The present invention relates to an unmanned aerial vehicle having a variable buoyancy device capable of preventing flight time reduction and velocity degradation of an unmanned aerial vehicle. The unmanned aerial vehicle having a variable buoyancy device comprises: a main body having a propeller installed on the outside of a body, and a skid installed on a lower portion of the body to alleviate an impact applied to the body when landing; and a buoyancy device installed on the skid to supply buoyancy to the main body. The buoyancy device includes: a foldable buoyancy part coupled to the skid; a valve installed on one side of the foldable buoyancy part; an upper surface support plate installed on the upper surface of the foldable buoyancy part; a lower surface support plate installed on the lower surface of the foldable buoyancy part; a magnetic force generation member which is installed on the upper surface support plate and the lower surface support plate, and generates a repulsive force for moving the upper surface support plate and the lower surface support plate away from each other and an attractive force for moving the upper surface support plate and the lower surface support plate towards each other; and a power supply unit to supply power to the magnetic force generation member.

    본 발명은 가변 부력장치를 구비한 무인 비행체에 관한 것으로, 몸체 외측에는 프로펠러가 설치되고, 착륙 시 몸체에 가해지는 충격을 완화하기 위해 상기 몸체의 하부에는 스키드가 설치된 본체; 및 상기 스키드에 설치되어 상기 본체에 부력을 제공하는 부력장치를 포함하고, 상기 부력장치는, 상기 스키드에 결합되는 접이식 부력구; 상기 접이식 부력구의 일 측에 설치된 밸브; 상기 접이식 부력구의 상면에 설치된 상면 지지판; 상기 접이식 부력구의 하면에 설치된 하면 지지판; 상기 상면 지지판과 하면 지지판에 각각 설치되고, 상기 본체의 동작 상태에 따라 상기 상면 지지판과 하면 지지판이 멀어지는 반발력 및 상기 상면 지지판과 하면 지지판이 가까워지는 인력을 생성하는 자기력 생성부재; 및 상기 자기력 생성부재에 전원을 공급하는 전원부를 포함한다.


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    Title :

    Unmanned Aerial Vehicle having Variable Buoyancy Device


    Additional title:

    가변 부력장치를 구비한 무인 비행체


    Contributors:

    Publication date :

    2020-06-10


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

    IPC:    B64C AEROPLANES , Flugzeuge / F16K VALVES , Ventile / H01F MAGNETS , Magnete



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