Systems and methods of operating a tiltrotor aircraft (100) include providing a control system (200) that includes sensors (204, 206) and/or gauges (208) that provide feedback regarding hub shear forces in rotor systems (108) of the aircraft (100) that produce aeroelastic instability known as whirl flutter. Feedback from the sensors (204, 206) and/or gauges (208) is communicated to a flight control subsystem (202) that includes an algorithm that provides a cascading set of responses to control whirl flutter and a failsafe that adjusts operational characteristics of the aircraft (100) in response to the continuation or excitation of the whirl flutter.


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    Titel :

    TILT ROTOR FLAP WHIRL STABILITY CONTROL WITH HUB SHEAR FEEDBACK FOR HIGH SPEED AIRCRAFT


    Weitere Titelangaben:

    KIPPROTORKLAPPENWIRBELSTABILITÄTSREGELUNG MIT NABENSCHERRÜCKMELDUNG FÜR HOCHGESCHWINDIGKEITSFLUGZEUG
    CONTRÔLE DE LA STABILITÉ AU TOURBILLONNEMENT DES VOLETS D'UN ROTOR BASCULANT COMPORTANT UNE RÉTROACTION DE CISAILLEMENT DU MOYEU POUR AÉRONEF À GRANDE VITESSE


    Beteiligte:

    Erscheinungsdatum :

    2019-12-04


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    IPC:    B64C AEROPLANES , Flugzeuge / G05D SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES , Systeme zum Steuern oder Regeln nichtelektrischer veränderlicher Größen



    Tilt Rotor Flap Whirl Stability with Hub Shear Feedback for High Speed Aircraft

    KIM SUNG / CHOI JOUYOUNG JASON / STAMPS FRANK BRADLEY | Europäisches Patentamt | 2019

    Freier Zugriff

    Stabilizing pylon whirl flutter on a tilt-rotor aircraft

    VORWALD, JOHN / CHOPRA, INDERJIT | AIAA | 1991


    Whirl Test of a Large Scale High Authority Active Flap Rotor

    Lorber, P.F. / O Neill, J.J. / Isabella, B. et al. | British Library Conference Proceedings | 2010


    Swashplate feedback control for tilt-rotor aircraft

    Alexander, H. R. / Magee, J. P. / Morris, J. J. | NTRS | 1974