WIND TURBINE BLADE WITH WAVE SHAPED TRAILING EDGE
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United States of America Patent
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Oct 8, 2014
filing date -
Nov 21, 2013
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Abstract
A wind turbine with two or more wind turbine blades having at least one continuous profile extending along the length of the blade. The continuous profile may be formed by a plurality of first and second projecting elements which extend in a chord-wise direction. The ratio between the height and length of the first and second element is at least 1:1. The height of the projecting elements may be tapered off from the trailing edge towards the leading edge and/or from the blade root towards the tip end. This allows the increase in strain forces generated in the wind turbine blade to be reduced by deforming the first and second elements in an edgewise direction. This also allows for a continuous reduction of the strain forces and a reduced thickness of the first and second elements which in turn saves material.
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