等离子体隐身翼面的电磁散射特性研究

摘要

A stealthy wing structure with plasma has been designed. A finite-difference time-domain method is used to analyze the electromagnetic scattering properties of the wing. To minimize the backward scattering from the wing, the plasma collision frequency, filled position and the relative dielectric constant of the leading edge glasssteel skin are optimized. After optimization, the plasma stealthy wing can realize the omnidirectional radar cross section reduction compared to that of the metallic wing, and the backward scattering reduction of 22.56 dB is obtained.%设计了一种等离子体隐身翼面结构，采用时域有限差分方法对翼面的电磁散射特性进行了计算和分析，以翼面后向散射最小化为目标，对等离子体的碰撞频率、填充位置以及前缘玻璃钢蒙皮的相对介电常数进行了优化设计。研究表明，优化后的等离子体隐身翼面较全金禹翼面，可在全向上实现雷达散射截面的减缩，后向散射的减缩值可达22．56dB。