An aircraft (5) comprising a wing (7) having a wing tip device (1) at the tip thereof. The wing tip device (1) is configurable between: a flight configuration for use during flight and a ground configuration in which the span of the wing (7) is reduced. The aircraft (5) further comprising a lock (13) for locking the wing tip device (1) in the flight configuration, and an actuator (3) for unlocking the lock (13) and for subsequently actuating the wing tip device (1) to the ground configuration. The actuator (3) is a two-stage hydraulic actuator, comprising a first hydraulic actuator stage (21) arranged to unlock the lock and a second hydraulic actuator stage (23) arranged to actuate the wing tip device (1) to the ground configuration. The first and second hydraulic actuator stages (21, 23) are arranged in series such that the second actuator stage (23) is unable to receive a hydraulic input feed until the first actuator stage (21) has been actuated to unlock the lock (13).


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    Title :

    A DUAL-PURPOSE LOCKING AND FOLDING ARRANGEMENT FOR AN AIRCRAFT WING TIP DEVICE


    Additional title:

    DOPPELFUNKTIONSVERRIEGLUNGS- UND FALTANORDNUNG FÜR EINE FLUGZEUGFLÜGELSPITZENVORRICHTUNG
    SYSTÈME DE VERROUILLAGE ET DE PLIAGE À DOUBLE FONCTION POUR UN DISPOSITIF D'EXTRÉMITÉ D'AILE D'AÉRONEF


    Contributors:

    Publication date :

    2019-06-12


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B64C AEROPLANES , Flugzeuge / F15B SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL , Druckmittelbetriebene Systeme allgemein



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