US 12,331,683 B2
Bearing arrangement for turbine engine geartrain
Paul R. Hanrahan, Sedona, AZ (US)
Assigned to RTX CORPORATION, Farmington, CT (US)
Filed by RTX Corporation, Farmington, CT (US)
Filed on Sep. 29, 2023, as Appl. No. 18/375,102.
Prior Publication US 2025/0109708 A1, Apr. 3, 2025
Int. Cl. F16H 1/28 (2006.01); F02C 7/06 (2006.01); F16H 57/08 (2006.01); F02C 7/36 (2006.01)
CPC F02C 7/06 (2013.01) [F16H 1/28 (2013.01); F16H 57/08 (2013.01); F02C 7/36 (2013.01); F16H 2057/085 (2013.01)] 15 Claims
OG exemplary drawing
 
1. An engine assembly, comprising:
a sun gear;
a ring gear rotatable about an axis and circumscribing the sun gear;
a plurality of intermediate gears arranged circumferentially about the axis in an array, each of the plurality of intermediate gears radially between and meshed with the sun gear and the ring gear;
a carrier rotatable about the axis, each of the plurality of intermediate gears rotatably mounted to the carrier;
a first rotating structure comprising the carrier;
a second rotating structure comprising the ring gear;
a first bearing radially between and engaged with the first rotating structure and the second rotating structure;
a stationary structure circumscribing the first rotating structure; and
a second bearing radially between and engaged with the first rotating structure and the stationary structure;
wherein the first bearing and the second bearing are arranged on opposing axial sides of the array of the plurality of intermediate gears.