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US 7,510,376 B2Granted
Skewed tip hole turbine blade
AssigneeGeneral Electric Company
InventorsChing-Pang Lee, Nicholas Charles Palmer, Kevin Lee Kirkeng
Life of this patent
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Abstract
A turbine blade includes a hollow airfoil having a plurality of bowed tip holes extending through a tip floor thereof and skewed toward a squealer rib extending outwardly from the floor.
Claims27
A turbine rotor blade comprising:
- an airfoil extending outwardly from a platform at a root thereof integrally formed with a supporting dovetail;
- said airfoil including opposite pressure and suction sidewalls spaced apart to define an internal cooling circuit therein, and extending in span from said root to a tip floor at an opposite distal end, and extending in chord between opposite leading and trailing edges;
- a squealer rib extending from said sidewalls around said floor to define an open tip cavity thereatop;
- and
- a plurality of individual bowed tip holes extending through said floor in flow communication with said cooling circuit for receiving cooling air therefrom, and being asymmetrically skewed toward and terminating offset from said rib for directing said cooling air thereagainst.
2 more elements
A gas turbine engine blade comprising a hollow airfoil having a plurality of discrete tip holes extending through a tip floor thereof and asymmetrically bowed toward and terminating offset from a squealer rib extending outwardly from said floor.
A gas turbine engine blade comprising:
- a hollow airfoil including opposite pressure and suction sidewalls extending in span from a root to a tip floor and extending in chord between opposite leading and trailing edges, and a squealer rib extending integrally from said sidewalls to define an open tip cavity;
- and
- a plurality of individual tip holes disposed through said floor along the base of said rib and skewed asymmetrically outboard toward and terminating offset from said rib for directing cooling air thereagainst.
Dependencies are inferred from the claim text.