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US 8,105,042 B2Granted
Intermediate-manufactured composite airfoil and methods for manufacturing
AssigneeUnited Technologies Corporation
InventorsMichael Parkin, Phillip Alexander, Carl Brian Klinetob, Steven Clarkson
Life of this patent
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Abstract
An intermediate-manufactured composite airfoil includes first and second composite skins each having a plurality of fibers in a polymer matrix. A composite core is removably located between the first and second composite skins. The composite core includes a dry, three-dimensional, woven fiber network. The composite core may alternatively include a three-dimensional, woven fiber network in a fully cured polymer matrix.
Claims11
A method for manufacturing a composite airfoil, comprising:
- arranging a composite core removably between first and second composite skins in a mold, the first and second composite skins each including a plurality of fibers in a polymer matrix, and the composite core including a dry, three-dimensional, woven fiber network;
- transferring resin into the woven fiber network;
- and
- curing the resin to join the composite core and the first and second composite skins together.
1 more element
A method for manufacturing a composite airfoil, comprising:
- arranging a composite core removably between first and second composite skins, the first and second composite skins each including a plurality of fibers in a polymer matrix, and the composite core including a three-dimensional, woven fiber network in a fully cured polymer matrix;
- and
- joining the composite core and the first and second composite skins together.
Dependencies are inferred from the claim text.