The invention belongs to the technical field of airplane propeller design, and relates to a low-noise propeller. The parameters of the propeller are as follows: the number of blades of the propeller is 3; the diameter of the propeller is 1770 to 1970 mm; all sections of the blades adopt airfoil ARA-D; when the relative radius is 0.3, the sweepback is 53-59mm, the chord length is 126-131 mm, and the torsional angle is 17-22 degrees; when the relative radius is 0.6, the sweepback is 43-48mm, the chord length is 98-103mm, and the torsional angle is 1-6 degrees; when the relative radius is 0.8, the sweepback is 33-39 mm, the chord length is 76-82 mm, and the torsional angle is-5 degrees to 0 degree; when the relative radius is 0.95, the sweepback is 21-26 mm, the chord length is 57-63 mm, and the torsional angle is-9 degrees to-4 degrees; the propeller meets the index requirement that the far-field noise is not larger than 66 dB under the conditions that the maximum flight speed is 50 m/s, the maximum flight height is 5000 m and the cruising efficiency is 83%.

    本发明属于飞机螺旋桨设计技术领域,涉及一种低噪声螺旋桨。所述的螺旋桨参数如下:螺旋桨桨叶数为3;螺旋桨直径1770~1970mm;桨叶各切面采用翼型ARA‑D;相对半径为0.3时,后掠为53~59mm,弦长为126~131mm,扭角为17°~22°;相对半径为0.6时,后掠为43~48mm,弦长为98~103mm,扭角为1°~6°;相对半径为0.8时,后掠为33~39mm,弦长为76~82mm,扭角为‑5°~0°;相对半径为0.95时,后掠为21~26mm,弦长为57~63mm,扭角为‑9°~‑4°;该螺旋桨满足在最大飞行速度50m/s,最大飞行高度5000m,巡航效率83%的条件下,远场噪声不大于66dB的指标要求。


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    Titel :

    Low-noise propeller


    Weitere Titelangaben:

    一种低噪声螺旋桨


    Beteiligte:
    CHEN LIZHI (Autor:in) / LI BING (Autor:in) / YE XIAOMENG (Autor:in) / LIU YUFENG (Autor:in) / QU XIAOYAO (Autor:in)

    Erscheinungsdatum :

    2022-06-17


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    B64C AEROPLANES , Flugzeuge



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    Small aircraft propeller noise with ducted propeller

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    NASA propeller noise research

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