Rotating airfoil for sustaining lift and method for generating lift

A rotor blade assembly for generating a lift in a fluid installation, the rotor blade assembly comprising

• an arcuate rotor blade configured to be rotated about its axis Y that extends through the arcuate rotor blade;
• and
• at least one motion transmitting member having an elongated geometry extending from the arcuate rotor blade in a direction generally parallel with the axis Y, the at least one motion transmitting member coupling the arcuate rotor blade to at least one power generating member, the at least one motion transmitting member configured to rotate about the axis Y for transmitting torque from the arcuate rotor blade to the at least one power generating member,
• wherein the arcuate rotor blade defines a concave surface that is the working surface of the arcuate rotor blade and a convex surface with which the at least one motion transmitting member is connected, wherein the axis Y is oriented generally normal to the concave surface and the convex surface of the arcuate rotor blade.