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US 10,294,797 B2Granted
Fan blade assembly
AssigneeUnited Technologies Corporation
InventorSean A. Whitehurst
Life of this patent
Estimating the term…
Abstract
The present disclosure relates generally to a fan blade assembly. In an embodiment, the fan blade assembly includes an airfoil having a forward edge covered by a sheath. The airfoil and the sheath are made from dissimilar conductive materials. A nonconductive coating is applied the an airfoil contact surface of the sheath before it is bonded to the leading edge of the airfoil.
Claims17
A fan blade assembly, comprising:
- a conductive airfoil including a forward airfoil edge;
- a conductive sheath including an airfoil contact surface, the airfoil contact surface coated with a nonconductive material, wherein the nonconductive material comprises a ceramic;
- and
- an adhesive disposed on at least a portion of the nonconductive material to bond the conductive sheath to the conductive airfoil at the airfoil contact surface, wherein the nonconductive material is applied to the airfoil contact surface prior to the bonding of the sheath to the airfoil;
- and wherein
- the conductive airfoil comprises a first metal;
- the conductive sheath comprises a second metal;
- and
- the first metal is different than the second metal.
6 more elements
A fan blade assembly, comprising:
- a conductive airfoil including a forward airfoil edge;
- a conductive sheath including an airfoil contact surface, the airfoil contact surface coated with a nonconductive material;
- and
- an adhesive disposed on at least a portion of the nonconductive material to bond the conductive sheath to the conductive airfoil at the airfoil contact surface, wherein the nonconductive material comprises a ceramic.
1 more element
A gas turbine engine, comprising in serial flow communication:
- a fan section including a fan blade assembly, the fan blade assembly comprising:
- a conductive airfoil including a forward airfoil edge;
- a conductive sheath including an airfoil contact surface, the airfoil contact surface coated with a nonconductive material, wherein the nonconductive material comprises a ceramic;
- and
- an adhesive disposed on at least a portion of the nonconductive material to bond the conductive sheath to the conductive airfoil at the airfoil contact surface, wherein the nonconductive material is applied to the airfoil contact surface prior to the bonding of the sheath to the airfoil;
- and wherein the conductive airfoil comprises a first metal;
- the conductive sheath comprises a second metal;
- and
- the first metal is different than the second metal;
- a compressor section;
- a combustor section;
- and
- a turbine section.
10 more elements
Dependencies are inferred from the claim text.