Ducted fans are widely used in unmanned aerial vehicles due to their high propulsive efficiency and safety. The aerodynamics are complex within the vicinity of the ground, including take-off, landing and hovering. In the present study, the aerodynamic stability of the ducted fan was studied with a modified Moore-Greitzer model to estimate and analyse the stability in ground effect. The model was validated and compared with three-dimensional unsteady simulations. The results indicated that the rotating stall occurred for the ducted fan in ground effect. The model results can be used to guide the design and control of the vehicles, to ensure the stability and safety of both the ducted fan and vehicles.


    Access

    Download


    Export, share and cite



    Title :

    A Moore-Greitzer Model for Ducted Fans in Ground Effect


    Contributors:
    Y. Jin (author) / Y. Fu (author) / Y. Qian (author) / Y. Zhang (author)


    Publication date :

    2020



    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    Unknown




    Multimodal Solutions to Augmented Moore-Greitzer Model and Rotating Stall

    Kumar, A. / Ananthkrishnan, N. / American Institute of Aeronautics and Astronautics | British Library Conference Proceedings | 2005



    Ducted fans

    Patterson, G.N. | Engineering Index Backfile | 1944


    Dynamics and Analysis of Higher Order Moore-Greitzer Model in Compression System

    Chunmei, Z. / Chao, Z. / Zili, X. | British Library Online Contents | 2007