| 发汗冷却层板结构的受热皱损分析 |
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| 引用本文： | 刘伟强,孙文胜,张峰,张擘毅.发汗冷却层板结构的受热皱损分析[J].航空学报,2006,27(2):241-244. |
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| 作者姓名： | 刘伟强 孙文胜 张峰 张擘毅 |
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| 作者单位： | 国防科技大学 航天与材料工程学院, 湖南 长沙 410073 |
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| 摘 要： | 针对液体火箭发动机层板发汗冷却推力室的结构层板可能出现受热皱损的问题,采用三边简支、一边自由的矩形薄板假设,对结构层板的扩散流动区进行稳定性问题的讨论。分析了典型结构的层板发汗冷却推力室由热应力引起的变形,获得了结构层板发汗缝隙宽度和层板厚度之间的关系,并通过算例说明了避免层板受热皱损的设计计算方法。
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| 关 键 词： | 发汗冷却 层板结构 热皱损 火箭发动机 热应力 |
| 文章编号： | 1000-6893(2006)02-0241-04 |
| 收稿时间： | 2004-10-22 |
| 修稿时间： | 2004年10月22 |
Analytical Estimation for the Thermal Wrinkling in the Formed Platelet of Transpiration Cooling |
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| LIU Wei-qiang,SUN Wen-sheng,ZHANG Feng,ZHANG Bo-yi.Analytical Estimation for the Thermal Wrinkling in the Formed Platelet of Transpiration Cooling[J].Acta Aeronautica et Astronautica Sinica,2006,27(2):241-244. |
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| Authors: | LIU Wei-qiang SUN Wen-sheng ZHANG Feng ZHANG Bo-yi |
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| Institution: | College of Astronautics and Material Engineering, National University of Defense Technology, Changsha 410073, China |
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| Abstract: | Heat transfer possibly results in the thermal wrinkling of transpiration cooling platelet for the liquid rocket engine's thrust chamber. A rectangular sheet which has 3 freely-supported sides and 1 free side is assumed. Stability in the diffusion flow field of the formed platelet is discussed. Deformation caused by thermal stress in the typical structure of the platelet thrust chamber is analyzed. The relationship formula between the width of the transpiration gap and the thickness of the platelet is obtained. Design and calculation method to avoid thermal wrinkling of the platelet is given by a case study. |
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| Keywords: | transpiration cooling formed platelet thermal wrinkling rocket engine thermal stress |
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