In order to study the radar characteristics of blunt-hub rotor, a dynamic scattering method (DSM) based on physical optics and physical theory of diffraction is presented. Important influencing factors are analyzed and discussed, including rotor disk inclination, azimuth, elevation angle, and radar wave frequency. The radar cross section (RCS) of the blunt-hub rotor is used for comparison with conventional-hub rotor and sharp-hub rotor. The RCS performance of the blunt-hub rotor at different radar wave frequencies is close to that of the sharp-hub rotor. At larger positive elevation angles, the RCS∼azimuth performance of the blunt-hub rotor is not as good as the other two rotors, while the RCS performance of the blunt-hub rotor has an advantage under the larger negative elevation angle and the inclination of the rotor disk. The presented DSM is feasible and effective for learning the electromagnetic scattering characteristics of the blunt-hub rotor.

为研究钝毂旋翼的雷达特性，提出了一种基于物理光学和衍射物理理论的动态散射方法(DSM)。分析讨论了重要的影响因素，包括转子盘倾角、方位角、仰角和雷达波频率。钝轮毂旋翼的雷达截面（RCS）用于与传统轮毂旋翼和尖轮毂旋翼进行比较。钝毂旋翼在不同雷达波频率下的RCS性能与尖毂旋翼接近。在较大的正仰角下，钝毂旋翼的RCS∼方位性能不如其他两种旋翼，而在较大的负仰角和倾角下，钝毂旋翼的RCS性能具有优势。转子盘。