| 摘要 |
PURPOSE: A blade with riblets for reducing noise is provided to maintain efficient power generation, and to have riblets which are easily attached to an existing blade. CONSTITUTION: A blade with riblets for reducing noise comprises a blade body(110), a plurality of riblets(120), and a film. One side of the blade body is connected to a rotary shaft. The riblets are formed on the blade body. The gaps between the riblets gradually become narrower towards the end of the blade from the rotary shaft. The film is attached to the upper and lower surfaces of the blade body. The thickness direction side of the riblet is formed into an ellipse, triangle, or square shape. The maximum thickness of the riblet is 1/5 of the blade body maximum thickness. |
