A hole in an aircraft panel (e.g. wing cover access hole) is reinforced against fatigue by bonding a frustoconical reinforcement member 20 to the panel 10 using an adhesive 70. These are compressed together using an assembly comprising a compression member 40, a resilient rubber washer 50, a support plate 30, and a clamping bolt 62. The compression member 40 has a frustoconical wall portion of complementary shape to the reinforcement member. The support plate 30 can have a heater for curing the adhesive used to bond the annular reinforcement member to the panel, and a protrusion (38, fig 2c) to help centre the reinforcement member 20 during assembly. The panel 10 and reinforcement member 20 can be metal (e.g. aluminium), composite, wood or plastic.


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    Title :

    Reinforced holes


    Contributors:

    Publication date :

    2022-08-31


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B29C Formen oder Verbinden von Kunststoffen , SHAPING OR JOINING OF PLASTICS / B64C AEROPLANES , Flugzeuge



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