Vane assembly
AssigneeROLLS-ROYCE plc
InventorsRez Manzoori, Michael J L Percival, Graham M Upton
Life of this patent
Estimating the term…
Abstract
A vane assembly 40 for use within a gas turbine engine has a main vane portion 42 with an internal cavity 44. A cavity insert 46 is located within the cavity 44, close to the wall 48 to define transpiration cooling paths. Cooling air leaves the insert 46 through apertures directed at the wall 48, to produce impingement cooling. The transpiration cooling paths are extended back to the trailing edge 66 by means of a fairing 54. The use of a fairing in addition to the insert allows more complicated cavity shapes to be filled.
Claims23
A vane assembly for a gas turbine engine, comprising a vane with an internal cavity having a wall surface, a cavity insert which, in use, is located within the cavity and adjacent the cavity wall surface to define therewith a transpiration path for transpiration cooling across the wall surface, the cavity insert having an internal chamber to which cooling air is introduced, during use, and which has a plurality of exit openings to direct cooling air against the cavity wall surface for impingement cooling, and into the transpiration path, and the assembly further comprising at least one further cavity insert so shaped and positioned as to define with the cavity wall surface an extension to the transpiration path, said extension including a smooth transition between said cavity insert and said further cavity insert to provide a smooth transpiration flow path throughout said internal cavity.
A vane assembly comprising a vane with an internal cavity having an internal wall surface, a cavity insert which, in use, is located adjacent the cavity internal wall surface to define therewith a path for transpiration cooling across the wall surface, the assembly further comprising an attachment member which bridges between the cavity wall surface and the cavity insert at or near one end of the vane to attach the cavity insert to the vane and to close the transpiration path at that end of the vane, said attachment member including a smooth transition between said cavity insert and said attachment member to provide a smooth transpiration flowpath throughout said internal cavity.
Dependencies are inferred from the claim text.