Blade comprising a trailing edge having three distinct cooling regions
US-2018306035-A1 · Oct 25, 2018 · US
Multi-walled airfoil core
US11015457B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11015457-B2 |
| Application number | US-201816202483-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 28, 2018 |
| Priority date | Oct 1, 2018 |
| Publication date | May 25, 2021 |
| Grant date | May 25, 2021 |
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- Title
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- Abstract
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- First independent claim
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Abstract
Official abstract text for this publication.
A method of forming an airfoil, includes forming a hybrid skin core, a tip flag core, and a trailing edge core. The hybrid skin core, tip flag core, and trailing edge core are connected to form a first core portion. A leading edge core and a serpentine core are formed. The first core portion, the leading edge core, and the serpentine core are assembled together to form an airfoil core. An airfoil is formed around the airfoil core.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method of forming an airfoil, comprising: forming a hybrid skin core, a tip flag core, and a trailing edge core, wherein the hybrid skin core, tip flag core, and trailing edge core are connected to form a first core portion; forming a leading edge core and a serpentine core, the leading edge core and the serpentine core are separate from the first core portion; assembling the first core portion, the leading edge core, and the serpentine core together to form an airfoil core; inserting a rod into the leading edge core before forming the airfoil and the rod extends to a feature radially outward of the tip flag core; and forming an airfoil around the airfoil core after the inserting the rod. 2. The method of claim 1 , wherein the airfoil is formed by investment casting. 3. The method of claim 1 , wherein the hybrid skin core, tip flag core, trailing edge core, leading edge core, and serpentine core are injection molded. 4. The method of claim 3 , wherein e trailing edge core and the hybrid skin core are formed concurrently in a first die. 5. The method of claim 4 , wherein the tip flag core, trailing edge core, and hybrid skin core are formed concurrently in the first die. 6. The method of claim 5 , wherein the first core portion is a contiguous core portion. 7. The method of claim 3 , wherein the leading edge core and the serpentine core are formed concurrently in a second die. 8. The method of claim 7 , wherein the second core portion is a contiguous core portion. 9. The method of claim 1 , wherein the leading edge core and the serpentine core are connected to form a second core portion. 10. The method of claim 1 , wherein the rod is removed after forming the airfoil to form a port near a leading edge of the airfoil. 11. The method of claim 1 , wherein the assembling the airfoil core comprises inserting a rod into the serpentine core and the tip flag core. 12. The method of claim 1 , wherein the airfoil core contains one of ceramic, alumina, silica, and a metallic alloy.
Assignees
Inventors
Classifications
Efficient propulsion technologies, e.g. for aircraft · CPC title
Multipart cores · CPC title
Cores; Manufacture or installation of cores {(breaker cores B22C9/084)} · CPC title
by its peculiarity of shape; of works of art {(cylinders, pistons B22D15/02)} · CPC title
in gas turbines · CPC title
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Frequently asked questions
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- What does patent US11015457B2 cover?
- A method of forming an airfoil, includes forming a hybrid skin core, a tip flag core, and a trailing edge core. The hybrid skin core, tip flag core, and trailing edge core are connected to form a first core portion. A leading edge core and a serpentine core are formed. The first core portion, the leading edge core, and the serpentine core are assembled together to form an airfoil core. An airfo…
- Who is the assignee on this patent?
- United Technologies Corp, Raytheon Tech Corp
- What technology area does this patent fall under?
- Primary CPC classification F01D5/189. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue May 25 2021 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 6 related publications on this page (citations in our corpus or others sharing the same primary CPC).