Turbine engine with an airfoil having a tip shelf outlet
AssigneeGeneral Electric Company
InventorsJared Peter Buhler, Ronald Scott Bunker, Victor Hugo Silva Correia, Brian Kenneth Corsetti
Life of this patent
Estimating the term…
Abstract
An airfoil for a gas turbine engine includes a pressure side and a suction side, with a root and a tip wall. The pressure side and suction side extend beyond the tip wall to define a tip channel, defining a plurality of internal and external corners. A tip shelf can be defined in the pressure or suction sidewalls. A film hole can extend to the tip shelf, such that the film hole can be shaped to direct a flow of cooling fluid to the film hole to improve film cooling at the tip shelf.
Claims19
An airfoil for a turbine engine comprising:
- an outer wall defining a pressure sidewall and a suction sidewall, extending chord-wise from a leading edge to a trailing edge and span-wise from a root to a tip;
- an extension extending from the outer wall at the tip;
- a tip shelf disposed in the pressure sidewall and at least partially defined by the extension, with the tip shelf including a bottom wall and a side wall of the extension defining a corner where the bottom wall and the side wall intersect;
- and
- at least one film hole extending into the tip shelf and having an inlet and an outlet connected by a passage fluidly coupling the inlet to the outlet, with the outlet having an expansion section;
- wherein the at least one film hole includes a plurality of film holes having a plurality of outlets and the plurality of outlets are disposed among the bottom wall, the side wall, and the corner with at least one outlet of the plurality of outlets provided on each of the bottom wall, the side wall, and the corner.
A blade for a turbine engine comprising:
- an outer wall defining an interior having a pressure side and a suction side, extending chord-wise from a leading edge to a trailing edge and span-wise from a root to a tip;
- an extension extending from the outer wall at the tip;
- a tip shelf disposed in the outer wall at the extension;
- a fillet positioned within the interior and adjacent to the tip shelf;
- and
- at least one film hole disposed in the tip shelf and extending through the fillet, and having an inlet disposed on the fillet and an outlet connected by a passage fluidly coupling the inlet to the outlet, with the outlet having an expansion section;
- wherein the extension is curved at the tip shelf in both the span-wise direction and the chord-wise direction.
An airfoil for a turbine engine comprising:
- an outer wall defining a pressure sidewall and a suction sidewall, extending chord-wise from a leading edge to a trailing edge and span-wise from a root to a tip including an extension;
- a tip shelf disposed in the pressure sidewall and at least partially defined by the extension;
- and
- a film hole extending into the tip shelf and having an inlet and an outlet connected by a passage fluidly coupling the inlet to the outlet, with the outlet having an expansion section;
- wherein the tip shelf is arcuate and the outlet is disposed radially outward of an apex of the tip shelf.
Dependencies are inferred from the claim text.