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US 11,000,899 B2Granted
Hollow airfoil construction utilizing functionally graded materials
AssigneeRaytheon Technologies Corporation
InventorsTahany Ibrahim El-Wardany, Wenjiong Gu, Daniel A. Mosher, Daniel V. Viens, Changsheng Guo
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Abstract
A method of forming an airfoil includes the steps of depositing material to form an airfoil in a first layer, and then depositing material in a second layer on the first layer. The first and second layers have distinct densities. An airfoil is also disclosed. The method provides powerful design advantages.
Claims19
A method of forming an airfoil comprising the steps of:
- depositing material to form the airfoil in a first layer, and then depositing material in a second layer on said first layer;
- wherein said first and second layers have distinct densities;
- and
- wherein the airfoil also comprises a first area, a second area, and a third area each having a distinct density, the distinct density of the first area being greater than the distinct densities of the second and third areas, said distinct density of the second area being greater than the distinct density of the third area, wherein said third area comprises webs formed between sidewalls defining said first and second areas.
1 more element
An airfoil comprising:
- an airfoil body extending between a radially inner end and a radially outer end, said airfoil being constructed by deposition of a plurality of layers, and
- said layers are deposited in changing densities, such that the density of said airfoil varies from said radially inner end to said radially outer end, said plurality of layers forming a first area, second area, and third area, said first area having a distinct density greater than distinct densities of said second area and third areas, said distinct density of the second area being greater than the distinct density of the third area, wherein said third area comprises webs formed between sidewalls of said first and second areas.
Dependencies are inferred from the claim text.