| 摘要: |
| 为研究点火前固体推进剂内传热过程,分析了傅里叶定律和修正的傅里叶定律的数学物理意义及其适用范围和判断准则;解释了瞬态传热过程中的热松弛现象,测量了固体推进剂热松弛时间,据此推断推进剂内瞬态传热过程应采用修正的傅里叶定律描述。 |
| 关键词: 固体推进剂 瞬态热分析 热松弛时间+ 傅立叶定律 |
| DOI： |
| 分类号:V512 |
| 基金项目:国家“八六三”高技术项目资助(2003AA765030) |
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| Analysis and measurement of the heat relaxation time of solid propellant |
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ZHONG Tao, WANG Zhong-wei, ZHANG Wei-hua
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Inst.of Aerospace and Material Engineering,National Univ.of Defence Technology,Changsha 410073,China
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| Abstract: |
| To investigate the heat transfer in the solid propellant before ignition,analyzed the meaning of Fourier Law and Modified Fourier Law and pointed out their application field and criterion.Explained the heat relaxation during transient heat transaction.Got the relaxant time of solid propellant by an experiment and made sure that Modified Fourier Law should be applied to the transient heat transaction in solid propellant before ignition. |
| Key words: Solid propellant Transient heat analysis Characteristic thermal time Fourier Law |
