| 发射率对飞机蒙皮温度及红外辐射特性的影响 |
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| 引用本文： | 冯云松,路远,凌永顺.发射率对飞机蒙皮温度及红外辐射特性的影响[J].红外与激光工程,2013,42(2):294-299. |
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| 作者姓名： | 冯云松 路远 凌永顺 |
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| 作者单位： | 1.脉冲功率激光技术国家重点实验室,安徽 合肥 230037; |
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| 基金项目： | 安徽省红外与低温等离子体重点实验室创新基金(2011B0622) |
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| 摘 要： | 建立了某型飞机的简化几何模型，并设置了飞机的飞行航迹。综合考虑了太阳辐射、地球辐射、大气辐射和气动加热的多种因素，结合飞机蒙皮材料物理特性，针对涂覆三种不同发射率的隐身涂层蒙皮建立了导热物理模型，采用一维导热方程计算了飞机在12:00~12:45时间段飞行时不同发射率的蒙皮表面的温度分布。最后综合考虑了环境辐射的影响，分别对具有不同发射率的飞机蒙皮3~5 m和8~14 m两个波段的红外辐射强度进行了数值计算。结果表明:随着蒙皮发射率的减小，在一定程度上能降低蒙皮在8~14 m波段的红外辐射强度，但是因环境因素的影响，仅仅通过降低蒙皮发射率，飞机红外隐身的效果并不理想。
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| 关 键 词： | 飞机蒙皮 发射率 温度 红外辐射 |
| 收稿时间： | 2012-06-23 |
Influence of surface emissivity on temperature and infrared radiation characteristics of aircraft skin |
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| Feng Yunsong,Lu Yuan,Ling Yongshun.Influence of surface emissivity on temperature and infrared radiation characteristics of aircraft skin[J].Infrared and Laser Engineering,2013,42(2):294-299. |
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| Authors: | Feng Yunsong Lu Yuan Ling Yongshun |
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| Affiliation: | 1.State Key Laboratory of Pulsed Power Laser Technology,Hefei 230037,China;2.Key Lab of IR and Low Temperature Plasma of Anhui Province,Hefei 230037,China |
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| Abstract: | Predigesting geometrical model of a certain aircraft was established, and its flight path was set. Aerodynamic heating and radiation from sun, ground and atmosphere were considered comprehensively, then physical models of heat conduction were founded against three shielding coatings with different emissivity and physical characteristic of stealth aircraft skin. Based on one dimensional heat conduction equation, temperature distributions of skins with different emissivity were calculated between 12:00 pm and 12:45 pm. Finally, influence of environment radiation was considered, the infrared radiant intensity distributions of skins with different emissivity were calculated numerically in 3-5 m and 8-14 m. The result improves that with skin emissivity reducing the infrared radiant intensity of skin diminishes at a certain extent, but due to influence of environment radiation, the effect of aircraft infrared stealth is not ideal only by skin emissivity decreasing. |
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