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US 6,634,860 B2Granted
Foil formed structure for turbine airfoil tip
AssigneeGeneral Electric Company
InventorsChing-Pang Lee, Melvin Robert Jackson, Stephen Joseph Ferrigno
Life of this patent
Estimating the term…
Abstract
A turbine airfoil is provided having an integral tip cap and a pair of tip walls which extend radially outward past the tip cap to form a squealer tip. A coaxial pair of first and second holes extend through the tip cap and one of the tip walls respectively at an acute inclination angle, with the first hole being disposed so as to direct impingement cooling air on the tip wall having the second hole. A protective layer comprising a high temperature foil is disposed on the tip wall having the second hole therein.
Claims14
An airfoil comprising:
- an airfoil body having a root, a tip, a leading edge, a trailing edge, a pressure side wall and a suction side wall, and an internal cavity, said internal cavity being bounded at its radially outer end by a tip cap which is integrally formed with said pressure and suction side walls;
- a squealer tip comprising spaced-apart tip walls extending above said tip cap;
- an aligned pair of first and second holes extending through said tip cap and one of said tip walls respectively at an acute inclination angle;
- and
- a protective layer disposed on an outer surface of said one of said tip walls, said protective layer comprising a high temperature foil.
2 more elements
An airfoil comprising:
- an airfoil body having a root, a tip, a leading edge, a trailing edge, a pressure side wall and a suction side wall, and an internal cavity, said internal cavity being bounded at its radially outer end by a tip cap which is integrally formed with said pressure and suction side walls;
- a suction side tip wall disposed at said tip and extending from said leading edge to said trailing edge;
- a pressure side tip wall disposed at said tip and extending from said leading edge to said trailing edge;
- an aligned pair of first and second holes extending through said tip cap and said pressure side tip wall respectively at an acute inclination angle, with said first hole being disposed in flow communication with said internal cavity for discharging therefrom a coolant toward an inner surface of said pressure side tip wall for cooling thereof;
- and
- a protective layer disposed on an outer surface of said pressure side tip wall, said protective layer comprising a high temperature foil.
3 more elements
Dependencies are inferred from the claim text.