Airfoil

Patent metadata

Field	Value
Publication number	US-10132168-B2
Application number	US-201615069738-A
Country	US
Kind code	B2
Filing date	Mar 14, 2016
Priority date	Mar 14, 2016
Publication date	Nov 20, 2018
Grant date	Nov 20, 2018

Abstract

An airfoil is disclosed, comprising an airfoil body and an internal cavity within the airfoil body. The internal cavity may comprise an outer edge comprising a first outer scallop and a second outer scallop, an inner edge opposite the outer edge, the inner edge comprising a first inner scallop and a second inner scallop, a leading edge spanning between the outer edge and the inner edge, and a trailing edge spanning between the outer edge and the inner edge and opposite the leading edge. Between the outer edge, the inner edge, the leading edge, and the trailing edge, the internal cavity may comprise eight columns of pedestals disposed axially relative to one another and axially between the leading edge and the trailing edge.

First claim

What is claimed is:

1. An airfoil core, comprising:
an outer diameter surface comprising a first outer scallop mold and a second outer scallop mold;
an inner diameter surface opposite the outer diameter surface, the inner diameter surface comprising a first inner scallop mold and a second inner scallop mold;
a leading edge between the outer diameter surface and the inner diameter surface;
a trailing edge between the outer diameter surface and the inner diameter surface and opposite the leading edge; and
a core body enclosed by the outer diameter surface, the inner diameter surface, the leading edge, and the trailing edge, the core body comprising:
a first pedestal mold column;
a second pedestal mold column axially adjacent to the first pedestal mold column;
a third pedestal mold column axially adjacent to the second pedestal mold column;
a fourth pedestal mold column axially adjacent to the third pedestal mold column;
a fifth pedestal mold column axially adjacent to the fourth pedestal mold column;
a sixth pedestal mold column axially adjacent to the fifth pedestal mold column;
a seventh pedestal mold column axially adjacent to the sixth pedestal mold column; and
an eighth pedestal mold column axially adjacent to the seventh pedestal mold column and the trailing edge,
wherein the first pedestal mold column comprises 18 first column pedestal molds, wherein the 18 first column pedestal molds each comprise a first column pedestal mold diameter between a range of 0.070 inch to 0.080 inch.

2. The airfoil core of claim 1 , wherein the second pedestal mold column comprises 19 second column pedestal molds, wherein the 19 second column pedestal molds each comprise a second column pedestal mold diameter between a range of 0.070 inch to 0.080 inch.

3. The airfoil core of claim 1 , wherein the third pedestal mold column comprises 18 third column pedestal molds, wherein the 18 third column pedestal molds each comprise a third column pedestal mold diameter between a range of 0.05 inch and 0.07 inch.

4. The airfoil core of claim 1 , wherein the fourth pedestal mold column comprises 19 fourth column pedestal molds, wherein the 19 fourth column pedestal molds each comprise a fourth column pedestal mold diameter between a range of 0.070 inch and 0.080 inch.

5. The airfoil core of claim 1 , wherein the fifth pedestal mold column comprises:
a fifth column first group extending radially from the inner diameter surface, the fifth column first group comprising 4 fifth column first group pedestal molds each having a fifth column first group diameter between a range of 0.070 inch and 0.080 inch;
a fifth column second group extending radially from the fifth column first group, the fifth column second group comprising 3 fifth column second group pedestal molds each having a fifth column second group diameter between a range of 0.070 inch and 0.080 inch;
a fifth column third group extending radially from the fifth column second group, the fifth column third group comprising 4 fifth column third group pedestal molds each having a fifth column third group diameter between a range of 0.060 inch and 0.070 inch;
a fifth column fourth group extending radially from the fifth column third group, the fifth column fourth group comprising 3 fifth column fourth group pedestal molds each having a fifth column fourth group diameter between a range of 0.070 inch and 0.080 inch; and
a fifth column fifth group extending radially from the fifth column fifth group and to the outer diameter surface, the fifth column fifth group comprising 4 fifth column fifth group pedestal molds each having a fifth column fifth group diameter between a range of 0.070 inch and 0.080 inch.

6. The airfoil core of claim 1 , wherein the sixth pedestal mold column comprises:
a sixth column first group extending radially from the inner diameter surface, the sixth column first group comprising 7 sixth column first group pedestal molds each having a sixth column first group length between a range of 0.060 inch and 0.070 inch and a sixth column first group width between a range of 0.050 inch and 0.060 inch;
a sixth column second group extending radially from the sixth column first group, the sixth column second group comprising 5 sixth column second group pedestal molds each having a sixth column second group diameter between a range of 0.050 inch and 0.060 inch;
a sixth column third group extending radially from the sixth column second group, the sixth column third group comprising 10 sixth column third group pedestal molds each having a sixth column third group diameter between a range of 0.040 inch and 0.050 inch; and
a sixth column fourth group extending radially from the sixth column third group and to the outer diameter surface, the sixth column fourth group comprising 7 sixth column fourth group pedestal molds each having a sixth column fourth group diameter between a range of 0.050 inch and 0.060 inch.

7. The airfoil core of claim 1 , wherein the seventh pedestal mold column comprises:
a seventh column first group extending radially from the inner diameter surface, the seventh column first group comprising 6 seventh column first group pedestal molds each having a seventh column first group length between a range of 0.060 inch and 0.070 inch and a seventh column first group width between a range of 0.050 inch and 0.060 inch;
a seventh column second group extending radially from the seventh column first group, the seventh column second group comprising 5 seventh column second group pedestal molds each having a seventh column second group diameter between a range of 0.050 inch and 0.060 inch;
a seventh column third group extending radially from the seventh column second group, the seventh column third group comprising 10 seventh column third group pedestal molds each having a seventh column third group diameter between a range of 0.040 inch and 0.050 inch; and
a seventh column fourth group extending radially from the seventh column third group and to the outer diameter surface, the seventh column fourth group comprising 7 seventh column fourth group pedestal molds each having a seventh column fourth group diameter between a range of 0.050 inch and 0.060 inch.

8. The airfoil core of claim 1 , wherein the eighth pedestal mold column comprises:
an eighth column first group extending radially from the inner diameter surface, the eighth column first group comprising 7 eighth column first group pedestal molds each having an eighth column first group diameter between a range of 0.05 inch and 0.07 inch;
an eighth column second group extending radially from the eighth column first group, the eighth column second group comprising 5 eighth column second group pedestal molds each having an eighth column second group diameter between a range of 0.04 inch and 0.06 inch;
an eighth column third group extending radially from the eighth column second group, the eighth column third group comprising 11 eighth column third group pedestal molds each having an eighth column third group diameter between a range of 0.03 inch and 0.05 inch; and
an eighth column fourth group extending radially from the eighth column third group and to the outer diameter surface, the eighth column fourth group comprising 6 eighth column fourth group pedestal molds each having an eighth column fourth group diameter between a range of 0.04 inch and 0.06 inch.

9. An airfoil, comprising:
an airfoil body; and
an internal cavity within the airfoil body, the internal cavity comprising:
an outer edge comprising a first outer scallop and a second outer scallop;
an inner edge opposite the outer edge, the inner edge comprising a first inner scallop and a second inner scallop;
a leading edge spanning between the outer e

Assignees

• United Technologies Corp

Inventors

• Leon Jeffrey
• Nadeau Daniel C
• Levine Jeffrey R
• Kaufman Eleanor D
• Allen Richard N
• Molony Evan P
• Anselmi Gregory

Classifications

• F01D5/187 Primary

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• F05D2260/20

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