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US 8,573,926 B2Granted
Gas turbine engine fan drive gear system damper
AssigneeUnited Technologies Corporation
InventorsJames B. Coffin, John R. Otto
Life of this patent
Estimating the term…
Abstract
A gas turbine engine includes a fan section. A turbine section is coupled to the fan section via a geared architecture. The geared architecture includes a torque frame and a flex support spaced apart from one another at a location. A gear train is supported by the torque frame. A damper is provided between the torque frame and the flex support at the location.
Claims7
A fan drive gear system for a gas turbine engine comprising:
- first and second members spaced apart from one another at a location;
- a gear train supported by the first member;
- a damper provided between the first member and the second member at the location;
- wherein the first and second members respectively include first and second apertures aligned with one another in an axial direction, the damper extending between and received in the first and second apertures;
- and
- wherein the damper is a tube having opposing ends each supporting a seal, each seal engaging a respective first and second aperture.
3 more elements
A gas turbine engine comprising:
- a fan section;
- a turbine section coupled to the fan section via a geared architecture, the geared architecture including:
- a torque frame and a flex support spaced apart from one another at a location;
- a gear train supported by the torque frame;
- a damper provided between the torque frame and the flex support at the location;
- a sun gear, star gears supported by the carrier, and a ring gear circumscribing the star gears, the star gears intermeshing with the sun gear and the ring gear;
- and
- wherein the torque frame and the flex support respectively include first and second apertures aligned with one another in an axial direction, the damper extends between and is received in the first and second apertures, the damper provided by a tube having opposing ends each supporting a seal, each seal engaging a respective first and second apertures, the tube provides a cavity, and an orifice is provided in the tube in fluid communication with the cavity, the cavity providing a viscous damping chamber between the torque frame and the flex support.
5 more elements
Dependencies are inferred from the claim text.