| 摘要 |
PROBLEM TO BE SOLVED: To provide a blade of a wind turbine, which is simplified in structure, safe even in a high-velocity wind, and is accurately braked so that the speed does not exceed a specified rotational speed by the control of the rotational speed thereof by the centrifugal force due to the rotation. SOLUTION: This blade of a wind turbine is configured so that the rotational speed of the vertically long blade 6 is braked by opening and closing a spoiler 7 pivotally mounted on the vertically long blade 6 of a wind turbine so as to control the rotational speed of the vertically long blade 6 by the centrifugal force during the rotation. COPYRIGHT: (C)2011,JPO&INPIT |
