In order to reduce noise, the invention proposes an airfoil profile (30) for an aircraft (10), such as an unmanned aerial system (11). The airfoil profile (30) comprises a leading edge portion (31) and a trailing edge portion (32) that are spaced apart along a chordwise direction, an airfoil centroid (33); and an upper airfoil surface (40) and a lower airfoil surface (50). The airfoil surfaces (40, 50) are shaped such that the pressure center (Cp) of the lifting force is arranged at the same chord location as the airfoil centroid (33) or closer to the trailing edge portion (32) along the chordwise direction than the airfoil centroid (33). With this, a pitchdown momentum is generated that urges the leading edge portion (31) towards a lower angle of attack (AoA).


    Access

    Download


    Export, share and cite



    Title :

    PROPELLER BLADE USING AN AIRFOIL PROFILE


    Additional title:

    PROPELLERBLATT MIT EINEM TRAGFLÄCHENPROFIL
    PALE D'HÉLICE UTILISANT UN PROFIL AÉRODYNAMIQUE


    Contributors:

    Publication date :

    2025-04-02


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B64C AEROPLANES , Flugzeuge



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

    MAO YINIAN / ZHOU DONGYUE / JIANG XINHONG et al. | European Patent Office | 2021

    Free access

    Propeller blade profile

    CHEN FENG / ZAN BINGHE / ZENG QINGJUE et al. | European Patent Office | 2024

    Free access

    Propeller blade or airfoil with hollow composite root

    D 'ASSIER PIERRE JEAN FEVRE / POUSTEC CLEMENT PIERRE / MASON VINCENT et al. | European Patent Office | 2024

    Free access

    Full Range Airfoil Polars for Propeller Blade Element Momentum Analysis

    Morgado, J. / Silvestre, M. / Pascoa, J. | British Library Conference Proceedings | 2013


    Propeller blade or airfoil with root wound with composite material

    DASSEL PIERRE JEAN FAVRE / POUSTEC CLEMENT PIERRE / CHARRIER FRANCOIS et al. | European Patent Office | 2024

    Free access