| 摘要 |
PURPOSE: A tip airfoil of blade for wind power generator is provided to have at least one inflection angles on a camber line, thereby suppressing the partial torsional strain of blade even under the strong wind condition that the angle of attack gets suddenly larger. CONSTITUTION: A tip airfoil of blade for wind power generator includes a leading edge (1), a trailing edge (2), which is formed to have a space between itself and the leading edge, and an upper surface (3) and a lower surface (4) which are formed between the leading edge and the trailing edge. The tip air foil (10) is formed in a shape that an inflection point (9) for increasing the lift-to-drag ratio and the torsion strain of blade are included on a camber line (7) which connects the centers on the upper surface and the lower surface. The tip air foil is the external portion of the blade which is 40% of the blade radius direction. [Reference numerals] (AA) Airfoil with a thickness ratio of 30% |
