Adhesive-reinforced aluminum hollow fan blade for bonded cover retention
AssigneeRtx Corporation
InventorsJohn Harner, Xiaomei Fang, Kerry E. Muenchow, John Austin Bayliff, Andrew Hathcock, Rachel Boislard, David J. Mathiau, Jr.
Life of this patent
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Abstract
Disclosed herein is a blade for an engine comprising a blade cover and a blade body. A first adhesive bond is disposed between the blade cover and the blade body. A second adhesive layer is disposed on a surface of the blade cover and a periphery of the blade body that surrounds the blade cover. The second adhesive layer is in a protective relationship with portions of the first adhesive bond that are exposed to the atmosphere in the absence of the second adhesive layer.
Claims16
A blade for an engine comprising:
- a blade cover;
- a blade body;
- a first adhesive bond disposed between the blade cover and the blade body;
- where the first adhesive bond comprises a polyurethane elastomer;
- a polyepoxide adhesive disposed on an entire surface of the blade cover and an entire surface of the blade body;
- where the polyepoxide adhesive is in a protective relationship with portions of the first adhesive bond that are exposed to the atmosphere in the absence of the polyepoxide adhesive.
A method for manufacturing a blade for an engine comprising:
- applying a layer of adhesive precursor to an inner surface of a blade cover;
- applying the inner surface of the blade cover to a blade body;
- curing the layer of adhesive precursor to form a first adhesive bond between the blade cover and the blade body;
- where the first adhesive bond comprises a polyurethane elastomer;
- applying a polyepoxide adhesive to an entire surface of the blade cover, that is opposed to the inner surface, and an entire surface of the blade body;
- where the polyepoxide adhesive is in a protective relationship with portions of the first adhesive bond that are exposed to the atmosphere in the absence of the polyepoxide adhesive.
Dependencies are inferred from the claim text.