Gas path liner for a gas turbine engine

Patent metadata

Field	Value
Publication number	US-10227952-B2
Application number	US-201113250358-A
Country	US
Kind code	B2
Filing date	Sep 30, 2011
Priority date	Sep 30, 2011
Publication date	Mar 12, 2019
Grant date	Mar 12, 2019

Abstract

An exhaust nozzle for a gas turbine engine includes a gas path liner connected to an interior surface of an exhaust nozzle flap. The gas path liner includes a liner backbone that extends along a liner axis, and a plurality of liner panels sequentially connected to the liner backbone along the axis. Each liner panel includes a panel length that extends axially from a first panel end to a second panel end, where the panel length thermally expands independent of the liner backbone

First claim

What is claimed is:

1. An exhaust nozzle for a gas turbine engine having a centerline, the exhaust nozzle comprising:
an exhaust nozzle flap comprising a radially interior surface relative to the centerline; and
a gas path liner comprising
a liner backbone extending along an axis, the liner backbone mounted to the radially interior surface and circumferentially aligned with the exhaust nozzle flap; and
liner panels sequentially connected to the liner backbone along the axis, each liner panel comprising a panel length that extends axially from a first panel end to a second panel end, wherein the panel length thermally expands independent of the liner backbone.

2. The exhaust nozzle of claim 1 , wherein the connection between a first one of the liner panels and the liner backbone consists essentially of a panel mount that axially secures the first one of the liner panels to the liner backbone at a single connection point.

3. The exhaust nozzle of claim 1 , wherein the panel length of each liner panel thermally expands independent of the other liner panels.

4. The exhaust nozzle of claim 1 , wherein a first one of the liner panels is connected to the liner backbone by a panel mount.

5. The exhaust nozzle of claim 4 , wherein the panel mount comprises a backbone mounting flange that extends outwardly from the first one of the liner panels, wherein the backbone mounting flange comprises a mounting aperture into which the liner backbone extends, and wherein the backbone mounting flange is axially secured to the liner backbone.

6. The exhaust nozzle of claim 5 , wherein the panel mount further comprises a second backbone mounting flange that extends outwardly from the first one of the liner panels, wherein the second backbone mounting flange comprises a second mounting aperture through which the liner backbone extends, and wherein the second backbone mounting flange floats axially along the liner backbone.

7. The exhaust nozzle of claim 1 , wherein a first one of the liner panels comprises a flap seal liner segment located at the first panel end of the first one of the liner panels, and wherein the flap seal liner segment comprises an arcuate cross-sectional geometry.

8. The exhaust nozzle of claim 1 , wherein the liner panels comprise a first liner panel and a second liner panel that comprises a recessed lap segment that extends axially over the second panel end of the first liner panel defining a lap joint therebetween.

9. The exhaust nozzle of claim 8 , wherein the gas path liner further comprises a film cooling aperture defined between the recessed lap segment and the second panel end of the first liner panel.

10. The exhaust nozzle of claim 1 , wherein the liner backbone comprises a tubular liner backbone.

11. The exhaust nozzle of claim 1 , wherein a centerline of the liner backbone is circumferentially aligned with a centerline of the exhaust nozzle flap.

Assignees

• Kramer George J
• United Technologies Corp

Inventors

• Kramer George J

Classifications

• F02K1/12

  by means of pivoted flaps · CPC title

• F02K1/805 Primary

  Sealing devices therefor, e.g. for movable parts of jet pipes or nozzle flaps · CPC title

• F02K1/80

  Couplings or connections · CPC title

• F02K1/82

  Jet pipe walls, e.g. liners · CPC title

• F01D25/26 Primary

  Double casings; Measures against temperature strain in casings · CPC title