The invention provides a main landing gear cabin door mechanism, an aircraft and a folding and unfolding method. The main undercarriage cabin door mechanism comprises a left cabin door and a right cabin door, one end of the left cabin door is provided with a first retractable driving mechanism, one end of the right cabin door is provided with a second retractable driving mechanism, and a small cabin door is hinged to the side, close to the right cabin door, of the left cabin door; the small cabin door and the left cabin door are provided with third folding and unfolding driving mechanisms which can respectively drive the small cabin door and the left cabin door to rotate; in the first position, the left cabin door and the right cabin door are both in a vertical state, and the small cabin door and the left cabin door are folded and overlapped; and at the second position, the left cabin door, the small cabin door and the right cabin door are horizontally positioned on the same plane. The small cabin door can be independently retracted and folded, after the cabin door is opened, the folded small cabin door can reduce the windward area of the cabin door in the put-down state, the pneumatic load borne by the cabin door is reduced, and the design of a driving mechanism for retracting and releasing the cabin door is lighter.

    本发明提供一种主起落架舱门机构、飞行器及收放方法。所述主起落架舱门机构包括左舱门和右舱门,所述左舱门的一端设有第一收放驱动机构,所述右舱门的一端设有第二收放驱动机构,所述左舱门靠近右舱门的一侧铰接有小舱门,所述小舱门和左舱门上设有能分别驱动小舱门和左舱门转动的第三收放驱动机构;在第一位置时,左舱门和右舱门均为竖直状态,小舱门与左舱门折叠重合;在第二位置时,左舱门、小舱门和右舱门水平并位于同一平面上。本发明的小舱门可独立收放折叠,在舱门打开后,折叠的小舱门能够减小舱门放下状态的迎风面积,并减小了舱门所受的气动载荷,使舱门收放的驱动机构的设计更轻便。


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    Title :

    Main landing gear cabin door mechanism, aircraft and folding and unfolding method


    Additional title:

    一种主起落架舱门机构、飞行器及收放方法


    Contributors:
    ZHANG CHENGLIANG (author) / JIAO FUJUN (author) / LI WANG (author) / YU XINPENG (author) / XIAO MINGHANG (author) / HE WEI (author) / TAN FENG (author)

    Publication date :

    2025-02-28


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B64C AEROPLANES , Flugzeuge / E05F DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION , Vorrichtungen zum Bewegen der Flügel in die Offen- oder Schließstellung / E06B Feste oder bewegliche Abschlüsse für Öffnungen in Bauwerken, Fahrzeugen, Zäunen oder ähnlichen Einfriedungen allgemein, z.B. Türen, Fenster, Läden, Tore , FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES, OR LIKE ENCLOSURES, IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES



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