| 摘要 |
PURPOSE:To enable to make an efficient use of wind force, by controlling the direction of hard sails attached to masts erected on an annular float to keep required angles to the direction of wind so that the annular float can be turned in a required direction. CONSTITUTION:An annular float assembly 5 is composed of an annular member 14 and a doughnut-shaped hollow float 15 immersed in water, and it is supported on the water surface. A generator 12 is mounted on a turning shaft 10. Masts 6 are erected equiangularly on the annular float assembly 5, and a hard sail 7 having a flap-like auxiliary sail 16 on the opposite sides thereof is attached to each of the masts 6. With such an arrangement, steering of the sails 7, 16 are controlled by output signals of a computor. That is, at a positionI, they are directed to make an angle of 90 deg. to the direction 8 of wind and an angle of 135 deg. at a position II. Further, at positions IV, V and VI, they are kept parallel to the direction 8 of wind, and at a position VII, the angle is 30 deg.. Further, the angles of the auxiliary sails 16 are also controlled in connection with the angles of the hard sails 7 so that the wind force can be utilized at the highest efficiency. Here, if the wind force fluctuates intermittently, the float assembly 5 can be turned in a stable manner by the function of accompanying flow of water. |
