A vertical axis wind turbine with a symmetric airfoil having a concavely curved tail portion defining a trailing edge angle of between 0° and 5° on either side of the chord, a maximum thickness center point between 26% and 34% of the length of the chord from the leading edge, a leading edge curvature ratio (D1/D2) from 0.42 to 0.50, and a ratio of maximum thickness to chord length T/C from 0.12 to 0.19, preferably 0.16. Advantageously, the rotor may have helical blades defining a cylindrical swept envelope with a positive angle of attack and a solidity ratio NC/D from 0.125 to 0.270, and is governed at a tip speed ratio from 2.25 to 4.00.


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    Titel :

    Vertical axis wind turbine rotor and airfoil


    Beteiligte:
    BLAIZE MICHAEL (Autor:in)

    Erscheinungsdatum :

    23.05.2017


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    IPC:    B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING / F01D Strömungsmaschinen [Kraft- und Arbeitsmaschinen oder Kraftmaschinen], z.B. Dampfturbinen , NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES / F03D Windkraftmaschinen , WIND MOTORS / F04D Strömungsarbeitsmaschinen , NON-POSITIVE-DISPLACEMENT PUMPS



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    Rainbird, John / Peiro, Joaquim / Graham, J. Michael | AIAA | 2017


    Post-stall airfoil performance and vertical-axis wind turbines

    Graham, J.M.R. / Peiro, Joaquim / Rainbird, John M. | AIAA | 2015


    TOWERLESS VERTICAL-AXIS WIND TURBINE

    ENNIS BRANDON / PAQUETTE JOSHUA | Europäisches Patentamt | 2020

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