| 球面收敛二元喷管电磁散射特性 |
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| 引用本文： | 杨胜男,尚守堂,邵万仁,邓洪伟.球面收敛二元喷管电磁散射特性[J].航空动力学报,2015,30(12):2983-2991. |
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| 作者姓名： | 杨胜男 尚守堂 邵万仁 邓洪伟 |
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| 作者单位： | 中国航空工业集团公司沈阳发动机设计研究所, 沈阳 110015,中国航空工业集团公司沈阳发动机设计研究所, 沈阳 110015,中国航空工业集团公司沈阳发动机设计研究所, 沈阳 110015,中国航空工业集团公司沈阳发动机设计研究所, 沈阳 110015 |
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| 基金项目： | 航空科学基金(2011ZA06001) |
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| 摘 要： | 采用迭代物理光学法和等效边缘电磁流法,对球面收敛二元喷管电磁散射特性进行研究.计算分析了该喷管电磁散射的构成及散射机理、散射场的空间分布特性、散射的频率特性,分别计算和对比分析了电磁波在俯仰平面和偏航平面入射时喷管在中间和最大两种状态下的电磁散射情况.研究表明该喷管在垂直极化下边缘绕射场对散射总场的贡献在大角度下体现.电磁波入射频率越高,该喷管后向散射越强烈,雷达散射截面分布对姿态角度越敏感.
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| 关 键 词： | 雷达散射截面 球面收敛二元喷管 迭代物理光学法 等效边缘电磁流法 雷达隐身 |
| 收稿时间： | 2014/4/27 0:00:00 |
Electromagnetic scattering characteristics for spherical converging flap nozzle |
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| YANG Sheng-nan,SHANG Shou-tang,SHAO Wan-ren and DENG Hong-wei.Electromagnetic scattering characteristics for spherical converging flap nozzle[J].Journal of Aerospace Power,2015,30(12):2983-2991. |
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| Authors: | YANG Sheng-nan SHANG Shou-tang SHAO Wan-ren and DENG Hong-wei |
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| Institution: | Shenyang Engine Design and Research Institute, Aviation Industry Corporation of China, Shenyang 110015, China,Shenyang Engine Design and Research Institute, Aviation Industry Corporation of China, Shenyang 110015, China,Shenyang Engine Design and Research Institute, Aviation Industry Corporation of China, Shenyang 110015, China and Shenyang Engine Design and Research Institute, Aviation Industry Corporation of China, Shenyang 110015, China |
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| Abstract: | The electromagnetic scattering characteristics for spherical converging flap nozzle (SCFN) were studied using the methods of iterative physical optics and equivalent edge current. A study on the structure and scattering mechanism of electromagnetic scattering,spatial distribution characteristic of scattering field, and frequency characteristics of scattering for SCFN was presented. The scattering characteristics of electromagnetic wave for SCFN in middle state and maximum state on yaw plane and pitch plane were separately calculated and analyzed. Studies show that the edge diffraction field contributes to the whole scattering field in large angles under vertical polarization. The more frequently electromagnetic wave incidence enters, the more intense the nozzle backscatters, and the more sensitive the radar cross section distribution is to the attitude angle. |
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| Keywords: | radar cross section(RCS) spherical converging flap nozzle(SCFN) iterative physical optics(IPO) equivalent edge currents(EEC) radar stealth |
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