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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    Title :

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


    Additional title:

    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


    Contributors:

    Publication date :

    2019-12-04


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    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 | European Patent Office | 2019

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