Nozzle guide vane passage
AssigneeROLLS-ROYCE plc
InventorSteven Hillier
Life of this patent
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Abstract
Described is a nozzle guide vane assembly may comprise: a plurality of nozzle guide vane passages arranged in an annular array, each nozzle guide passage comprising inner and outer radial platforms, a suction surface of a first vane, and a pressure surface of a second vane, wherein the nozzle guide passages are made from a plurality of layers of ceramic fibers held in a ceramic matrix, wherein a first nozzle guide passage includes at least one attachment lug attaching the nozzle guide passage to either or both of an engine casing and an adjacent second nozzle guide passage, the attachment lug being integral with the first nozzle guide passage.
Claims16
A nozzle guide vane arrangement comprising:
- a plurality of nozzle guide passages arranged in an annular array, each nozzle guide passage comprising inner and outer radial platforms, a suction surface of a first vane, and a pressure surface of a second vane, wherein the nozzle guide passages are made from a plurality of layers of ceramic fibres held in a ceramic matrix,
- wherein a first one of the nozzle guide passages includes at least one attachment lug configured to attach the nozzle guide passage to an adjacent second one of the nozzle guide passages, the attachment lug being integral with the first nozzle guide passage.
A nozzle guide vane arrangement comprising:
- a plurality of nozzle guide passages arranged in an annular array, each nozzle guide passage comprising inner and outer radial platforms, a suction surface of a first vane, and a pressure surface of a second vane, wherein the nozzle guide passages are made from a plurality of layers of ceramic fibres held in a ceramic matrix,
- wherein a first one of the nozzle guide passages includes at least one attachment lug attaching the nozzle guide passage to either or both of an engine casing and an adjacent second one of the nozzle guide passages, the attachment lug being integral with the first nozzle guide passage,
- wherein the platform regions extend upstream and downstream of the vanes so as to provide an annular inlet and outlet to the annular array of vanes and the attachment lugs extend radially outwards of the annular inlet or outlet,
- wherein each nozzle guide passage includes an edge along which it joins the adjacent nozzle guide passage in the arrangement and wherein the attachment lugs are placed at or along the edge, and
- wherein adjacent nozzle guide passages include corresponding attachment lugs, the corresponding attachment lugs being attached together so as to couple adjacent nozzle guide passages in the nozzle guide vane arrangement.
Dependencies are inferred from the claim text.