435.23 |
| 基金项目: |
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| MODAL ANALYSIS FOR SOLID ROCKET NOZZLE WITH TWO SEGMENT EXTENDIBLE EXIT CONES |
|
Liu Yongqiong
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Shaanxi Iust. of Power Machinery, Xi’an, 710025
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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. |
| Key words: Solid propellant rocket engine Extension nozzle Modal analysis Finete element method |
