Blades and damper sleeves for a rotor assembly

A rotor assembly coupled to a rotor, said rotor assembly comprising:

• a plurality of blades spaced circumferentially, each of said plurality of blades comprising an airfoil that extends radially between a root end and a tip end, said airfoil comprising a pressure side, a suction side, a pressure side nub extending from said pressure side, and a suction side nub extending from said suction side, wherein an airfoil length defined between said root and tip ends is greater than one of (i) 40 inches, wherein the rotor is configured for operation at about 3600 rpm, and (ii) 48 inches, wherein the rotor is configured for operation at about 3000 rpm;
• and
• a plurality of sleeves, each of said plurality of sleeves extends from a first end to a second end along a longitudinal axis of said each of said plurality of sleeves, said first end coupled to said pressure side nub of a first of said plurality of blades and said second end coupled to said suction side nub of an adjacent second of said plurality of blades, wherein each of said first end and said second end includes an intermediate end portion orthogonal to said longitudinal axis and a flat end portion and a curved end portion extending oppositely from said intermediate end portion, and wherein said curved end portion of said first end and said curved end portion of said second end are diagonally opposed.