轻质铝箔V-型皱褶构型板雷达散射性能研究  

Research on RCS of Plates with Folded Structure Made of Aluminium Foil

作　　者：王志瑾[1] 徐庆华[2] 

机构地区：[1]南京航空航天大学航天学院,江苏南京210016 [2]沈阳飞机设计研究所,辽宁沈阳110035

出　　处：《航空学报》2008年第5期1213-1217,共5页Acta Aeronautica et Astronautica Sinica

基　　金：航空科学基金(2006ZA52001)

摘　　要：设计并制作了14个不同几何特征参数的V-型铝箔皱褶构型板。运用电磁数值仿真软件对它们的雷达散射截面(RCS)进行了计算,分析了V-型皱褶板几何特征参数对雷达散射性能的影响。同时,用LFY铝箔制作了14个不同几何特征参数的皱褶构型板,并对它们进行了RCS实验测试。通过对比分析发现,数值计算结果和实验测试结果基本吻合。结果显示,在一定的结构参数下,轻质铝箔皱褶板的RCS比同样平面几何尺寸的平板小,有的甚至降低20dBsm。铝箔皱褶板成型工艺简单,结构重量轻,价格低廉,可用于包敷飞行器内部有较大RCS的大尺寸构件,从而降低整个飞行器的RCS。The fourteen different plates with folded structure made of aluminium foil are designed; their radar cross section （RCS） is calculated using the electromagnetic numerical simulation software. The effect of geometric parameters on the RCS of the plates is investigated. The specimens of the fourteen different plates with different geometry are made from LFY aluminium foil. The RCS experiments of the plates are carried out in the anechoic chamber. The comparisons of experimental and simulation results indicate that simulation results are agreement with the experimental results. It is found that the RCS of the plates with folded structure is much lower than that of the common plates. In some cases, the reduction of the RCS can reach 20 dBsm. In conclusion, the plates with folded structure made of aluminium have good features in terms of manufacture, mass and cost. This kind of plates can be used as a covering structure for airfor aircraft components to reduce the RCS.

关 键 词：雷达散射截面 皱褶结构 夹层板 数值计算 实验研究 

分 类 号：TN95[电子电信—信号与信息处理]