The outer end, inner end and the center axis of the windward side are arc-shaped. The wind blades have windward and leeward surfaces according to the direction of rotation. The back wind surface of the wind blade moves gradually from the inner edge side and outer edge side of the wind turbine to the wind blade in the depression of the center of the wind blade according to the direction of rotation of the wind wheel.

The back wind surface of the fan blade is concave from the windward side to the tail flow side according to the direction of rotation. The tail end of the wind side of the wind blade is raised upward. The fan blades have the windward and back wind surfaces according to the direction of rotation. The windward side of the fan blade moves towards the wind blade gradually along the radial direction of the impeller from the inner and outer edge sides of the fan blade.

The windward side of the wind blade is highly convex from the windward side to the tail flow side according to the direction of rotation, and the tail end of the windward side of the wind blade is raised upward. If you want to know more about it, we suggest to pay attention to this website.