为提高海军航空兵远洋战略投送能力，概念设计一种舰载察打无人机，并进行隐身特性分析。采用CATIA 软件概念设计3D 数字样机，基于物理光学法计算三角形面源散射，基于等效电磁流法计算劈边缘绕射，并将二者 结合进行隐身特性分析，综合数值模拟飞机的雷达散射截面积(radar cross-section，RCS)散射特性。实验结果表明： 采用CATIA 软件，能高效地概念设计飞机的3D 数字样机，可用于论证飞机设计方案；该RCS 计算方法可高效地计 算复杂飞机的RCS 散射特性。
In order to improve the ocean-going strategic delivery capability of naval aviation, a carrier-based reconnaissance and attack UAV is conceptually designed, and its stealth characteristics are analyzed. The 3D digital prototype is conceptually designed by using CATIA(computer aided three-dimensional interface application) software.The scattering of a triangular surface source is calculated based on the physical optics method, and the diffraction of the wedge edge is calculated based on the equivalent current method. The stealth characteristics are analyzed by combining the two methods, and the radar cross section (RCS) scattering characteristics of the aircraft are numerically simulated. The experimental results show that the 3D digital prototype of aircraft can be designed efficiently by using CATIA software, which can be used to demonstrate the aircraft design scheme, and the RCS calculation method can calculate the RCS scattering characteristics of complex aircraft efficiently.