Fundamental limitations on the forward flight speed of compound helicopters are of such a nature as to suggest that further increases in forward flight speed may be obtained by reducing main rotor RPM and altering basic rotor geometry.Reducing rotor RPM to a fraction of normal operating RPM allows higher flight speeds as a “slowed-rotor” configuration. Complete stopping of the rotor allows higher flight speeds as a “stopped-lifting rotor” configuration. And finally, complete stopping of the rotor with subsequent in flight blade folding allows higher flight speeds as a “folded-rotor” configuration. All configurations exhibit common aeroelastic design criteria which require additional rotor structural weight to provide higher forward velocities. Each configuration has mechanical and aerodynamic requirements peculiar to the type which also result in empty weight and fuel weight differences.By assessing the several empty weight and fuel weight differences which are exhibited by the three subject configurations, the optimum speed range for each configuration may be identified.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Stopped and Slow Rotor Aircraft Configuration


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Celniker, L. (Autor:in) / Donham, R. E. (Autor:in) / Carlson, R. M. (Autor:in)

    Kongress:

    Aeronautic and Space Engineering and Manufacturing Meeting ; 1965



    Erscheinungsdatum :

    01.02.1965




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Stopped and slow rotor aircraft configurations

    Celniker, L. / Carlson, R.M. / Donham, R.E. | Engineering Index Backfile | 1965


    Stopped rotor aircraft

    VANDER LIND DAMON / HORN GREGORY MAINLAND | Europäisches Patentamt | 2018

    Freier Zugriff

    STOPPED ROTOR AIRCRAFT

    VANDER LIND DAMON / HORN GREGORY MAINLAND | Europäisches Patentamt | 2017

    Freier Zugriff

    STOPPED ROTOR AIRCRAFT

    VANDER LIND DAMON / HORN GREGORY MAINLAND | Europäisches Patentamt | 2018

    Freier Zugriff

    STOPPED ROTOR AIRCRAFT

    VANDER LIND DAMON / HORN GREGORY MAINLAND | Europäisches Patentamt | 2017

    Freier Zugriff