To develop a highly efficient propeller for small-scale unmanned aerial vehicles, the influences of induced and profile losses determined by design parameters are investigated at R e < 10 4 . The propeller blade shapes, such as chord length and twist angle distributions in the spanwise direction, are determined using the Adkins–Liebeck method. For a fixed designated thrust value and a forward velocity, the influences of a propeller normalized radius, a blade number, and a tip speed ratio on the propeller performance are discussed. Results show that the profile loss can be larger than the induced loss. For such a case, it is beneficial to reduce the blade number and the propeller rotational speed to increase the blade chord length and the Reynolds number; consequently, the propeller efficiency increases even if the induced drag increases.


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    Titel :

    Propeller Design and Loss Mechanisms in Low-Reynolds-Number Flows


    Beteiligte:
    Yonezawa, Koichi (Autor:in) / Abe, Kento (Autor:in) / Sunada, Shigeru (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    2016-06-06


    Format / Umfang :

    8 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch






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