Gas turbine engine with front support arrangement
AssigneeRtx Corporation
InventorWilliam G. Sheridan
Life of this patent
Estimating the term…
Abstract
A gas turbine engine includes a propulsor section including a propulsor having blades extending from a propulsor hub, and a propulsor shaft that drives the propulsor hub. A compressor section includes a first compressor having a rotatable compressor hub. A speed reduction device drives the compressor hub and the propulsor through a connection established axially forward of the epicyclic gear system relative to an engine longitudinal axis. The epicyclic gear system is straddled by forward and aft bearings that engage a carrier of the speed reduction device.
Claims20
A gas turbine engine comprising:
- a propulsor section including a propulsor having blades extending from a propulsor hub;
- a propulsor shaft that drives the propulsor hub, the propulsor rotatable about an engine longitudinal axis;
- a compressor section including a first compressor and a second compressor, the first compressor including a plurality of stages and a rotatable compressor hub, and the second compressor having a greater number of stages than the first compressor;
- a speed reduction device including an epicyclic gear system, wherein the epicyclic gear system includes a gear reduction ratio greater than 2.3, wherein the epicyclic gear system includes a sun gear, a plurality of intermediate gears, a carrier supporting the intermediate gears and the propulsor hub, and a ring gear, and wherein the speed reduction device drives the compressor hub and the propulsor through a connection established axially forward of the epicyclic gear system relative to the engine longitudinal axis;
- and
- a turbine section including a first turbine and a second turbine, wherein the second turbine drives the propulsor through the epicyclic gear system;
- wherein the epicyclic gear system is straddled by forward and aft bearings that engage the carrier.
A gas turbine engine comprising:
- a propulsor section including a propulsor having blades extending from a propulsor hub;
- a propulsor shaft that drives the propulsor, the propulsor rotatable about an engine longitudinal axis;
- a compressor section including a first compressor and a second compressor, wherein the first compressor includes a plurality of stages;
- a speed reduction device including an epicyclic gear system, wherein the epicyclic gear system includes a gear reduction ratio greater than 2.3, and wherein the epicyclic gear system includes a sun gear, a plurality of intermediate gears, a carrier supporting the intermediate gears and the propulsor hub, and a ring gear;
- a turbine section including a first turbine and a second turbine, wherein the second turbine drives the propulsor through the epicyclic gear system;
- wherein the epicyclic gear system is straddled by forward and aft bearings that engage the carrier;
- and
- wherein the speed reduction device turns the propulsor and the first compressor at a common rotational speed.
Dependencies are inferred from the claim text.