摘要
应用二维电磁散射有限元算法理论考虑了几组导体和非导体介质翼型的缩比计算模型,计算出缩比模型的RCS并与1:1模型进行对比。结果显示,导体翼型的缩比模型RCS计算结果与推及的二维导体外形缩比模型测量定律完全符合;非导体翼型的缩比模型在等效阻抗增大时,按缩比测量定律计算的RCS与1:1模型间的相对误差越来越大,但在等效阻抗小于0.5时缩比定律是有效的。
The RCS values of several group scaled models of conductor airfoil （CA） and non-conductor medium airfoil （NCMA） are studied,employing 2-13 EM scattering FE scheme. The results show that based on the scaled models of CA ,the RCS values of original models calculated by 2-D radar measurement law of scaled conductor outline target （RMLSCOT） fit well with the values of 1：1 models;the bigger of the effective impedances of scaled models of NCMA, the larger of the relative errors between the RCS values of original models calculated by 2-13 RMLSCOT and 1 ： 1 models ; when the effective impedances less 0.5,2-D RMLSCOT is efficient.
出处
《航空计算技术》
2008年第1期23-25,共3页
Aeronautical Computing Technique
