南京航空航天大学学报
南京航空航天大學學報
남경항공항천대학학보
JOURNAL OF NANJING UNIVERSITY OF AERONAUTICS & ASTRONAUTICS
2009年
z1期
72-74
,共3页
碳纤维复合材料%各向异性%雷达散射截面
碳纖維複閤材料%各嚮異性%雷達散射截麵
탄섬유복합재료%각향이성%뢰체산사절면
carbon fiber reinforced polymer (CFRP)%anisotropy%radar cross section (RCS)
用时域有限差分(Finite difference-time domain,FD-TD)法分析计算了由碳纤维复合材料(Carbon fiber reinforced polymer,CFRP)单向板组成的二面角的电磁反射特性.计算结果表明,碳纤维二面角的雷达散射截面(Radar cross section,RCS)对纤维方向和极化方向敏感.当两块板的纤维方向垂直时,对极化方向敏感度降低.
用時域有限差分(Finite difference-time domain,FD-TD)法分析計算瞭由碳纖維複閤材料(Carbon fiber reinforced polymer,CFRP)單嚮闆組成的二麵角的電磁反射特性.計算結果錶明,碳纖維二麵角的雷達散射截麵(Radar cross section,RCS)對纖維方嚮和極化方嚮敏感.噹兩塊闆的纖維方嚮垂直時,對極化方嚮敏感度降低.
용시역유한차분(Finite difference-time domain,FD-TD)법분석계산료유탄섬유복합재료(Carbon fiber reinforced polymer,CFRP)단향판조성적이면각적전자반사특성.계산결과표명,탄섬유이면각적뢰체산사절면(Radar cross section,RCS)대섬유방향화겁화방향민감.당량괴판적섬유방향수직시,대겁화방향민감도강저.
The electromagnetic scattering characteristics for the dihedral angle composed of carbon fiber reinforced polymer (CFRP) unidirectional laminate are calculated and analyzed by using finite differencetime domain (FD-TD) method. The calculated results demonstrate that the radar cross section (RCS) of the dihedral angle is sensitive to the direction of the fiber and the polarization. And the sensitivity is reduced when the fiber direction in the two laminates of the dihedral angle is perpendicular. Results provide a reference for the aircraft stealth design.
