A strong interest in highly-efficient, small-scale propeller configurations can be recognized, especially due to the currently growing number of and usage possibilities for unmanned aerial vehicles (UAVs). Although a variety of different propulsion concepts already exist on the market or are discussed in the literature, there is still a demand for a systematic investigation to compare such configurations, in particular, small-scale propellers with a fixed pitch, which are analyzed in this work. Therefore, different configurations of small-scale propellers with a fixed pitch are analyzed in this paper. They were operated as isolated single propellers and as ducted propellers in a cylindrical wing. Furthermore, due to their flight envelope, UAVs are likely to operate at highly inclined inflow conditions and even under reverse inflow. These non-axial inflow conditions have a major influence on the flow field around a propeller. In order to investigate this influence, all analyses were performed at a range of inflow angles in relation to the propeller axis from αdisc = 0° to 180°. © 2020 by the authors.


    Access

    Download


    Export, share and cite



    Title :

    A Comparison of Isolated and Ducted Fixed-Pitch Propellers under Non-Axial Inflow Conditions


    Contributors:

    Publication date :

    2020-09-01



    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English



    Classification :

    DDC:    620 / 629




    Characteristics of Ducted Propellers

    McMahon, J. F. / SNAME / Ships Machinery Committee | British Library Conference Proceedings | 1994



    Computational Approximations for Ducted Propellers

    Brown, J. B. / Greeley, D. S. / SNAME et al. | British Library Conference Proceedings | 1994


    Ducted propellers and their use

    Lazareff, M. | Engineering Index Backfile | 1963