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US 10,648,482 B2Granted
Method of manufacturing a fan blade
AssigneeUnited Technologies Corporation
InventorsJames T. Roach, Grant O. Cook, III
Life of this patent
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Abstract
The present disclosure relates to a method of manufacturing composite airfoils bonded to a metallic root. A composite body may be formed with a metallic co-molded member. The co-molded member may be transient liquid phase (TLP) bonded to a metallic root. The metallic root may allow the composite body to be attached to a rotor. The airfoil may also have a metallic edge which is TLP bonded to the composite body via a co-molded edge.
Claims5
A method of manufacturing a fan blade comprising:
- providing a metallic root;
- providing a metallic leading edge;
- providing a first co-molded member;
- providing a second co-molded member;
- co-molding a composite body and the second co-molded member;
- providing a metallic interlayer between the second co-molded member and the metallic root;
- and
- heating a bonding region comprising the interlayer to a bonding temperature, wherein the interlayer diffuses into at least one of the second co-molded member and the metallic root, wherein the heating results in a bond between the second co-molded member and the metallic root, and
- maintaining the bonding temperature until the interlayer has isothermally solidified,
- wherein the composite body comprises a laminated structure bounded by the first co-molded member and the second co-molded member,
- wherein the metallic leading edge is bonded to the first co-molded member, and
- wherein each of the first co-molded member and the second co-molded member comprises at least one of a metal, a ceramic matrix composite or a metal composite and is coupled to the composite body by at least one of interleaves, stitching, weaving, adhesive and interlock.
9 more elements
Dependencies are inferred from the claim text.