Patent ID: 7614852

Claim:
A blade for use in a wind turbine, the blade having a longitudinal axis for extending radially outwardly from a center of rotation of the blade on the wind turbine, the blade having a front side with a front surface for orienting in a windward direction and a rear side with a rear surface for orienting in a leeward direction; wherein the blade has a profile taken in a plane oriented substantially perpendicular to the longitudinal axis of the blade, the profile of the blade having a leading edge and a trailing edge; wherein the profile is characterized by a camber ratio, and the camber ratio of the profile is greater than or equal to approximately 4%; wherein the front surface of the front side of the blade is substantially concave in shape; and wherein a thickness of the profile is defined between the front surface of the blade and the rear surface of the blade, the thickness of the blade varying in dimension between the leading edge and the trailing edge.