隐身结构机翼RCS分析与优化设计  

The Optimization Design of the Wing with Low Detectable Structure

作　　者：李宏信[1] 沈海军[1] 

机构地区：[1]南京航空航天大学航空宇航学院,江苏南京210016

出　　处：《飞机设计》2010年第1期5-8,共4页Aircraft Design

摘　　要：以前缘内部填充吸波材料的隐身结构飞机机翼为研究对象,采用矩量法对其向前的雷达散射截面(RCS)进行数值分析;根据代理模型优化策略,对上述机翼隐身结构中的吸波材料厚度与劈角的选取进行RCS特性分析与优化。研究表明,和全金属机翼相比,隐身结构机翼具有更好的隐身特性;经过优化设计,可在典型方位上显著降低翼面结构RCS,提高了原隐身结构的吸波性能。The low detectable wing with the leading edge filled with absorbing materials is investigated, and the forward Radar Cross Section （RCS） is analyzed with the method of moment. By using the surrogate model based strategy, the thickness and wedge-angle of the filled absorbing materials are optimized. The results show that, in comparison with the metal wing, the wing with low detectable structure has better stealth characteristics, and the RCS of the optimized wing with low detectable structure is reduced obviously on typical location, i.e., the optimized wing has better absorb capability of electromagnetic waves.

关 键 词：隐身结构 RCS 代理模型 矩量法 优化设计 

分 类 号：V271[航空宇航科学与技术—飞行器设计]