Bearing system for gas turbine engine

Patent metadata

Field	Value
Publication number	US-10138757-B2
Application number	US-201414910829-A
Country	US
Kind code	B2
Filing date	Aug 18, 2014
Priority date	Aug 20, 2013
Publication date	Nov 27, 2018
Grant date	Nov 27, 2018

Abstract

A bearing system is provided for a gas turbine engine. This bearing system includes a spring defined about an axis of rotation. The spring has a multiple of beams which extend between a flange and a damper attachment. A damper defined about the axis of rotation and mounted to the spring to at least partially axially overlap the multiple of beams.

First claim

What is claimed is:

1. A bearing system for a gas turbine engine, comprising:
a spring defined about an axis, the spring including a multiple of beams that extend between a radial flange and a damper attachment;
a damper defined about the axis, the damper fastened to the damper attachment and nested within the spring; and
a bearing mounted to the damper, wherein a hearing element of the bearing is axially aligned with the radial flange.

2. The bearing system as recited in claim 1 , further comprising a multiple of fasteners that mount the spring to the damper at the damper attachment.

3. The bearing system as recited in claim 1 , wherein the spring is welded to the damper at the damper attachment.

4. The bearing system as recited in claim 1 , wherein the radial flange extends radially outboard with respect to the axis.

5. The bearing system as recited in claim 4 , wherein the damper attachment extends radially inboard with respect to the axis of rotation.

6. The bearing system as recited in claim 1 , wherein the damper defines a bearing support section radially inboard of the radial flange.

7. The bearing system as recited in claim 1 , wherein the damper at least partially axially overlaps the multiple of beams.

8. A gas turbine engine, comprising:
a spring defined about an axis, the spring including a multiple of beams that extend between a radial flange and a damper attachment, the radial flange mounted to a static structure;
a damper defined about the axis, the damper fastened to the damper attachment and nested within the spring; and
a bearing mounted between the damper and a rotor shaft to rotationally support the rotor shaft;
wherein the static structure includes a radial wall with an axial flange, the radial flange mounted to the radial wall; and
wherein a bearing element of the bearing is axially aligned with the radial flange.

9. The gas turbine engine as recited in claim 8 , wherein the damper defines a bearing support section radially inboard of the radial flange.

10. The gas turbine engine as recited in claim 8 , wherein the axial flange extends between the spring and the damper.

11. The gas turbine engine as recited in claim 8 , wherein the radial flange extends radially outboard with respect to the axis.

12. The gas turbine engine as recited in claim 11 , wherein the damper attachment extends radially inboard with respect to the axis of rotation.

13. A gas turbine engine, comprising:
a spring defined about an axis, the spring including a multiple of beams that extend between a radial flange and a damper attachment, the radial flange mounted to a static structure;
a damper defined about the axis, the damper fastened to the damper attachment and nested within the spring;
a bearing mounted between the damper and a rotor shaft to rotationally support the rotor shaft; and
a multiple of fasteners that mount the damper to the spring at the damper attachment, the multiple of fasteners mounted into a distal end of the damper.

14. A gas turbine engine, comprising:
a spring defined about an axis, the spring including a multiple of beams that extend between a radial flange and a damper attachment, the radial flange mounted to a static structure;
a damper defined about the axis, the damper fastened to the damper attachment and nested within the spring; and
a bearing mounted between the damper and a rotor shaft to rotationally support the rotor shaft;
wherein the damper attachment and the spring define an interference fit.

Assignees

• United Technologies Corp

Inventors

• Witlicki Russell B
• Amador Armando

Classifications

• F01D25/164 Primary

  Flexible supports; Vibration damping means associated with the bearing · CPC title

• F01D25/28

  Supporting or mounting arrangements, e.g. for turbine casing · CPC title

• F16C27/045

  with a fluid film, e.g. squeeze film damping · CPC title

• F05D2240/60

  Shafts · CPC title

• F16C19/26

  with a single row of rollers · CPC title