Patent ID: 8740740
Filing Date: 2014-06-03
Classification: F01D,F02C,F05D,F16D,F16H,Y10T

Abstract:
1. A turbine engine comprising: an input shaft and a fan shaft rotatable about an axis, the fan shaft supporting fan blades; an epicyclic gear train connected between the input shaft and the fan shaft, the epicyclic gear train including a plurality of star gears, a carrier supporting the plurality of star gears, a sun gear that meshes with the plurality of star gears and a ring gear surrounding and meshing with the plurality of star gears such that the sun gear is rotatable in a first direction and the ring gear is rotatable in a second, opposite direction, the ring gear including first and second portions that each have an inner periphery with teeth, wherein the first and second portions of the ring gear have an outer circumferential surface opposite the teeth that provides a first thickness a second, greater thickness axially inward from the first thickness, and a flange extending radially away from said axis; at least one secondary oil collection feature, said at least one secondary oil collection feature having an angled portion, angled relative to said axis, and a radially aligned portion, radially aligned relative to said axis, said radially aligned portion being connected to one of said flange; and wherein said radially aligned portion further comprises a groove operable to allow oil to pass through a connection between said radially aligned portion and said flange.