Gas turbine engine and panel for a gas turbine engine

Patent metadata

Field	Value
Publication number	US-10954964-B2
Application number	US-201916255384-A
Country	US
Kind code	B2
Filing date	Jan 23, 2019
Priority date	Mar 26, 2018
Publication date	Mar 23, 2021
Grant date	Mar 23, 2021

Abstract

A gas turbine engine for an aircraft includes: a flow path boundary, which delimits the flow path through the engine radially on the outside, and a lining, which lines the flow path boundary on the inside, at least along an axial section. Here, the lining includes a plurality of panels, which, in the circumferential direction of the flow path boundary, adjoin each other and which together line a circumferential area of 360°, wherein each panel has two end faces, which each adjoin an end face of an adjacent panel. The panels are of beveled design at their end faces, such that two mutually adjoining panels form a V-shaped gap between them, the minimum clearance of which is realized at the inside of the panels. The panels can be sound-absorbing panels. Also disclosed is a panel for a gas turbine engine.

First claim

The invention claimed is:

1. A gas turbine engine for an aircraft, comprising:
a flow path boundary, which radially delimits an exterior of a flow path through the gas turbine engine, and
a lining, which lines an interior of the flow path boundary, along an axial section,
the lining comprising a plurality of panels adjoining each other in a circumferential direction of the flow path boundary, and together lining a circumferential area of 360°, each of the plurality of panels including two end faces, which each adjoin a respective end face of an adjacent one of the plurality of panels,
the two end faces being beveled such that two mutually adjoining ones of the plurality of panels form a V-shaped gap therebetween, with minimum clearance of the V-shaped gap being positioned at an internal side of the two mutually adjoining ones of the plurality of panels;
each of the plurality of panels including a layer which, when laid out flat, consists of prismatic cells with a polygonal base surface; and
the prismatic cells on each of the two end faces extending parallel to the respective one of the two end faces.

2. The gas turbine engine according to claim 1 , wherein the V-shaped gap is formed in such a way to allow each of the plurality of panels to be removed radially inwards from the lining during disassembly of the lining.

3. The gas turbine engine according to claim 1 , wherein an angle of the V-shaped gap is greater than 0° and less than or equal to 45°.

4. The gas turbine engine according to claim 1 , wherein, in cross section, the plurality of panels have a radially inner interior curved in a circular arc and having a first arc length and a radially outer exterior curved in a circular arc and having a second arc length, a radial distance between the first arc length and the second arc length defining a total thickness of the plurality of panels, wherein the first arc length is equal to the second arc length.

5. The gas turbine engine according to claim 1 , wherein the panels are sound-absorbing panels.

6. The gas turbine engine according to claim 1 , wherein each of the plurality of panels has a sandwich construction including a covering laver including the layer consisting of the prismatic cells being positioned on a radially exterior of the each of the plurality of panels and a perforated inner layer positioned on a radially interior of the each of the plurality of panels.

7. The gas turbine engine according to claim 6 , wherein the lining lines the flow path boundary in a region of a fan housing.

8. The gas turbine engine according to claim 7 , wherein the covering layer is formed by a fan housing.

9. The gas turbine engine according to claim 1 , wherein a total thickness of each of the plurality of panels is constant in an installed state.

10. The gas turbine engine according to claim 9 , wherein a length of the prismatic cells increases towards each of the end faces.

11. The gas turbine engine according to claim 1 , wherein the V-shaped shaped gap is filled at least partially with a filler material.

12. The gas turbine engine according to claim 1 , wherein the lining has two to eight of the plurality of panels.

13. The gas turbine engine according to claim 1 , and further comprising:
an engine core, which comprises a turbine, a compressor and a turbine shaft, which connects the turbine to the compressor and is hollow;
a fan, which is positioned upstream of the engine core, wherein the fan comprises a plurality of fan blades; and
a transmission, which receives an input from the turbine shaft and outputs drive for the fan in order to drive the fan at a lower speed than the turbine shaft.

14. The gas turbine engine according to Claim 1 , wherein the lining has four to six of the plurality of panels.

15. A panel for a gas turbine engine, which is provided and suitable for forming, together with further panels, a lining of a flow path boundary of a gas turbine engine, wherein the panel has two end faces, which are each provided to adjoin one end face of an adjacent panel,
wherein the end faces are beveled such that two mutually adjoining panels form a V-shaped gap therebetween, with minimum clearance of the V-shaped gap being positioned at an internal side of the two mutually adjoining ones of the plurality of panels;
the panel including a layer which, when laid out flat, consists of prismatic cells with a polygonal base surface; and
the prismatic cells on each of the end faces of the panel extending parallel to the respective end face.

16. The panel according to claim 15 , wherein the beveled end faces allow for removal radially inwards from an anchoring point in the gas turbine engine during disassembly.

17. The panel according to claim 15 , wherein the panel is a sound-absorbing panel.

Assignees

• Rolls Royce Deutschland Ltd & Co Kg
• Rolls Royce Plc

Inventors

• Richter Christoph
• Hilton Tom

Classifications

• F05D2230/60

  Assembly methods · CPC title

• F02C7/04

  Air intakes for gas-turbine plants or jet-propulsion plants · CPC title

• F05D2250/37

  circumferential · CPC title

• F05D2250/294

  grooved · CPC title

• F02K1/827

  Sound absorbing structures or liners · CPC title