Patent ID: 8511062

Claim:
A variable area fan nozzle assembly for a turbofan engine, the assembly comprising: (a) a nacelle having an aft edge; (b) a translating thrust reverser sleeve movably disposed aft of the aft edge and including a trailing edge, the thrust reverser sleeve being movable between a forward position and an aft position; (c) a translating fan nozzle having a forward edge, the fan nozzle being movably disposed aft of the trailing edge and being movable between a stowed position and a deployed position, wherein an upstream bypass flow exit is defined between the trailing edge and the forward edge when the fan nozzle is in the deployed position; (d) an actuation system selectively moving the fan nozzle between the stowed position and the deployed position, the actuation system comprising a power drive unit, at least one extensible actuator disposed between the thrust reverser sleeve and the fan nozzle, and a single telescoping coupling corresponding to each extensible actuator, the telescoping coupling disposed between the thrust reverser sleeve and the nacelle; and (e) a jack head coupling the telescoping coupling and the extensible actuator, wherein a first longitudinal axis of the extensible actuator is offset from a second longitudinal axis of the telescoping coupling; (f) wherein the extensible actuator is rotatably coupled to the power drive unit through the jack head and the telescoping coupling such that the telescoping coupling has a first rotational speed and the extensible actuator has a second rotational speed that is different from the first rotational speed.