Pitch angle control system can change pitch, accordingly regulate the rotational speed and output power by adjusting bladeincidence of wind-driven device.
变桨距是通过改变风力机叶片桨距角来改变风力机的转速，从而调整发电机输出功率。
2
The influence of incidence Angle, blade's flexure Angle and exit conditions on the effect of positive blade flexure is discussed.
讨论了冲角、叶片弯曲角和出口条件对叶片正弯曲作用的影响。
3
The combination of the slot with an optimized blade design significantly reduces the secondary flow losses compared to the original turbine stator, especially at large negative angles of incidence.