The paper presents a study of the flight dynamics of an articulated rotor helicopter carrying a suspended load. The aircraft model includes rigid body dynamics, individual flap and lag blade dynamics, and inflow dynamics. The load is a point mass with a single suspension point. Results were obtained for load masses of up to 2000 kg, with load-to-helicopter mass ratios of up to 28 %, cable lengths from 3 m to 8 m, turn rates of up to 16 deg/sec, and advance ratios of up to 0.3. The load affects trim primarily through the overall increase in the weight of the aircraft; the influence of cable length is negligible. Substantial coupling can occur between the Dutch roll and the load modes. Because of this coupling, the Dutch roll damping can decrease with a deterioration of handling qualities. The effects on the phugoid are very small. A suspended load modifies the roll frequency response by adding a notch to the gain curves and a 180-degree jump in the phase curves at the pendulum frequencies of the load. The changes in bandwidth and phase delay are small.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Flight dynamics of an articulated rotor helicopter with an external slung load


    Weitere Titelangaben:

    Die Flugdynamik eines Gelenkrotor-Hubschraubers mit einer externen Pendellast


    Beteiligte:
    Fusato, D. (Autor:in) / Guglieri, G. (Autor:in) / Celi, R. (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    2001


    Format / Umfang :

    11 Seiten, 20 Bilder, 1 Tabelle, 19 Quellen




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch




    Flight Dynamics of an Articulated Rotor Helicopter with an External Slung Load

    Fusato, D. / Celi, R. / Guglieri, G. et al. | British Library Conference Proceedings | 1999



    HELICOPTER FLIGHT TEST EVALUATION OF AN ACTIVELY STABILIZED EXTERNAL SLUNG LOAD

    Alexander, M. / Craig, G. / Perron, E. et al. | British Library Conference Proceedings | 2020


    Helicopter Slung Load Stablization Using a Flight Director

    Mamers, M. / Bower, G. / American Helicopter Society | British Library Conference Proceedings | 2005


    HELICOPTER FLIGHT TEST EVALUATION OF AN ACTIVELY STABILIZED EXTERNAL SLUNG LOAD

    Alexander, M. / Craig, G. / Perron, E. et al. | TIBKAT | 2020