| 摘要: |
| 利用低散射载体，应用电磁仿真手段分析隐身飞机所采用的倾斜双垂尾的电磁散射特点。建立典型倾斜双垂尾模型，采用多层快速多极子算法（MLFMM）进行仿真计算，获得其方位角特性及雷达散射截面（RCS）量级。针对尾翼位置、倾斜角度、边缘后掠角等尾翼关键几何设计参数，建立变参数模型并进行多方案仿真。基于计算结果，分析参数敏感性，获得以上设计参数对RCS的影响规律及具体影响量级，为隐身性能约束下的尾翼设计提供参考。 |
| 关键词: 倾斜双垂尾 隐身设计 电磁散射 L频段 多层快速多极子算法 |
| DOI： |
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| 基金项目: |
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| L-band electromagnetic scattering characteristic analysis of vertical fin |
| ZHANG Yang,AI Junqiang,WANG Jian,ZHANG Weiren |
| () |
| Abstract: |
| The electromagnetic scattering characteristic of vertical fin on stealth aircraft is studied by simulation and use of low scattering supporter.Based on a typical oblique twin-finned model,the scattering characteristic at different azimuth and the radar cross section(RCS) level are obtained by multilevel fast multipole method(MLFMM). Simulation is done on variable parameter models with different geometry parameters,including tail location,angle of inclination and angle of edge. According to simulation result,the relationships between above parameters and RCS are studied by parameter sensitiveness analysis. The conclusion can be used to support vertical fin design that is bound by stealth performance. |
| Key words: vertical fin stealth design electromagnetic scattering L-band multilevel fast multipole method |
