WIND GENERATOR BLADE

摘要

Blade (1) extending along a geometric axis (1g XY /1g YZ ) from a root (111 XY /111 YZ ) where the blade (1) is joined to the rotor (2) to a tip (122 XY /122 YZ ). The blade has in a projection on a side/front plane XY / YZ a side/front root portion (11 XY /11 YZ ) extending from the side/front root (111 XY /111 YZ ) to a first intermediate side/front point (112 XY /112 YZ ); a side/front tip portion (12 XY /12 YZ ) extending from a second intermediate side/front point (121 XY /121 YZ ) to the side/front tip (122 XY /122 YZ ). The side root portion (11 XY ) forms an acute angle ±1 with the axis y in the side root (111 XY ), 0°‰¤ ±1‰¤ 10° and the side tip portion (12 XY ) forms an acute angle ±2 with the axis y in the second intermediate side point (121 XY ), 0°‰¤ ±2‰¤ 10°. The front root portion (11 YZ ) forms an acute angle ²1 with the front pitch axis (1 p YZ) in the front root (111 YZ ), -10°‰¤ ²1‰¤ 10° and the front tip portion (12 YZ ) forms an acute angle ²2 with the front pitch axis (1p YZ ) in the second intermediate front point (121 YZ ), 0°‰¤ ²2‰¤ 10°.