Ramped tip shelf blade
AssigneeGeneral Electric Company
InventorsLeslie Eugene Leeke, Sean Robert Keith, Ronald Eugene Mc Rae, Jr., Dean Thomas Lenahan, David Alan Frey, Daniel John Harris
Life of this patent
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Abstract
A gas turbine engine blade includes pressure and suction sides extending between leading and trailing edges and root to tip. The pressure side includes a tip rib recessed therein to define a tip shelf terminating in an inclined ramp. The ramp may be aligned with streamlines of combustion gas flow for preventing interruption thereof and the increase of heat transfer therefrom.
Claims20
A gas turbine engine blade comprising:
- an airfoil having opposite pressure and suction sides extending in chord between leading and trailing edges and in span between a root and a tip;
- a tip floor bridging said pressure and suction sides, and including first and second ribs extending therealong to define a tip plenum therebetween;
- and
- said first rib is recessed into said pressure side to define a tip shelf therein, and said tip shelf terminates forward from said trailing edge in a ramp inclined outwardly toward said airfoil tip.
A gas turbine engine blade having a tip shelf recessed in a pressure side thereof along a squealer tip rib, and said shelf terminates in an inclined ramp forward of said trailing edge, and said ramp blends into said pressure side.
A gas turbine engine blade comprising a hollow airfoil and integral dovetail, with said airfoil having opposite pressure and suction sides extending between leading and trailing edges and from root to tip, and said tip includes first and second tip ribs extending along said pressure and suction sides, respectively, with said first tip rib being recessed both in depth and width in said pressure side to define a tip shelf therein terminating in an inclined ramp extending toward said trailing edge.
Dependencies are inferred from the claim text.