A method for repairing composite parts of an aircraft

摘要

A method of repairing an area (13) on a surface (11) of a portion of composite material (10) of an aircraft, the method comprising the steps of: a) applying a patch fiber (14) pre-impregnated with curable resin the box (13) to be repaired; b) applying onto the patch (14) a heating cover (16) and an air tight membrane (19) and apply a sealing element in a closed loop (18) on the surface (11) surrounding the area (13) it will be repaired; c) heating the patch through the heater cover and applying a vacuum between the membrane and the surface (11) such that compression of the patch against the surface (11) occurs while an inflatable chamber is pressurized (20) acts against the membrane (19) so that the patch (14) against the area (13) to be repaired is pressed, wherein the step of pressurizing the inflatable bladder is carried out by pressurizing a concave body (21) rubber seal attached to the membrane (19), incorporating the body concave internal inextensible reinforcement (25), and wherein the step of applying vacuum includes sucking air through a valve (26) passing through the membrane (19) in a position external to the inflatable bladder (20) so that a vacuum is created in a space (27) defined between the membrane (19), the surface (11) and the sealing element (18 ); wherein the depressurized space (27) which is delimited by the sealing element in a closed loop (18) extends over a surface with an area at least three times that of the inflatable bladder (20).