The invention discloses a long-endurance unmanned aerial vehicle high lift-drag ratio laminar flow airfoil profile, which comprises a laminar flow airfoil profile body, the laminar flow airfoil profile body comprises an upper airfoil surface, a lower airfoil surface, a front edge and a rear edge, the upper airfoil surface is convex upwards, the lower airfoil surface comprises a first part and a second part, the first part is convex downwards, and the second part is bent in an S shape from the rear edge; the radius of the front edge is 1.43% c, the maximum thickness position of the front edge is 40.00% c, the maximum thickness of the front edge is 17.21% c, the maximum camber of the front edge is 4.87% c, the maximum camber position of the front edge is 44.90% c, the thickness of the rear edge is 0.20% c, and c is the chord length of the airfoil; the laminar flow airfoil profile has the characteristics of high lift force, high lift-drag ratio and moderate stall characteristic, has high lift-drag ratio and cruising efficiency under a high design lift force coefficient, a low flight speed and a large Reynolds number range, is large in airfoil profile thickness, and is beneficial to wing structure design and oil tank arrangement.

    本发明公开了一种长航时无人机高升阻比的层流翼型,包括层流翼型本体,所述层流翼型本体包括上翼面、下翼面、前缘及后缘,所述上翼面呈上凸状,所述下翼面包括第一部分及第二部分,第一部分向下凸出,所述第二部分至后缘呈S型弯曲;所述前缘的半径为1.43%c,最大厚度位置为40.00%c,最大厚度为17.21%c,最大弯度为4.87%c,最大弯度位置为44.90%c,后缘的厚度0.20%c,其中“c”为翼型弦长;使得层流翼型具有高升力、高升阻比、失速特性缓和的特点,在较高的设计升力系数、较低的飞行速度和较大雷诺数范围下,具有较高的升阻比和巡航效率,且翼型厚度较大,有利于机翼结构设计和油箱布置。


    Access

    Download


    Export, share and cite



    Title :

    Laminar flow airfoil profile with high lift-drag ratio for long-endurance unmanned aerial vehicle


    Additional title:

    一种长航时无人机高升阻比的层流翼型


    Contributors:
    SUN YADONG (author) / CHEN LIN (author) / CHEN PENGYU (author)

    Publication date :

    2024-09-20


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B64U / B64C AEROPLANES , Flugzeuge



    High-altitude long-endurance unmanned aerial vehicle layout with ultrahigh lift-drag ratio

    LI CHUNPENG / SUN JUE / MA HAI et al. | European Patent Office | 2023

    Free access

    Low-resistance laminar flow airfoil applied to high-altitude high-speed long-endurance unmanned aerial vehicle

    YAO JIEKE / FENG WENLIANG / CHEN BIN et al. | European Patent Office | 2020

    Free access

    Novel airfoil profile for low-speed long-endurance unmanned aerial vehicle

    LIU KE / YUAN YONG / LI WEI et al. | European Patent Office | 2024

    Free access

    Medium-sized unmanned aerial vehicle with high lift-drag ratio

    WANG JINGHUAN / WANG CHENXIAN / LIANG YANG et al. | European Patent Office | 2021

    Free access

    High-lift wing suitable for long-endurance fixed-wing unmanned aerial vehicle and unmanned aerial vehicle

    ZHANG YANTAI / FU YIWEI / ZHAO JIAXIANG | European Patent Office | 2024

    Free access