| 摘要 |
A blade for a windmill disposed around a rotation center (M) in a vertical direction so as to receive wind force, comprising a front surface (26) including;
a front nose surface (26F) being disposed at front of a traveling direction, also having a greatest average curvature
a low speed airflow passing surface (26L) disposed on a closer side to the rotation center, and formed continuously from the front nose surface to rearward of the traveling direction, and
a high speed airflow passing surface (26H) disposed a distant side from the rotation center, formed continuously from the front nose surface to rearward of the traveling direction with a curved surface swollen greater than the low speed airflow passing surface, and having length as viewed from the vertical direction greater than the low speed airflow passing surface. |
