Vertical axis water/wind turbine motor using flight feather opening/closing wing system
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United States of America Patent
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Jun 13, 2017
Issued Date -
N/A
app pub date -
May 24, 2014
filing date -
May 25, 2013
priority date (Note) -
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Abstract
A stability of a vertical axis combined water/wind turbine motor composed of a drag type and a lift type is improved by releasing convex surface resistance produced by a drag-type blade going against a fluid and increasing rotation torque by the reduction in resistance; during high-speed rotation equal to or higher than a fluid speed, all wing surfaces of the drag type are naturally brought into a released state as a result of being pulled by the lift-type blade rotation speed; and a danger at the time of increasing a fluid speed can be avoided by producing a fully-released state by rolling in feathers of a drag-type wind surface configuration, by decreasing the entire volume by folding wing surfaces to the rotation axis side, or by decreasing the entire structure by drawing feathers on the wing surface toward the rotation center.
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