| MLI碎片防护能力增强措施对隔热性能的影响 |
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| 引用本文： | 韩海鹰,黄家荣,程文龙,李辉.MLI碎片防护能力增强措施对隔热性能的影响[J].宇航学报,2010,31(1). |
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| 作者姓名： | 韩海鹰 黄家荣 程文龙 李辉 |
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| 作者单位： | 1. 中国空间技术研究院总体设计部,北京,100086
2. 中国科学技术大学热科学与能源工程系,合肥,230027 |
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| 摘 要： | 从原理上、实验测试和理论建模三个角度分析了MLI碎片防护增强措施对MLI隔热性能的影响。研究表明,在一定范围内增加MLI单元数、添加增强性材料、增加反射屏之间距离的措施均不会明显改变MLI的隔热性能,真空状态下20单元MLI隔离物的接触率约为40%。由于增强防护性能的措施会影响到MLI的放气性能,应研究改善增强型MLI的放气性能的措施,并在反射屏与增强性材料之间及增强性材料之间添加间隔材料。
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| 关 键 词： | 多层组件 碎片防护能力 隔热性能 试验测试 数值仿真 |
The Influence of Debris Shield Enhancement on Thermal Insulation Performance of MLI |
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| HAN Hai-ying,HUANG Jia-rong,CHENG Wen-long,LI Hui.The Influence of Debris Shield Enhancement on Thermal Insulation Performance of MLI[J].Journal of Astronautics,2010,31(1). |
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| Authors: | HAN Hai-ying HUANG Jia-rong CHENG Wen-long LI Hui |
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| Abstract: | The influence of debris shield enhancements on thermal insulation performance of MLI was studied in theory and by test and simulation. The result showed: (1) increasing of layers and inserting of enhance material and Splitting the Mylar layers into multiple do not change thermal insulation performance of MLI. (2) the touching ratio of spacer in 20 layers Mylar MLI was approximately 0.4 in vacuum condition For reducing the influence of debris shield enhancements on deflation of MLI, spacer should be adding between enhance materials and Mylar layer. |
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| Keywords: | MLI Debris shielding Thermal insulating performance Test Simulation |
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