Method and repair kit for restoring a fastening assembly, repair kit, repaired fastening assembly and engine for an aircraft

DE102025101407A1Undetermined Publication Date: 2026-07-16MTU AERO ENGINES GMBH
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Patent Information

Application Number
DE102025101407
Authority / Receiving Office
DE · DE
Patent Type
Applications
Current Assignee / Owner
Filing Date
2025-01-16
Publication Date
2026-07-16

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Abstract

The invention relates to a method and a repair kit (1) for repairing a fastening arrangement in which a stud bolt connected to a first component (4) of the fastening arrangement has broken off. The repair kit (1) includes a repair screw element (14) with a screw element sleeve (20) and a screw element head (21) connected thereto. An internal thread (22) of the sleeve (20) corresponds to form a repair thread connection (23) with an external thread remnant (8) of a stud bolt remnant (5) of the former stud bolt.The repair thread connection (23) is formed between the external thread remnant (8) and the repair screw element (14) by inserting the screw element sleeve (20) through an opening arrangement (31) of a component assembly (9) and screwing it to the external thread remnant (8) by means of the sleeve's internal thread (22), the component assembly (9) being clamped between the screw element head (21) and the first component (4) of the repaired fastening assembly (2). The invention also relates to the repaired fastening assembly (2), which includes the broken stud and the repair kit (1), and to an aircraft engine (3) comprising the repaired fastening assembly (2).
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Citation Information

Patent Citations

  • Shielding device for turbine housing of thermal gas turbine, has restriction element for limiting flow channel in sections between high pressure side and low pressure side of turbine housing, where bar is arranged in flow channel

    DE102012200539A1

  • Procedure for the repair of punched elements using an expanding rivet and expanding rivet

    DE102016122448A1

  • Method for repairing damaged bolt

    WO2022031712A1