Abstract: A double wall structured combustor having an outer wall having an inner surface and an outer surface and an inner wall comprising a plurality of tiles. Each tile has at least one interlocking member at a first wall and at least one interengaging member at a second wall. The interlocking member extending through an aperture in the outer wall, and the interengaging member at the second wall engaging with a cutaway section in the first wall of an adjacent tile. On assembly of the combustion chamber, the interlocking members and interengaging members of the tiles ensure lower profile fixings and an overall reduction in number of conventional fasteners used.

Abstract: A method of producing cooling apertures in a combustion chamber head includes mechanically drilling a plurality of cooling apertures through the combustion chamber head from the downstream side of the combustion chamber head. A tool is inserted through at least one aperture for a fuel injector from the downstream side of the combustion chamber head and the tool is rotated about its axis while within the aperture for a fuel injector. Fluid is supplied from the drilling machine through the tool and jets of fluid are directed from nozzles in the tool with at least a radial component towards the cooling apertures on the upstream side of the combustion chamber head to remove burrs and/or caps adjacent the cooling apertures. The present disclosure enables cooling apertures to be drilled through a combustion chamber head using conventional mechanical drilling in a viable and cost effective manner.

Abstract: A gas turbine engine combustion chamber heat shield and seal assembly comprises a heat shield and a seal. The heat shield has an aperture and the seal is located in the aperture in the heat shield. The seal comprises an annular member having an upstream end, a middle and a downstream end. The upstream end of the seal has a diameter greater than the diameter of the aperture in the heat shield, the middle has a diameter less than the diameter of the aperture in the heat shield and the downstream end of the seal has a diameter greater than the diameter of the aperture in the heat shield.

Abstract: A method of manufacturing an annular wall (46) of a combustion chamber (15) comprises depositing layers of a metal sequentially one upon the other to form layers of a spiral wall (45) of the combustion chamber (15). Each layer of metal is deposited in a spiral pathway (122). The ends (E1, E2) of the spiral wall (45) of the combustion chamber (15) are joined together to form the annular wall (46) of the combustion chamber (15). The ends (E1, E2) of the spiral wall (45) of the combustion chamber (15) are at the opposite ends of the spiral pathway (122).

Abstract: A method of producing cooling apertures in a combustion chamber head includes mechanically drilling a plurality of cooling apertures through the combustion chamber head from the downstream side of the combustion chamber head. A tool is inserted through at least one aperture for a fuel injector from the downstream side of the combustion chamber head and the tool is rotated about its axis whilst within the aperture for a fuel injector. Fluid is supplied from the drilling machine through the tool and jets of fluid are directed from nozzles in the tool with at least a radial component towards the cooling apertures on the upstream side of the combustion chamber head to remove burrs and/or caps adjacent the cooling apertures. The present disclosure enables cooling apertures to be drilled through a combustion chamber head using conventional mechanical drilling in a viable and cost effective manner.

Abstract: A double wall structured combustor having an outer wall having an inner surface and an outer surface and an inner wall comprising a plurality of tiles. Each tile has at least one interlocking member at a first wall and at least one interengaging member at a second wall. The interlocking member extending through an aperture in the outer wall, and the interengaging member at the second wall engaging with a cutaway section in the first to wall of an adjacent tile. On assembly of the combustion chamber, the interlocking members and interengaging members of the tiles ensure lower profile fixings and an overall reduction in number of conventional fasteners used.

Abstract: A particle damper is formed using a solid freeform manufacturing technique. A filler provides support for the closing wall of the cavity as it is formed. Apertures allow at least a portion of the filler to be removed. A particle fill of between 90 and 95% is achieved either by removing sufficient filler to reach this fill or removing excess filler and re-filling with damping particles.

Abstract: A gas turbine engine combustion chamber heat shield and seal assembly comprises a heat shield and a seal. The heat shield has an aperture and the seal is located in the aperture in the heat shield. The seal comprises an annular member having an upstream end, a middle and a downstream end. The upstream end of the seal has a diameter greater than the diameter of the aperture in the heat shield, the middle has a diameter less than the diameter of the aperture in the heat shield and the downstream end of the seal has a diameter greater than the diameter of the aperture in the heat shield.

Abstract: A method of manufacturing an annular wall (46) of a combustion chamber (15) comprises depositing layers of a metal sequentially one upon the other to form layers of a spiral wall (45) of the combustion chamber (15). Each layer of metal is deposited in a spiral pathway (122). The ends (E1, E2) of the spiral wall (45) of the combustion chamber (15) are joined together to form the annular wall (46) of the combustion chamber (15). The ends (E1, E2) of the spiral wall (45) of the combustion chamber (15) are at the opposite ends of the spiral pathway (122).

Abstract: A method of manufacturing a thermal barrier coated article including the steps of: a) forming an article having a first surface and a second surface, the article having a plurality of projections extending from the first surface in a direction away from the first surface and away from the second surface, each projection having a first end adjacent the first surface and a second end remote from the first surface, b) depositing a thermal barrier coating on the first surface of the article around each of the projections and on the second ends of the projections, c) removing the thermal barrier coating from the second ends of the projections, and d) forming at least one passage through each projection extending from the second surface of the article through the article and through the respective projection to the second end of the respective projection.

Abstract: A lower cost combustor is formed from a series of sheets of metal that are secured by mechanical fasteners. An increase in diameter of the combustor is achieved through the provision of securing rings to which the sheets of metal are secured.

Abstract: A wall element for a combustion space, the wall element comprising a ceramic body, a support within the body, and attachment means extending from the support and protruding from the body for securing the ceramic body to a combustion space wall.

Abstract: A tile for use as part of an inner wall of a gas turbine engine combustor, the tile being provided with deformable cooling pedestals extending into a space between the tile and the outer wall. The pedestals are deformed in contact with the outer wall of the combustor.

Abstract: A combustor assembly comprising a combustor liner having an opening and a combustor chute, which is formed of a sheet material which is bent to form the desired chute. The chute allows the passage of cooling and dilution air into the combustor.

Abstract: A particle damper is formed using a solid freeform manufacturing technique. A filler provides support for the closing wall of the cavity as it is formed. Apertures allow at least a portion of the filler to be removed. A particle fill of between 90 and 95% is achieved either by removing sufficient filler to reach this fill or removing excess filler and re-filling with damping particles.

Abstract: A lower cost combustor is formed from a series of sheets of metal that are secured by mechanical fasteners. An increase in diameter of the combustor is achieved through the provision of securing rings to which the sheets of metal are secured.

Abstract: It is necessary to support components while machining is performed. In such circumstances work supports are now provided, whilst previously there was a dedicated arrangement for each component to be supported. By achieving a modularity in terms of adjustment through creating mountings comprising rings, arcs or bars secured upon posts a rigidity of presentation of support ends is achieved. By providing spacers for location about the posts on the mountings variability with regard to the positioning of the support ends is achieved such that similar geometry but different sized components and articles can be supported by the support arrangements. Furthermore, the spacers may be readily removed if C shaped, and the rings, arcs or bars can be shifted.

Abstract: A wall element for a combustion space, the wall element comprising a ceramic body, a support within the body, and attachment means extending from the support and protruding from the body for securing the ceramic body to a combustion space wall.

Abstract: A tile for use as part of an inner wall of a gas turbine engine combustor, the tile being provided with deformable cooling pedestals extending into a space between the tile and the outer wall. The pedestals are deformed in contact with the outer wall of the combustor.

Abstract: It is necessary to support components while machining is performed. In such circumstances work supports are now provided, whilst previously there was a dedicated arrangement for each component to be supported. By achieving a modularity in terms of adjustment through creating mountings comprising rings, arcs or bars secured upon posts a rigidity of presentation of support ends is achieved. By providing spacers for location about the posts on the mountings variability with regard to the positioning of the support ends is achieved such that similar geometry but different sized components and articles can be supported by the support arrangements. Furthermore, the spacers may be readily removed if C shaped, and the rings, arcs or bars can be shifted.