| 摘要 |
PURPOSE:To improve the performance against the head wind and obtain a simple and reliable mechanism by dividing a blade model into a symmetrical portion and an asymmetrical portion in the longitudinal direction. CONSTITUTION:A front sail 5 is provided in the front of a main sail 4 of a sail device 1 and a rear sail 6 is provided in the rear respectively, and the front sail is pivoted to the main sail 4 through a front sail rotating center axis and a bearing 8 and the rear sail 6 is pivoted likewise through a rear sail rotating center axis and a bearing 9. In addition, the front sail 5 and rear sail 6 are made to be bent in two at the center, and a stopper unit 10 is provided at the bending section to fix the front sail 5 and rear sail 6 so that they can not be bent. The lower section of the main sail 4 is supported by a stanchion 12 through a rotary bearing 11 so that the main sail 4, i.e., the sail device can be wholly rotated depending on the wind direction. Furthermore, a rectifying sail 7 is provided in the front of the front sail 5 so that its position can be changed in left and right rudder directions. |
