Patent ID: 8025257
Filing Date: 2011-09-27
Classification: B64C,F16C,Y02T

Abstract:
1. An actuation system for deploying and retracting a lift assisting device of a wing of an aircraft, the actuation system comprising: a track pivotally coupled to the lift assisting device, the track having first and second outer surfaces and side surfaces; a shaft rotationally coupled within the wing of the aircraft and operable, in response to flight control signals, to deploy or retract the lift assisting device; means for actuating the lift assisting device, coupled to the shaft, between a retracted position to a deployed position along an arcuate path; a plurality of track roller bearings rotatably contacting the first and second outer surfaces of the track to guide the track along the arcuate path; and a plurality of side roller bearings rotatably contacting at least one side of the track to guide the track along the arcuate path wherein the plurality of track roller bearings includes at least one lined track roller assembly comprising: an outer ring having inner bearing surfaces; and an inner split ring having a first portion and a second portion, each of the first and second portions having outer bearing surfaces, the inner split ring configured for accommodating deflection and bending of a mounting pin coupling the lined track roller bearing to the track.