Patent ID: 11891912
Assignee: ROLLS-ROYCE PLC
Field: Other special machines (Mechanical engineering)
Classification: CPC B  F  Y | IPC B  F

Claim 0:
1. A method of repairing a composite blade comprising a composite part, a metal work, and an adhesive layer bonding the metal work to the composite part, the metal work comprising a bullet forming a leading edge of the composite blade, a first wing extending from the bullet, and a second wing extending from the bullet and opposing the first wing, the method comprising the steps of:
determining a locally damaged portion of the metal work;
removing a bullet portion corresponding to the locally damaged portion from a rest of the bullet;
detaching a first wing portion corresponding to the locally damaged portion from a rest of the first wing;
detaching a second wing portion corresponding to the locally damaged portion from a rest of the second wing;
debonding and removing the first wing portion from the composite part to obtain a first exposed surface portion of the composite part;
debonding and removing the second wing portion from the composite part to obtain a second exposed surface portion of the composite part;
reconditioning the first exposed surface portion of the composite part to obtain a first reconditioned surface portion of the composite part;
reconditioning the second exposed surface portion of the composite part to obtain a second reconditioned surface portion of the composite part;
applying a first adhesive layer to the first reconditioned surface portion;
applying a second adhesive layer to the second reconditioned surface portion; and
bonding a metal work patch to the first adhesive layer and the second adhesive layer, wherein the metal work patch comprises a bullet part corresponding to the bullet portion, a first wing part corresponding to the first wing portion, and a second wing part corresponding to the second wing portion.