Turbine blade having tip slot
First Claim
1. A gas turbine engine rotor blade comprising an airfoil and integral dovetail for mounting said airfoil to a rotor disk, said airfoil including:
- first and second sidewalls joined together at a leading edge and at a trailing edge, and extending from a root disposed at said dovetail to a tip plate, and a cooling chamber disposed in said airfoil for receiving cooling fluid through said dovetail;
a first tip wall extending upwardly from said tip plate along said airfoil first sidewall from adjacent said leading edge to adjacent said trailing edge;
a second tip wall extending upwardly from said tip plate along said airfoil second sidewall from said leading edge to adjacent said trailing edge, and being spaced from said first tip wall to define an open-top tip cavity therebetween; and
a first notch disposed in said first tip wall adjacent said airfoil leading edge for channeling into said tip cavity a portion of combustion gas flowable over said airfoil.
1 Assignment
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Accused Products
Abstract
A gas turbine engine rotor blade includes an airfoil having first and second sidewalls joined together at leading and trailing edges. First and second tip walls extend from adjacent the leading edge along the respective first and second sidewalls to adjacent the trailing edge and are spaced apart to define a tip cavity therebetween. A first notch is disposed in the first tip wall adjacent to the leading edge for channeling into the tip cavity a portion of combustion gases flowable over the airfoil for reducing the heating effect of the gases on the blade tip. In a preferred embodiment, a second notch is disposed adjacent to the trailing edge for promoting flow through the tip cavity from the first notch.
98 Citations
9 Claims
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1. A gas turbine engine rotor blade comprising an airfoil and integral dovetail for mounting said airfoil to a rotor disk, said airfoil including:
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first and second sidewalls joined together at a leading edge and at a trailing edge, and extending from a root disposed at said dovetail to a tip plate, and a cooling chamber disposed in said airfoil for receiving cooling fluid through said dovetail; a first tip wall extending upwardly from said tip plate along said airfoil first sidewall from adjacent said leading edge to adjacent said trailing edge; a second tip wall extending upwardly from said tip plate along said airfoil second sidewall from said leading edge to adjacent said trailing edge, and being spaced from said first tip wall to define an open-top tip cavity therebetween; and a first notch disposed in said first tip wall adjacent said airfoil leading edge for channeling into said tip cavity a portion of combustion gas flowable over said airfoil. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification