| 摘要 |
PURPOSE: A blade airfoil for an aerogenerator is provided to improve an output performance of a blade by a high lift-drag ratio by forming a maximum thickness ratio (t/c) as 21% at a cross section airfoil of a longitudinal direction (spanwise) 50% vicinity of a blade. CONSTITUTION: A blade airfoil for an aerogenerator comprises an airfoil section used at a longitudinal direction (spanwise) 50% vicinity of a blade. In an airfoil, a maximum thickness ratio (t/c) which is a rate of a maximum thickness (t) to a lower side from an upper side and a code length (c) of a code which is a straight line which continues a leading edge and a trailing edge is 21%. A reynold's number (Re# = air density * speed of wind * code length / air viscosity coefficient) in which the airfoil is operated is 2,000,000 to 3,000,000. |
