| 摘要 |
[Problem] A combined water/wind turbine provided with a drag type in order to enhance the startability of a lift type has a problem that resistance to the rotation force of the combined water/wind turbine is produced when the limit of the high-speed rotation capability of the drag type is reached or exceeded, and causes performance to become lower than the capability during high-speed rotation of the lift type alone. [Solution] In order to enhance the startability of a vertical axis combined water/wind turbine motor composed of a drag type and a lift type, starting performance is improved by releasing convex surface resistance produced by a drag-type blade going against a fluid, and increasing rotation torque by reduction in resistance, during rotation at high speed higher than or equal to the speed of the fluid, which is the characteristic of a lift-type blade, all wing surfaces of the drag type are naturally brought into an open state by the lift-type blade rotation speed to thereby maintain lift-type high-speed rotation efficiency performance by reducing resistance at the center of the vertical axis combined water/wind turbine motor in a wide range of fluid speed area, and danger when the fluid speed increases is avoided by producing a fully open state by rolling in flight feathers of a drag-type wing surface configuration, by decreasing the entire volume by folding wing surfaces to the rotation shaft side, or by decreasing the entire structure and reducing resistance by eliminating passive surfaces by decreasing the wing area by drawing flight feathers of the wing surface toward the rotation center. |
