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).
A DUAL-PURPOSE LOCKING AND FOLDING ARRANGEMENT FOR AN AIRCRAFT WING TIP DEVICE
DOPPELFUNKTIONSVERRIEGLUNGS- UND FALTANORDNUNG FÜR EINE FLUGZEUGFLÜGELSPITZENVORRICHTUNG
SYSTÈME DE VERROUILLAGE ET DE PLIAGE À DOUBLE FONCTION POUR UN DISPOSITIF D'EXTRÉMITÉ D'AILE D'AÉRONEF
2019-06-12
Patent
Electronic Resource
English
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