| 摘要 |
PROBLEM TO BE SOLVED: To provide a blade that can increase collected power while suppressing thrust load to a structure, such as a tower, generated by a blade.SOLUTION: In an axial flow-type blade for a wind power generating device that has a rotor comprising a hub and multiple blades 1 and receives a wind at the rotor to convert it into electric energy, each axial flow-type blade is coupled to the hub via a pitch bearing, and a cross sectional area of the axial flow-type blade gradually decreases toward a tip of the blade from the vicinity of the coupling part to the pitch bearing.SELECTED DRAWING: Figure 1 |
