An unmanned aerial vehicle according to the present invention may comprise: a rotor-blade for providing thrust according to generation of main stream; and a safety guard disposed to surround the rotor-blade. The safety guard may comprise: a guide member which is disposed coaxially with the rotor-blade while having a gap between the guard member and the end of the rotor-blade, so as to stabilize, when the rotor-blade rotates, a flow field suctioned by a negative pressure, and stably boost a discharge flow when the pressure is changed to a positive pressure; and a diffuser which is disposed coaxially with and radially spaced apart from the guide member, and generates a secondary flow toward the main stream to increase a flow rate.

    L'invention concerne un véhicule aérien sans pilote pouvant comprendre : une pale de rotor pour fournir une poussée en fonction de la génération d'un flux principal ; et une protection de sécurité disposée de façon à entourer la pale de rotor. La protection de sécurité peut comprendre : un élément de guidage qui est disposé de manière coaxiale avec la pale de rotor, avec un espace entre l'élément de protection et l'extrémité de la pale de rotor, de manière à stabiliser, lorsque la pale de rotor tourne, un champ d'écoulement aspiré par une pression négative et amplifier de manière stable un écoulement de décharge lorsque la pression est changée en une pression positive ; et un diffuseur qui est disposé de manière coaxiale avec l'élément de guidage et espacé radialement de celui-ci et génère un écoulement secondaire vers le flux principal pour augmenter un débit.

    본 발명에 따른 무인 비행기는 메인 스트림 발생에 따른 추력을 제공하는 로터-블레이드 및 상기 로터-블레이드를 감싸게 배치되는 세이프티 가드를 포함할 수 있다. 상기 세이프티 가드는 상기 로터-블레이드와 동축으로 설치되되, 상기 로터-블레이드 단부와 간극을 가지게 배치되어서, 상기 로터-블레이드 회전 시, 부압으로 흡입되는 유동장을 안정화시키고, 정압으로 변경 시에 토출 유동을 안정적으로 밀어주는 가이드 부재 및 상기 가이드 부재와 동축으로 방사 방향으로 이격되게 배치되며, 상기 메인 스트림쪽으로 2차 유동을 발생시켜서 유량을 증대시키는 디퓨져를 포함할 수 있다.


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    Title :

    UNMANNED AERIAL VEHICLE COMPRISING SAFETY GUARD


    Additional title:

    VÉHICULE AÉRIEN SANS PILOTE COMPRENANT UNE PROTECTION DE SÉCURITÉ
    세이프티 가드를 구비한 무인 비행기


    Contributors:
    KANG YONGHUN (author) / PARK JUNHO (author) / JUNG SEUNGHWAN (author) / YANG SOOSANG (author) / JUNG SANGJUN (author)

    Publication date :

    2019-10-31


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

    IPC:    B64C AEROPLANES , Flugzeuge



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