翼尖尖点散射特性分析  

Electromagnetic Scattering Characteristics Analysis of Wing Tip

作　　者：徐顶国 艾俊强[1] 雷武涛[1] 王立波[1] XU Dingguo;AI Junqiang;LEI Wutao;WANG Libo(AVIC The First Aircraft Institute,Xi’an 710089,China)

机构地区：[1]中航工业第一飞机设计研究院,西安710089

出　　处：《电讯技术》2018年第7期805-810,共6页Telecommunication Engineering

摘　　要：为解决机翼翼尖等弱散射源所带来的雷达散射截面(RCS)贡献问题,针对典型机翼设计了几种不同的机翼翼尖方案,建立了典型翼尖数值模型。利用基于多层快速多极子算法(MLFMA)的FEKO软件,计算、分析不同方案翼尖外形在不同频段、不同方位角下的RCS量级,并优选出对机翼RCS贡献最低的翼尖外形方案。计算结果表明,针对典型机翼,从翼尖到翼根方向上15%处顺气流直切的翼尖外形方案,其翼尖尖点所带来的RCS贡献最小。In order to solve the problem of the electromagnetic scattering produced by the wing tip,a typical wing is studied,and several different wing tip shapes are designed.Based on the shapes,model of electromagnetic scattering analysis is constructed.The scattering characteristic and the Radar Cross Section(RCS)level at deferent band and azimuth are calculated and analyzed by using Multilevel Fast Multiple Algorithm(MLFMA)based FEKO software,and the best design of wing tip shape with low RCS level is selected according to the simulation data.The results show that when cutting the tip according to the flow direction at the location of 15%wingspan of wing tip,the best stealth performance can be obtained.

关 键 词：隐身作战飞机 机翼翼尖 雷达散射截面 多层快速多极子算法 

分 类 号：TN02[电子电信—物理电子学]