The invention discloses a high-lift-force laminar flow aerofoil profile with a low-resistance and high-drag-divergence Mach number. The radius of a leading edge is 0.025, a maximum camber of 0.031 exists at a 52.8% chord-length position of the airfoil profile, and a maximum thickness of 0.150 exists at a 40.5% chord-length position of the airfoil profile. Because the radius of the leading edge of the aerofoil profile is large, a large favorable pressure gradient is ensured, and the favorable pressure gradient is kept at about 10% of that of the leading edge; the upper surface of the aerofoil profile is in a suitable small-curvature shape, thereby avoiding the rapid recovery of pressure; after the pressure of the leading edge is minimum, in a 20% chord length range, a situation that the pressure distribution pattern has a small adverse pressure gradient is allowed, and the remarkable weak inverse pressure in the section both keeps the stable development of a laminar flow area and facilitates the pressure recovery of a trailing edge, so that an airflow, after being slowed down slowly, enters a stable and linear smooth accelerating process again. The maximum camber position and maximum thickness position of the aerofoil profile relatively stand backwards, so that a situation that a small section of smooth favorable pressure gradient exists behind the weak adverse pressure is ensured, thereby facilitating the continued development of a laminar region, and increasing the lift force.


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    Titel :

    High-lift-force laminar flow aerofoil profile with low-resistance and high-drag-divergence Mach number


    Beteiligte:
    GAO ZHENGHONG (Autor:in) / XIA LU (Autor:in) / ZUO YINGTAO (Autor:in) / LI JING (Autor:in) / ZHAO KE (Autor:in) / WANG CHAO (Autor:in) / ZHAO HUAN (Autor:in)

    Erscheinungsdatum :

    10.06.2015


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    IPC:    B64C AEROPLANES , Flugzeuge



    Measurements of maximum lift on 26 aerofoil sections at high mach number

    Großbritannien, Aeronautical Research Council | TIBKAT | 1953


    Aerofoil profile drag

    Andrews, W.R. | Engineering Index Backfile | 1938


    Aerofoil profile drag

    Andrews, W.R. | Engineering Index Backfile | 1938



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