Hybrid metal fan blade
US-9157327-B2 · Oct 13, 2015 · US
Aluminum airfoil with titanium coating
US2016201482A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016201482-A1 |
| Application number | US-201414915964-A |
| Country | US |
| Kind code | A1 |
| Filing date | Sep 2, 2014 |
| Priority date | Sep 17, 2013 |
| Publication date | Jul 14, 2016 |
| Grant date | — |
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- Title
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- Abstract
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Abstract
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An airfoil includes an aluminum airfoil body with a pressure side, suction side, leading edge and trailing edge; and a titanium foil layer covering at least part of one of the pressure side and the suction side.
First claim
Opening claim text (preview).
1 . An airfoil comprising: an aluminum airfoil body with a pressure side, suction side, leading edge and trailing edge; and a titanium foil layer covering at least part of one of the pressure side and the suction side. 2 . The airfoil of claim 1 , wherein the titanium foil layer covers the entire pressure side. 3 . The airfoil of claim 1 , wherein the titanium foil layer covers the entire suction side. 4 . The airfoil of claim 1 , wherein the titanium foil layer covers at least part of both of the pressure side and the suction side. 5 . The airfoil of claim 1 , wherein the titanium foil layer comprises: a first titanium foil sheet covering at least part of the pressure side; and a second titanium foil sheet covering at least part of the suction side. 6 . The airfoil of claim 1 , and further comprising: a sheath to define the leading edge of the airfoil. 7 . The airfoil of claim 5 , wherein the titanium foil layer extends under the sheath. 8 . The airfoil of claim 1 , wherein the titanium foil layer is about 0.127 mm (0.005 inches) thick. 9 . The airfoil of claim 1 , and further comprising: adhesive bonding the titantium foil layer to the airfoil. 10 . The airfoil of claim 8 , wherein the adhesive is scrim supported adhesive or weave supported adhesive. 11 . A method for making an airfoil comprising: treating the bonding surface of an aluminum airfoil; treating the bonding surface of a titanium foil sheet; placing an adhesive on the bonding surface of the aluminum airfoil; and pressing the titanium foil sheet onto the adhesive. 12 . The method of claim 11 , and further comprising: smoothing the surface of the titanium foil sheet. 13 . The method of claim 12 , and further comprising: autoclaving the airfoil. 14 . The method of claim 12 , wherein the step of smoothing the surface of the titanium foil sheet comprises: rolling the titanium foil 15 . The method of claim 11 , and further comprising: connecting a sheath to the airfoil. 16 . The method of claim 11 , wherein the step of treating the bonding surface of the airfoil comprises: phosphoric acid anodizing the bonding surface of the aluminum airfoil; and priming the bonding surface of the aluminum airfoil. 17 . The method of claim 11 , wherein the step of treating the bonding surface of a titanium foil sheet comprises: etching the bonding surface of the titanium foil sheet; and priming the bonding surface of the titanium foil sheet. 18 . The method of claim 11 , wherein the step of placing an adhesive on the bonding surfaces of the aluminum airfoil further comprises: inserting a scrim sheet or a weave into the adhesive. 19 . A titanium foil reinforced aluminum blade, the blade comprising: an aluminum blade with a leading edge, a trailing edge, a suction surface, a pressure surface, a root and a tip; a titanium foil sheet which covers at least some of at least one of the suction surface and the pressure surface. 20 . The blade of claim 19 , wherein the titanium foil sheet covers at least some of both the suction surface and the pressure surface.
Assignees
Inventors
Classifications
Titanium · CPC title
Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor · CPC title
Etching metallic material by chemical means (manufacture of printing surfaces B41C; manufacture of printed circuits H05K) · CPC title
in gas turbines · CPC title
Aluminium · CPC title
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US2016201482A1 cover?
- An airfoil includes an aluminum airfoil body with a pressure side, suction side, leading edge and trailing edge; and a titanium foil layer covering at least part of one of the pressure side and the suction side.
- Who is the assignee on this patent?
- United Technologies Corp
- What technology area does this patent fall under?
- Primary CPC classification F01D5/286. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Thu Jul 14 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).