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US 7,118,342 B2Granted
Fluted tip turbine blade
AssigneeGeneral Electric Company
InventorsChing-Pang Lee, James Robert Bailey, Nicholas Charles Palmer, Wenfeng Lu
Life of this patent
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Abstract
A turbine blade includes an airfoil having pressure and suction sidewalls extending between leading and trailing edges and root and tip. The tip includes squealer ribs extending from a tip floor forming an open tip cavity. The rib along the pressure sidewall has a squared external corner, and a flute extends along the base of the rib at the tip floor.
Claims22
A turbine airfoil comprising:
- laterally opposite pressure and suction sidewalls extending in chord between opposite leading and trailing edges and in span between a root and a tip, and including an internal cooling circuit;
- said tip including first and second squealer ribs extending outwardly from a tip floor to squared internal and external corners thereof;
- and
- said pressure sidewall includes a flute in the external surface thereof extending chordally along the base of said first rib at said tip floor, and terminating below said squared external corner of said first rib.
1 more element
A turbine blade comprising:
- a hollow airfoil integrally joined at a root to a platform and dovetail;
- said airfoil including laterally opposite pressure and suction sidewalls extending in chord between opposite leading and trailing edges and in span from said root to an outer tip at a distal end thereof;
- said tip including first and second squealer ribs extending outwardly from a tip floor bridging said pressure and suction sidewalls and forming therebetween a tip cavity open outwardly;
- and
- said first rib including a squared external corner aligned with the external surface of said pressure sidewall, and a flute in said external surface extending chordally along the base of said first rib at said tip floor.
2 more elements
Dependencies are inferred from the claim text.