飞机表面电磁缺陷研究的低散射载体设计  

Design of Low Scattering Carrier for the Study of Electromagnetic Defects on Aircraft Surface

作　　者：朱林寰 苏飞 叶文娟 李沛恒 许鼎[2] ZHU Linhuan;SU Fei;YE Wenjuan;LI Peiheng;XU Ding(State-owned Wuhu Machinery Factory,Wuhu 241007,China;School of Electronic Information Engineering,Beijing University of Aeronautics and Astronautics,Beijing 100083,China)

机构地区：[1]国营芜湖机械厂,安徽芜湖241007 [2]北京航空航天大学电子信息工程学院,北京100083

出　　处：《无线电工程》2022年第6期1037-1043,共7页Radio Engineering

基　　金：国家部委基金资助项目。

摘　　要：通过隐身飞机表面电磁缺陷损伤样件(涂层损伤、结构缝隙和阶差)研究弱电磁散射源对飞机总体散射的影响,是隐身飞机设计及外场维护策略制定的一个重要手段,但对每件损伤样件边缘开展低散射处理,会造成较高的时间和制造成本,因此设计样件测试用的低散射载体是解决上述问题的最有效方法。提出以中心对称的半剖棱椎体参数化模型为基础的低散射载体设计优化思路,制作出一种空心低散射载体,可以将样件嵌套到低散射载体中开展电磁散射特性测试。载体的仿真和实测结果显示,该载体能够有效保证散射特性测试数据的准确性,提升研究效率,降低研究成本。An important method for the design of stealth aircraft and the development of external field maintenance standards is to study the influence of weak electromagnetic scattering sources on the aircraft’s overall scattering through surface electromagnetic defect damage samples(coating damage,structural gaps and step differences)of the stealth aircraft.However,carrying out low-scattering treatment on the edges of each damaged sample will lead to longer time and higher manufacturing costs.Therefore,designing a low-scattering carrier for sample testing is the most effective way to solve the above problems.A parametric model of a centrosymmetric semi-cut pyramid is proposed as the basis for the optimization of the low-scattering carrier design.A hollow low-scattering carrier is produced,and the sample can be embedded in the low-scattering carrier to test the electromagnetic scattering characteristics.The simulation and actual measurement results of the carrier show that the carrier can effectively ensure the accuracy of the scattering characteristics test,improve research efficiency and reduce research costs.

关 键 词：表面电磁缺陷 样件 低散射载体 弱散射源 多层快速多极子算法 

分 类 号：TN02[电子电信—物理电子学] V218[航空宇航科学与技术—航空宇航推进理论与工程]