An inner door of a main landing gear of an aircraft comprises a door body composed of a door first section and a door second section, which are rotatably connected to each other relative to each other by a door connection. The hatch door body is pivotally connected to the fuselage of the aircraft at the hatch door second section by means of a rotating shaft, and the hatch door first section has a first curvature greater than a second curvature of the hatch door second section. The hatch door connection portion is configured to fail when a borne load is greater than or equal to a target load, and when a wheel of an undercarriage of an aircraft contacts and rests on the hatch door first section, the hatch door connection portion is subjected to a load greater than or equal to the target load. Therefore, the undercarriage inner cabin door provided by the invention can realize automatic separation of the main undercarriage and the inner cabin door under the condition that the main undercarriage is clamped in the inner cabin door of the main undercarriage, so that the execution of emergency release in an emergency is ensured. In addition, the invention further provides a civil aircraft with the main landing gear inner cabin door.

    一种飞机的主起落架内舱门,包括由舱门第一部段和舱门第二部段构成的舱门本体,它们通过舱门连接部可相对于彼此转动地连接到彼此。舱门本体在舱门第二部段处借助转轴可枢转地连接于飞机的机身,并且舱门第一部段具有的第一曲率大于舱门第二部段具有的第二曲率。舱门连接部构造为在所受的载荷大于或等于目标载荷时失效,而当飞机的起落架的机轮接触并搁置于舱门第一部段上时,舱门连接部会受到的载荷大于或等于该目标载荷。由此,本发明提出了一种在主起落架卡滞在主起落架内舱门的情况下能实现主起落架与该内舱门自动脱离的起落架内舱门,进而确保了紧急情况下应急放的执行。此外,本发明还提出了一种具有前述主起落架内舱门的民用飞机。


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    Title :

    Inner cabin door of main landing gear and airplane with inner cabin door


    Additional title:

    主起落架内舱门及具有该内舱门的飞机


    Contributors:
    HU JIE (author) / YUAN NINGNING (author) / HU XIANLONG (author)

    Publication date :

    2024-11-12


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B64C AEROPLANES , Flugzeuge



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