| 纳米孔材料中辐射热传递的改进——扩散近似法计算 |
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| 引用本文： | 范绪箕.纳米孔材料中辐射热传递的改进——扩散近似法计算[J].航天器工程,2011(2):9-13. |
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| 作者姓名： | 范绪箕 |
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| 作者单位： | 上海交通大学机械与动力工程学院,上海,200030 |
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| 摘 要： | 用可燃的烧蚀材料作为主动的承热层,用不可燃的多孔材料作为被动的隔热层,是当今一次性使用航天器最普通的一种热防护形式,然而对可重复使用的航天器来说,这种防热结构显然不适用.但是如果把烧蚀层改为金属薄壁或多层金属热防护系统,在不增加很多质量的情况下,能保证航天器主结构在允许的温度范围,则可能是一种很好的设计.在此情况下,隔...
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| 关 键 词： | 航天器 纳米孔材料 烧蚀层 多层金属热防护系统 改进的扩散近似法 |
Calculation of Radiation Heat Transfer within Nanoporous Material by Modified Diffusion Approximation Method |
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| FAN Xuji.Calculation of Radiation Heat Transfer within Nanoporous Material by Modified Diffusion Approximation Method[J].Spacecraft Engineering,2011(2):9-13. |
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| Authors: | FAN Xuji |
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| Institution: | FAN Xuji(School of Mechanical and Power Engineering,Shanghai Jiaotong University,Shanghai 200030,China) |
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| Abstract: | Using the flammable charring material as active acceptant layer and the inflammable porous material as passive protection layer is the common practice of thermal protection design of an expendable spacecraft,but this kind of heat protection system is obviously impractical for reusable spacecraft.It might be appropriate if the charring layer is replaced by a metallic layer or multilayer which would keep the temperature of the main structure of the vehicle within an allowable limit without appreciable weight ... |
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| Keywords: | spacecraft nanoporous material charring layer multi-layer metallic heat protection system modified diffusion approximation |
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