| 制导飞行器红外辐射特性仿真研究 |
| 投稿时间：2024-12-10 修订日期：2024-12-18 点此下载全文 |
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| 中文摘要:隐身技术是未来提升制导飞行器突防能力和综合打击效能的关键方向,红外辐射特性研究是其中的重要研究内容。以AGM-88高速反辐射制导飞行器为例,开展制导飞行器全弹多工况红外辐射特性仿真分析研究,首先采用雷诺平均湍流模型开展流场仿真计算,然后采用离散传递法进行红外辐射场仿真,比较研究了不同来流条件、红外波段以及探测角度下的红外辐射特性。研究结果表明,来流马赫数对弹体温度和红外辐射强度具有重要影响,随着来流马赫数的增加,红外辐射强度显著增加；红外辐射亮度最大的部件为发动机区域形成的高温、低压、低速回流区,弹体端头部、弹翼和舵面区域压力和温度相对也相对较高,红外辐射亮度相对较大；红外辐射强度受探测角度差异巨大,弹体头部和尾部观测方向的红外辐射强度仅约为峰值的5%左右；8~14μm波段的红外辐射强于3~5μm波段,这种差异随着来流马赫数的增加逐渐减小；大气吸收对红外辐射强度具有明显的衰减作用。 |
| 中文关键词:制导飞行器 隐身技术 目标特性 红外辐射特性 离散传递法 |
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| Simulation Research on Infrared RadiationCharacteristics of Guided Aricraft |
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| Abstract:Stealth technology is one of the most important directions to improve penetration capability and synthesize strike efficiency of guided aircrafts, where research on infrared radiation characteristics serves key position. This study takes AGM-88 high speed anti-radiation aircraft for example, carries out research on infrared radiation characteristics of tactic aircraft under multi work conditions. It adopts Reynold average turbulent model for fluid field simulation, and discrete transfer method for infrared radiation field simulation, then compares infrared radiation characteristics under different flow conditions, wave lengths, and detection angles. The results indicate that Mach has great impact on temperature and infrared radiation strength, where infrared radiation strength increases rapidly with the increase of Mach. Besides, maximum infrared radiation brightness appears at engine zone, coming with high temperature, low pressure, low velocity, and reverse flow, and head cone, wing, and rudder also gets relatively high pressure and temperature, and contributes infrared radiation. Thirdly, detection angles shows important influence on infrared radiation strength, where those from the head and tail directions of the aircraft takes just about 5% of the peak. Fourthly, infrared radiation under 8~14μm band is much intensive than that under 3~5μm, and the difference decreases with the increase of Mach. Finally, atmospheric absorption has significant attenuation influence on infrared radiation. |
| keywords:guided aircraft stealth technology target characteristics infrared radiation characteristics discrete transfer method |
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