A stoppable helicopter rotor with circulation control was investigated in the Ames 40 by 80 foot wind tunnel. The model was tested as a rotating wing, a fixed wing, and during transition start/stop sequences. The capability of the model's control system to maintain pitch and roll moment balance during the start/stop sequence, the ability of the blades to withstand the start/stop loads, the adequacy of the control system to maintain balance in the helicopter mode, and the control system capabilities in the fixed-wind mode were assessed. Time-history data of several start/stop sequences of the X-wing rotor, and the steady-state data relating to the model as both a rotor and as a fixed-wing aircraft are presented. In addition, stability data are presented which were acquired during open-loop and closed-loop tests of the hub moment feedback control system.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen


    Exportieren, teilen und zitieren



    Titel :

    Investigation of a Stoppable Helicopter Rotor with Circulation Control


    Beteiligte:
    J. D. Ballard (Autor:in) / J. L. Mccloud (Autor:in) / T. J. Forsyth (Autor:in)

    Erscheinungsdatum :

    1980


    Format / Umfang :

    372 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch




    Removable and stoppable display

    HARMON MATTHEW J / HIRSCH LUKAS / TAJMAHAR HAKAN Z | Europäisches Patentamt | 2025

    Freier Zugriff

    An investigation of a stoppable helicopter rotor with circulation control

    Ballard, J. D. / Mccloud, J. L., III / Forsyth, T. J. | NTRS | 1980



    Emergency Control for a Circulation-Control Helicopter Rotor

    Fischer, William C. / Arifian, Kenneth C. / Lawrence, Tom H. | NTRS | 1987