| 飞行器表面红外辐射的模型以及红外特征分析(英文) |
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| 引用本文： | 吕建伟.飞行器表面红外辐射的模型以及红外特征分析(英文)[J].中国航空学报,2009,22(5):493-497. |
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| 作者姓名： | 吕建伟 |
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| 作者单位： | School of Jet Propulsion, Beijing University of Aeronautics and Astronautics, Beijing 100191, China |
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| 基金项目： | National Defense Basic Research Project |
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| 摘 要： | 隐身最重要的技术之一是评估飞行器被红外探测器接收到的红外辐射强度。本文针对飞行器表面红外辐射特征计算的问题提出一个方法。首先通过分析飞行器表面气动加热、发动机热部件等主要热源,建立了CFD计算模型并获得了飞行表面的温度场。并结合反向蒙特卡洛方法建立求解飞行器表面复杂几何外形的红外辐射模型。通过数值模拟,比较了飞行器主要部件在水平和侧向上红外辐射强度所占的比重;并针对飞行器主要部件冷却对红外辐射强度的影响效果进行了研究。计算结果表明:在水平方向降低飞行器头部、垂尾、机翼部件表面温度10K能降低红外辐射强度大于8%;而在侧方向降低飞行器头部、垂尾、机翼部件表面温度10K能降低红外辐射强度小于8%。计算结果可为隐身设计提供参考。
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| 关 键 词： | 飞行器蒙皮 温度分布 红外辐射 N-S方程 |
| 收稿时间： | 13 October 2008 |
Aircraft-skin Infrared Radiation Characteristics Modeling and Analysis |
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| Lu Jianwei,Wang Qiang.Aircraft-skin Infrared Radiation Characteristics Modeling and Analysis[J].Chinese Journal of Aeronautics,2009,22(5):493-497. |
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| Authors: | Lu Jianwei Wang Qiang |
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| Institution: | Lu Jianwei,Wang Qiang School of Jet Propulsion,Beijing University of Aeronautics and Astronautics,Beijing 100191,China |
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| Abstract: | One of the most important problems of stealth technology is to evaluate the infrared radiation(IR) level received by IR sensors from fighters to be detected.This article presents a synthetic method for calculating the IR emitted from aircraft-skin.By reckoning the aerodynamic heating and hot engine casing to be the main heat sources of the exposed aircraft-skin,a numerical model of skin temperature distribution is established through computational fluid dynamics(CFD) technique.Based on it,an infrared signat... |
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| Keywords: | aircraft-skin temperature distribution infrared radiation N-S equation |
| 本文献已被 CNKI 万方数据 ScienceDirect 等数据库收录！ |
