Influence of aircraft surface distribution on electromagnetic scattering characteristics

作     者：Liu Dawei Huang Jun Song Lei Ji Jinzu 

作者机构：School of Aeronautic Science and Engineering Beihang University Beijing 100083 China 

出 版 物：《Chinese Journal of Aeronautics》 (中国航空学报（英文版）)

年 卷 期：2017年第30卷第2期

页      面：759-765页

核心收录：

学科分类：08[工学] 0825[工学-航空宇航科学与技术] 

主　　题：Aircraft concept Electromagnetic scattering characteristic Horizontal polarization MLFMA Stealth Surface distribution Vertical polarization 

摘      要：In this paper,two typical stealth aircraft concepts（wing fuselage blended and flyingwing） were *** three gradually changed surface distribution models with the same planform for each concept were *** on the multilevel fast multipole algorithm（MLFMA）,the vertical polarization transmitting/vertical polarization receiving（VV） and horizontal polarization transmitting/horizontal polarization receiving（HH） radar cross section（RCS） characteristics were simulated with five frequencies between 0.1 and 1.0 *** influences and mechanisms of aircraft surface distribution on electromagnetic scattering characteristics were *** results show that for the wing fuselage blended concept,the W RCS of this frequency range is higher than the HH RCS in most cases,while it is just the opposite for the flying-wing *** for the two aircraft concepts,the RCS levels of HH and W both decrease with the frequency increasing,but the HH RCS has a faster downward *** surface distribution has little influence on HH RCS *** the contrary,it has a significant impact on W RCS characteristics,and the amplitude of the VV RCS increases with the surface thickness.