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US 2018/0363469 A1Published application
Blade tip cooling
AssigneeUnited Technologies Corporation
InventorsEVAN P. MOLONY, CAREY CLUM, DOMINIC J. MONGILLO, CHARLES THISTLE
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Abstract
A casting core may include a core body and a tip comb extending from a tip region of the core body. The tip comb may be integrally formed with the core body. The tip comb may comprise a first casting pedestal and a second casting pedestal. The first casting pedestal and the second casting pedestal may define an aperture having a tapered geometry.
Claims20
A casting core, comprising:
- a core body;
- and
- a tip comb extending from a tip region of the core body and integrally formed with the core body, the tip comb comprising a first casting protrusion and a second casting protrusion, wherein the first casting protrusion and the second casting protrusion define an aperture having a tapered geometry.
An airfoil, comprising:
- an airfoil body defining an airflow path;
- a tip shelf defined in a tip region;
- and
- a first pedestal and a second pedestal disposed in the airflow path at the tip region;
- wherein the first pedestal and the second pedestal define a cooling passage having a proximal end and a distal end;
- wherein the proximal end of the cooling passage has a first width and the distal end of the cooling passage has a second width;
- wherein the first width is greater than the second width.
4 more elements
A method of manufacturing an airfoil, comprising:
- forming a casting core comprising a tip comb integral with a core body, the casting core comprising a first material;
- disposing a mold around the casting core;
- casting a second material around at least a portion of the casting core to form the airfoil;
- and
- removing the casting core.
2 more elements
Dependencies are inferred from the claim text.