A helicopter is disclosed with a system for controlling main-rotor torque which reduces the power and size requirements of conventional anti-torque means. The torque countering forces are generated by disrupting the main rotor downwash flowing around the fuselage. The downwash flow is separated from the fuselage surface by a strake positioned at a specified location on the fuselage. This location is determined by the particular helicopter wash pattern and fuselage configuration, generally being located between 20 deg before top dead center (TDC) and 80 deg from TDC on the fuselage side to which the main rotor blade approaches during rotation. The strake extends along the fuselage from the cabin section to the aft end and can be continuous or separated for aerodynamic surfaces such as a horizontal stabilizer.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen


    Exportieren, teilen und zitieren



    Titel :

    Helicopter Anti-Torque System Using Strakes


    Beteiligte:
    H. L. Kelley (Autor:in) / J. C. Wilson (Autor:in) / A. E. Phelps (Autor:in)

    Erscheinungsdatum :

    1984


    Format / Umfang :

    12 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch




    Helicopter Anti-Torque System Using Strakes

    Kelley, H. L. / Wilson, J. C. / Phelps, A. E. | NTRS | 1984


    Helicopter Anti-Torque System Using Fuselage Strakes

    H. L. Kelley / J. C. Wilson | NTIS | 1987


    Helicopter anti-torque system using fuselage strakes

    Kelley, Henry L. / Wilson, John C. | NTRS | 1987



    Helicopter Tail-Boom Strakes

    Kelley, H. L. / Phelps, A. E., III / Wilson, J. C. | NTRS | 1986