| 摘要 |
PROBLEM TO BE SOLVED: To provide a horizontal axis and vertical axis wind mill capable of corresponding to weak wind and strong wind and capable of being stored in the ground surface at the time of heavy weather.SOLUTION: A wind mill is provided with low wind speed blade equipment having any one of a telescopic blade in a longitudinal direction and a flap of a breadth, and in-nacelle power equipment including any of a low wind speed generator of a torque converter and hydraulic pump equipment. At the time of storm or lightning stroke, the tower and blade of the wind mill are stored under the ground and in the ground surface. |
