| 摘要 |
PROBLEM TO BE SOLVED: To provide a rotary blade and wind turbine which keep rotation speed constant even if wind speed changes by making the blade serving as a brake to reduce rotation speed when exceeding a certain rotation speed. SOLUTION: A rotary blade 8 of a wind turbine having a lift type blade at a tip of a blade support arm 10, swingably pivots a blade 12 on the tip of the blade support arm 10 through the medium of a vertical spindle 11 and has between the blade 12 and blade support arm 10, a blade opening/closing control member 15 which allows the blade 12 to swing in response to a load when the certain load or more is applied to the blade 12 during rotation. COPYRIGHT: (C)2010,JPO&INPIT |
