Castings, casting cores, and methods
AssigneeUnited Technologies Corporation
InventorsRaymond Surace, Justin D. Piggush, Tracy A. Propheter-Hinckley, Amarnath Ramlogan, Yongxiang D. Xue, Anthony P. Cherolis, Matthew A. Devore, Eric P. Letizia
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Abstract
The pattern has a pattern material and a casting core combination. The pattern material has an airfoil. The casting core combination is at least partially embedded in the pattern material. The casting core combination comprises a plurality of metallic casting cores. Each metallic casting core has opposite first and second faces and a respective portion along the trailing edge of the airfoil. At least two of the metallic cores have sections offset between the pressure side and the suction side.
Claims23
A pattern for casting a component having an airfoil, the pattern comprising:
- a pattern material having an airfoil portion having:
- a leading edge;
- a trailing edge;
- a pressure side;
- and a suction side;
- and
- a casting core combination at least partially embedded in the pattern material and comprising:
- a plurality of metallic casting cores each having:
- opposite first and second faces;
- and
- a respective portion along the trailing edge,
- wherein:
- at least two of the metallic casting cores extend partially outside the airfoil within the pattern material and have sections offset between the pressure side and suction side.
A gas turbine engine component comprising:
- an airfoil having:
- a leading edge;
- a trailing edge;
- a pressure side extending between the leading edge and trailing edge;
- a suction side extending between the leading edge and trailing edge;
- and
- a cooling passageway system extending through the airfoil and comprising:
- a plurality of inlets;
- and
- a segmented trailing edge discharge slot,
- wherein:
- the cooling passageway system comprises a plurality of sections stacked between the pressure side and suction side and respectively feeding different ones of the segments of the trailing edge discharge slot.
A pattern for casting a component having an airfoil, the pattern comprising:
- a pattern material having an airfoil portion having:
- a leading edge;
- a trailing edge;
- a pressure side;
- and a suction side;
- and
- a casting core combination at least partially embedded in the pattern material and comprising:
- a plurality of metallic casting cores each having:
- opposite first and second faces;
- and
- trunk portions in the pattern material at least partially outside of the airfoil portion where one said face of a first said metallic casting core faces another core.
A gas turbine engine component comprising:
- an airfoil having:
- a leading edge;
- a trailing edge;
- a pressure side extending between the leading edge and trailing edge;
- a suction side extending between the leading edge and trailing edge;
- and
- a cooling passageway system extending through the airfoil and comprising:
- a plurality of inlets;
- and
- a plurality of outlets,
- wherein:
- the cooling passageway system comprises:
- a plurality of sections stacked between the pressure side and suction side;
- a plurality of trunks arrayed streamwise;
- and
- at least one said trunk having a plurality of stacked portions respectively formed by associated ones of the stacked sections in the pattern material at least partially outside of the airfoil portion.
Dependencies are inferred from the claim text.