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US 2020/0346302 A1Published application
Welding method for hollow airfoils and intermediate body
AssigneeUnited Technologies Corporation
InventorRobert C. Dolan
Life of this patent
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Abstract
A method of forming an airfoil includes the steps of (a) providing an airfoil body with a hollow having at least one rib extending to an outer surface, and forming the outer surface of the rib to have at least one groove connecting a hollow pocket within a boundary defined by the rib to a location outwardly of the rib, (b) placing a cover over the hollow, and (c) welding the cover to the airfoil body, and such that the rib is welded to the blade cover. An intermediate airfoil body is also disclosed.
Claims20
A method of forming an airfoil comprising the steps of:
- (a) providing an airfoil body with a hollow having at least one rib extending to an outer surface, and forming said outer surface of said rib to have at least one groove connecting a hollow pocket within a boundary defined by the rib to a location outwardly of the rib;
- (b) placing a cover over said hollow;
- and
- (c) welding said cover to said airfoil body, and such that said rib is welded to said blade cover.
1 more element
An intermediate airfoil body comprising:
- an airfoil shape having a hollow chamber including a plurality of ribs, with at least a portion of one of said ribs defining an interior space, and said one of said ribs including at least one groove connecting an inner pocket surface within said one of said ribs to a location outward of said one of said ribs.
Dependencies are inferred from the claim text.