| 摘要: |
| 全机隐身特性是先进无人机（Unmanned Aerial Vehicle,UAV）最为重要的设计目标之一。为探究不同翼尖形状对飞翼无人机P频段电磁散射特性的影响，对典型飞翼无人机翼尖进行多切面建模。采用高精度多层快速多极子方法（Multilevel Fast Multiple Algorithm,MLFMA）分析了不同翼尖方案下飞翼无人机全机在P频段雷达散射截面（Radar Cross Section,RCS）随迎角的变化，设计出优选方案，并进一步分析了优选方案下不同切割位置对整机前向平均RCS的影响。结果表明，在参考线15%处的直切翼尖方案具有最优的P频段电磁散射特性。 |
| 关键词: 飞翼无人机 多形翼尖 P频段 RCS特性 多层快速多极子方法（MLFMA） |
| DOI： |
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| 基金项目:国家自然科学基金资助项目（61901448）;中国科学院青年创新促进会资助项目（2020149） |
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| P-band RCS characteristic and influence analysis of flying-wing UAV with multi-shape wingtips |
| WANG Ruochen,YANG Yanping,ZHANG Guoxin,WANG Bo,MA Xiaoping |
| (1.Institute of Engineering Thermophysics,Chinese Academy of Sciences,Beijing 100190,China;
2.University of Chinese Academy of Sciences,Beijing 100049,China) |
| Abstract: |
| The stealth characteristic of the whole aircraft is one of the most important design objectives of advanced unmanned aerial vehicles(UAVs).To investigate the influence of different wingtip shapes on the electromagnetic scattering characteristics of flying-wing UAVs at P-band,the wingtip of a typical unmanned flying-wing UAV is modeled in multiple sections.Then,the high-fidelity Multi-level Fast Multiple Algorithm(MLFMA) is applied to analyze the P-band radar cross section(RCS) of the whole flying-wing UAV with the change of the attack angle under different wingtip schemes,and the optimized scheme is given.Afterwards,the influence of different cutting positions on the forward average RCS of the whole flying-wing UAV is further analyzed under the optimized scheme.Simulation results show that the straight-cut wingtip scheme at 15% of the reference line has the best P-band electromagnetic scattering characteristic. |
| Key words: flying-wing UAV multi-shape wingtip P-band RCS characteristic multi-level fast multiple algorithm(MLFMA) |
《电讯技术》编辑部 