Repair method for inter-layer delamination of fiber-wound shell of solid-propellant rocket engine

The invention discloses a repair method for inter-layer delamination of fiber-wound shell of a solid-propellant rocket engine. The repair method comprises the steps that a defective area and the depthare determined; the position of an opening of an insulating layer is determined according to the defective area; an opening is formed in the insulating layer located in the defective area; whether the two openings communicated with the defective area is checked, glue is injected into the defective area for repair, and rolling is conducted in the glue injection process to ensure that the defectivearea is full of the glue; after glue injection is completed, a suction pipe is dismantled, a vacuum bag is manufactured in a whole repair area for vacuumizing, and the repair area is pressurized through a supporting tool; and solidification is conducted, the supporting tool is removed, and pits in the insulating layer are repaired. Glue injection is used for repair, so that damage to the surfaceof the insulating layer is