| 摘要 |
<p>The windmill has automatically rotatable blades connected with a center axis by a bevel gear, such that the blades rotate about a vertical rotational axis in a ratio of 1 to 2 of rotation of a major axis. The blades are rotated about 60 degrees, respectively. The center axis is adjusted such that the blades are synchronously present in a best angle to a flow direction. Surfaces of the blades face the flow direction alternately, when the blades rotate about the vertical rotational axis. Rotary motion is transferred to the blades by an electrical motor.</p> |
