The dynamic derivatives conception is used as the index for the vehicle stability, but it is looked as the function ofangleofattack and Mach number to induced nonlinear characteristics.
Rotor wake effects are modeled in the form of a correction applied to the angleofattack along the blades. This correction is obtained by computing the local induced downwash with free wake analysis.
旋翼尾流的作用通过自由尾流分析来求解局部的诱导下洗速度以修正翼型攻角。
3
Through experiments, the critical wind speed of the vortex-induced vibration is received. And analyzed effect of the railing and the wind attackangle on the vortex-induced vibration.