This study explores the best vibration reduction using an individual blade control (IBC) actuation scheme for a lift-offset coaxial helicopter in high-speed flight. The rotorcraft dynamics analysis model consists of coaxial, three-bladed counter-rotating rotors and a finite element fuselage stick model constructed based on the measured data of the XH-59A helicopter. The XH-59A helicopter is well-known for its severe vibration level encountered during the flight (over 0.5 g ), leading to the cancellation of the development program. A special focus is given to assessing the accuracy and efficiency of the integrated rotor–body vibration predictions evaluated between the one-way and two-way coupling methods in reference to the flight data of the vehicle. The two-way rotor–body coupled results show excellent correlations with the test data for rotor blade loads and airframe vibrations. The best actuation scenarios are then sought for the minimum vibration at the rotor hub and the pilot seat. The IBC pitch actuation effectively reduces the vibrations at both locations of the rotorcraft. Specifically, a multiple-harmonic IBC actuation enables to suppress the pilot seat vibration by 93% compared to the uncontrolled case, achieving a significantly reduced vibration level (below 0.05 g ).


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Individual Blade Control Approach for Active Vibration Suppression of a Lift-Offset Coaxial Rotorcraft


    Beteiligte:
    Hong, Seong Hyun (Autor:in) / Kim, Dong Kyun (Autor:in) / Jung, Sung Nam (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    2024-04-02


    Format / Umfang :

    10 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




    Lift offset management and control systems for coaxial rotorcraft

    WULFF OLE / GEIGER DEREK | Europäisches Patentamt | 2017

    Freier Zugriff

    LIFT OFFSET MANAGEMENT AND CONTROL SYSTEMS FOR COAXIAL ROTORCRAFT

    WULFF OLE / GEIGER DEREK | Europäisches Patentamt | 2018

    Freier Zugriff

    LIFT OFFSET MANAGEMENT AND CONTROL SYSTEMS FOR COAXIAL ROTORCRAFT

    WULFF OLE / GEIGER DEREK | Europäisches Patentamt | 2016

    Freier Zugriff

    Modeling and control of lift offset coaxial and tiltrotor rotorcraft

    Berger, Tom / Juhasz, Ondrej / Lopez, Mark J. S. et al. | Online Contents | 2019


    Modeling and control of lift offset coaxial and tiltrotor rotorcraft

    Berger, Tom / Juhasz, Ondrej / Lopez, Mark J. S. et al. | Springer Verlag | 2020