The invention discloses a four-rotor aircraft provided with telescopic and foldable undercarriages. The four-rotor aircraft comprises an aircraft body, four rotor arms and four rotors, wherein the four rotor arms and the aircraft are combined into a cross-shaped structure; the four rotors are arranged on the four rotor arms respectively; grooves are formed in the lower surfaces of the rotor arms; the undercarriages are arranged in the grooves; each undercarriage comprises a hollow main body, a telescopic body, a driving motor and a lead screw; the driving motor and the lead screw are arranged in the hollow main body; one end of the main body is hinged to each rotor arm; one end of the telescopic body extends into the main body from the other end of the main body; the driving motor is used for driving the lead screw to rotate positively or negatively; the lead screw is used for driving the telescopic body to extend outwards or retract inwards along a cavity in the main body; the undercarriages in retraction states can be rotationally folded in the grooves. As the undercarriages have not only telescopic functions but also foldable functions, when the aircraft is positioned on the ground, the height of the aircraft body can be adjusted, and conveniences are brought to daily maintenance work.


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    Title :

    Four-rotor aircraft provided with telescopic and foldable undercarriages


    Contributors:
    ZHANG JIE (author)

    Publication date :

    2015-07-22


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B64C AEROPLANES , Flugzeuge



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