李春林,王贵全,赵振明.航空相机载荷舱热环境分析[J].装备环境工程,2014,11(2):32-37. LI Chun-lin,WANG Gui-quan,ZHAO Zhen-ming.Thermal Environment Analysis of Aerial Camera Pod[J].Equipment Environmental Engineering,2014,11(2):32-37. |
航空相机载荷舱热环境分析 |
Thermal Environment Analysis of Aerial Camera Pod |
投稿时间:2013-12-29 修订日期:2014-01-13 |
DOI:10.7643/issn.1672-9242.2014.02.007 |
中文关键词: 航空相机 载荷舱 热环境 边界条件 |
英文关键词:aerial camera aircraft pod thermal environment boundary condition |
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中文摘要: |
目的详细分析航空相机主体热设计的关键边界条件--航空相机载荷舱的热环境。方法通过载荷舱的热平衡方程,分析影响载荷舱热环境的主要因素,系统地总结适用于工程应用的分析方法。结果对于辐射热环境需考虑大气透明度、地面状况等因素,对流热环境可采用Hilbert提出的经验表达式计算载荷舱背风面的对流换热系数,气动热环境采用Eckert参考焓法估算载荷舱的气动热是合适的,且宜采用电热防冰系统及热空气加热防结露系统。结论该研究结果是航空相机主体热设计的基础,适用于对各类航空相机载荷舱热环境分析和环境控制系统设计。 |
英文摘要: |
ObjectiveTo get the correct boundary conditions for thermal design of aerial camera.MethodsThermal environments of aerial camera pod were analyzed systematically.ResultsAccording to the analysis, calculation methods for radiative heat transfer should consider atmospheric transparency and ground conditions, convective heat transfer especially on the leeward side can be calculated by experience expression developed by Hilbert, aero-dynamic heat transfer can be estimated using the reference enthalpy method developed by Eckert, and ice accretion of outside surfaces and fogging on the view-port window were concluded. In addition, thermal control methods of anti-icing and anti-condensing were also discussed.ConclusionThe analysis results can be used as boundary conditions of aerial camera thermal design and such a research can be used for thermal analysis of other aerial camera pods. |
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