低成本翼面隐身结构的设计和RCS测试分析

针对某无人侦察机隐身性能的要求,设计出两种低成本的翼面隐身结构方案。该翼面隐身结构由高透波率的蒙皮、内部吸波材料和金属承力结构组成,它们既能满足承载要求,又具有明显降低雷达散射截面(radarcross section,RCS)的特性。为了验证这两种方案在降低RCS方面的有效性,在微波暗室里对这两种结构模型进行了RCS测试。测试结果表明:与常规的金属翼面相比,这两种方案能有效降低翼面的RCS。

Design and RCS analysis of a low cost wing structure with low observability

Two types of low observability wing structures are proposed for a stealthy unmanned air vehicle. Those two low observability wing structures consist of skins and internal materials, and are expected to have low radar cross section (RCS) with the considerations of stress and other requirements. The indoor RCS experiments are conducted to verifiy the effectiveness of the low observability wing structures in reducing the radar cross section. The results of the experiments indicate that the RCS of those two types of wing structures is reduced substantially compared to conventional wings. The conclusion is that the low observability wing structure is a promising means to reduce aircraft's RCS.