Patent ID: 8668462
Filing Date: 2014-03-11
Classification: F03D,F05B,Y02E

Abstract:
1. A wind turbine rotor blade comprising a blade tip ( 10 ), a blade root ( 12 ), a leading edge ( 16 ), a trailing edge ( 18 ), a pressure side ( 32 ), a suction side ( 30 ) and a cross-section, which changes from the blade tip ( 10 ) to the blade root ( 12 ), wherein the cross-section in the middle ( 14 ) of the rotor blade is formed by an aerodynamic profile and is mainly circular at the blade root ( 12 ), and wherein the cross-section in a longitudinal portion of the rotor blade, the longitudinal portion being arranged between the blade root ( 12 ) and the middle ( 14 ) of the rotor blade, comprises: a convex pressure side portion ( a concave pressure side addition portion ( a convex suction side portion ( a suction side addition portion ( wherein the kink or inflection point (