The invention relates to a rotor craft, a blade of the rotor craft and an airfoil profile of the blade, the airfoil profile is composed of a front edge, a tail edge, an upper arc line and a lower arc line, the upper arc line and the lower arc line are located between the front edge and the tail edge, and the ratio of the maximum thickness of the airfoil profile to the chord length of the airfoil profile is that the maximum thickness is located; the ratio of the maximum camber of the airfoil to the chord length of the airfoil is that the maximum camber is located at the position; wherein, in the chord direction, the distance from the leading edge to the trailing edge, the values of which each have a maximum error of +/-3%. According to the technical scheme, a higher lift-drag ratio can be provided for the rotorcraft under a low Reynolds number, so that the aerodynamic efficiency of the rotorcraft is improved. Besides, due to the fact that the aerodynamic efficiency of the rotorcraft is improved, under the condition of the same lifting surface distribution, the needed rotating speed is lower, and noise generated in the flying process of the rotorcraft is possibly reduced.

    本公开涉及一种旋翼飞行器、旋翼飞行器的桨叶及其翼型,其中,翼型由前缘、尾缘以及位于前缘和尾缘之间的上弧线和下弧线构成,所述翼型的最大厚度与翼型的弦长之比为,最大厚度位于处;翼型的最大弯度与翼型的弦长之比为,最大弯度位于处;其中,是沿着弦线方向从前缘到尾缘的距离,、、的值分别具有±3%的最大误差。通过上述技术方案,能够为旋翼飞行器在低雷诺数下提供更高的升阻比,从而提高旋翼飞行器的气动效率。此外,由于旋翼飞行器气动效率提高,在同样的升力面分布的情况下,所需要的转速更低,使得减小旋翼飞行器飞行过程中产生的噪音成为可能。


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    Titel :

    Rotor craft, propeller blade of rotor craft and airfoil profile of propeller blade


    Weitere Titelangaben:

    旋翼飞行器、旋翼飞行器的桨叶及其翼型


    Beteiligte:
    MAO YINIAN (Autor:in) / ZHOU DONGYUE (Autor:in) / JIANG XINHONG (Autor:in) / CHU ZHENG (Autor:in) / GAO AOLIN (Autor:in) / YANG FANG (Autor:in) / LIU JINLAI (Autor:in) / MA CONG (Autor:in) / ZHAO LONGZHI (Autor:in) / LIU LU (Autor:in)

    Erscheinungsdatum :

    2021-06-18


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    B64C AEROPLANES , Flugzeuge



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