Substrate with Shaped Cooling Holes and Methods of Manufacture
First Claim
Patent Images
1. A combustor liner with shaped cooling apertures comprising:
- a combustor liner having an inlet surface and an exit surface;
an inlet having a first curvilinear segment, a second curvilinear segment and at least two linear segments;
a bore extending from said inlet aperture toward said exit surface to a transition point;
an outlet extending from said transition point to said exit surface, said outlet having a first curvilinear segment, a second curvilinear segment and at least two linear segments;
said inlet having a first area and said outlet having a second area, wherein said second area is greater than said first area.
1 Assignment
0 Petitions
Accused Products
Abstract
A substrate having one or more shaped effusion cooling holes formed therein. Each shaped cooling hole has a bore angled relative to an exit surface of the combustor liner. One end of the bore is an inlet formed in an inlet surface of the combustor liner. The other end of the bore is an outlet formed in the exit surface of the combustor liner. The outlet has a shaped portion that expands in only one dimension. Also methods for making the shaped cooling holes.
32 Citations
17 Claims
-
1. A combustor liner with shaped cooling apertures comprising:
-
a combustor liner having an inlet surface and an exit surface; an inlet having a first curvilinear segment, a second curvilinear segment and at least two linear segments; a bore extending from said inlet aperture toward said exit surface to a transition point; an outlet extending from said transition point to said exit surface, said outlet having a first curvilinear segment, a second curvilinear segment and at least two linear segments; said inlet having a first area and said outlet having a second area, wherein said second area is greater than said first area. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. An aircraft engine component, comprising:
-
a substrate positioned adjacent an air flow, said substrate having an inlet surface, an outlet surface and a cooling aperture; said inlet surface having an inlet, said inlet defined by a first curvilinear segment, a second curvilinear segment and first and second linear segments extending between said first and second curvilinear segments; a bore extending from said inlet toward said outlet surface at a preselected angle; an outlet formed in said outlet surface defined by a first curvilinear segment, a second curvilinear segment and first and second linear segments extending between said first and second curvilinear segments; said inlet defining a first area and said outlet defining a second area, wherein said first area is less than said second area; and wherein said second area expands in a single dimension from said first area to said second area. - View Dependent Claims (9, 10, 11, 12)
-
-
13. A method of forming a shaped cooling hole in a combustor liner, comprising:
-
drilling a center bore at a center location with a laser from an outlet toward an inlet; pulsing said laser a first time while moving said laser to a first side of said center location; stopping said first pulsing and moving said laser to said center location; pulsing said laser a second time while moving said laser to a second side of said center location; stopping said second pulsing and moving said laser to said center location; trepanning said laser to control size and shape of a cooling hole.
-
-
14. A method of forming a cooling aperture, comprises:
-
drilling a center bore at a preselected angle from an exit surface toward an inlet surface through a substrate; pulsing said laser, a first series while moving one of said laser and said substrate in a first direction relative to a center line of said bore; stopping said pulsing said laser said first series and moving said one of said laser and said substrate; pulsing said laser and second series while moving said one of said laser and said substrate in a second direction relative to said center line of said bore; stopping said pulsing said laser said second series and moving said one of said laser and said substrate; trepanning said laser to form said substantially oval shaped inlet. - View Dependent Claims (15, 16, 17)
-
Specification