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US 9,310,079 B2Granted
Combustion liner with open cell foam and acoustic damping layers
AssigneeRolls-Royce North American Technologies Inc.
InventorRichard Christopher Uskert
Life of this patent
Estimating the term…
Abstract
The disclosure is directed to a gas turbine engine combustion liner and a gas turbine engine. The gas turbine engine combustion liner may include a thermally cooled wall section, an acoustically damped wall section, or a thermally cooled and acoustically damped wall section. Open cell foam or honeycomb may be disposed between inner and outer combustion liner walls. The walls, open cell foam, or honeycomb may be made of a composite material.
Claims21
A combustion liner, comprising:
- an outer combustion liner wall;
- an inner combustion liner wall;
- an open cell foam disposed between the outer combustion liner wall and the inner combustion liner wall, wherein at least one of the outer combustion liner wall and the inner combustion liner wall includes a plurality of openings extending therethrough;
- and
- a plurality of cells exposed to the plurality of openings;
- wherein the open cell foam is formed of a composite material, wherein the composite material of the open cell foam is a ceramic matrix composite.
3 more elements
A combustion liner, comprising:
- an outer combustion liner wall having a cooling air supply opening therein;
- a porous open cell foam disposed in fluid communication with the cooling air supply opening;
- and
- an inner combustion liner wall,
- wherein the open cell foam is configured to distribute cooling air received from the cooling air supply opening;
- wherein the inner combustion liner wall includes a plurality of openings;
- further comprising a honeycomb disposed between the inner combustion liner wall and the outer combustion liner wall;
- wherein the honeycomb includes a plurality of cells in fluid communication with the plurality of openings;
- wherein the plurality of cells and the plurality of openings are configured to acoustically damp vibrations at one or more selected frequencies in the combustion liner;
- wherein the open cell foam includes a ceramic matrix composite.
7 more elements
A gas turbine engine, comprising:
- a compressor;
- a combustor in fluid communication with the compressor;
- and
- a turbine in fluid communication with the compressor;
- and
- wherein the combustor includes a combustion liner having an outer combustion liner wall;
- and inner combustion liner wall;
- and an open cell foam including a ceramic matrix composite for cooling the combustion liner disposed between the outer combustion liner wall and the inner combustion liner wall;
- and means for acoustically damping vibrations disposed between the outer combustion liner wall and the inner combustion liner wall.
6 more elements
A combustion liner, comprising:
- an acoustically damped wall section and a thermally cooled wall section;
- wherein the acoustically damped wall section includes:
- an outer combustion liner wall;
- an inner combustion liner wall;
- and
- a honeycomb disposed between the outer combustion liner wall and the inner combustion liner wall, wherein at least one of the outer combustion liner wall and the inner combustion liner wall includes a plurality of openings extending therethrough,
- wherein the honeycomb includes a plurality of cells in fluid communication with the plurality of openings;
- and wherein the plurality of cells and the plurality of openings are configured to acoustically damp vibrations at one or more selected frequencies in the combustion liner;
- wherein the honeycomb is formed of a composite material, wherein the composite material is a ceramic matrix composite;
- and
- the thermally cooled wall section includes an open cell foam disposed between the outer combustion liner wall and the inner combustion liner wall;
- wherein the acoustically damped wall section and the thermally cooled wall section vary with location along the outer combustion liner wall and/or the inner combustion liner wall.
9 more elements
Dependencies are inferred from the claim text.