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US 9,790,800 B2Granted
Method of forming an inflated aerofoil
AssigneeROLLS-ROYCE plc
InventorDavid Adrian Quigley
Life of this patent
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Abstract
There is proposed a method of forming an inflated aerofoil (1), the method comprising the steps of: forming a layered, planar pre-form (30); providing at least one stress-relieving opening (44, 45, 46, 47) through the pre-form; hot creep forming and inflating the pre-form (30) to form an intermediate aerofoil; and subsequently removing material from the intermediate aerofoil, including at least a region containing the or each stress-relieving opening (44, 45, 46, 47), to form a finished aerofoil.
Claims20
A method of forming an inflated aerofoil, the method comprising the steps of:
- forming a layered, planar pre-form;
- providing at least one stress-relieving opening through the pre-form;
- hot creep forming and inflating the pre-form to form an intermediate aerofoil;
- and subsequently removing material from the intermediate aerofoil, including at least a region containing the or each stress-relieving opening, to form a finished aerofoil.
1 more element
Dependencies are inferred from the claim text.