US 11,655,767 B2
Gearbox for an engine
Juraj Hrubec, Prague (CZ); Ivan Golovin, Prague (CZ); and Davide Lauria, Turin (IT)
Assigned to GE AVIO S.R.L, Turin (IT)
Filed by GE Avio S.r.l., Turin (IT)
Filed on Feb. 5, 2021, as Appl. No. 17/168,368.
Claims priority of application No. 102020000002272 (IT), filed on Feb. 5, 2020.
Prior Publication US 2021/0310417 A1, Oct. 7, 2021
Int. Cl. F02C 7/36 (2006.01); F16H 1/46 (2006.01); F16H 57/08 (2006.01)
CPC F02C 7/36 (2013.01) [F16H 1/46 (2013.01); F16H 57/082 (2013.01); F05D 2220/323 (2013.01); F05D 2240/60 (2013.01); F05D 2260/4031 (2013.01); F05D 2260/70 (2013.01); F16H 2057/085 (2013.01)] 14 Claims
OG exemplary drawing
 
1. An engine defining an axial direction (A) and a radial direction (R), the engine comprising:
a rotating element comprising a plurality of rotor blades;
a turbomachine comprising a turbine and a shaft rotatable with the turbine; and
a gearbox, the rotating element driven by the shaft of the turbomachine across the gearbox, the gearbox comprising:
a ring gear;
a first sun gear and a second sun gear each directly coupled to, and driven by, the shaft of the turbomachine;
a first planet gear comprising a first gear portion and a second gear portion, wherein the first gear portion of the first planet gear meshes with the first sun gear at a location forward of the ring gear along the axial direction (A), and wherein the second gear portion of the first planet gear meshes with the ring gear; and
a second planet gear comprising a first gear portion and a second gear portion, wherein the first gear portion of the second planet gear meshes with the first sun gear at a location aft of the ring gear along the axial direction (A), and wherein the second gear portion of the second planet gear meshes with the ring gear.