The invention relates to an actuator (4) for a flight control surface (3) of an aircraft, comprising: —a fixed annulus (9, 10) which can be fixed to a fuselage (2) of the aircraft, —an annulus (11) capable of rotating with respect to the fixed annulus (9, 10) about an axis of rotation (X), —an output ring (12) which can be fixed to the control surface (3), and —a coupling mechanism (30) comprising a disc (31, 32) with translational mobility with respect to the mobile annulus (11) in a direction parallel to the axis of rotation (X), the disc (31, 32) being able to move between an engaged position, in which the disc (31, 32) is engaged both with the mobile annulus (11) and the output ring (12) so as to connect the output ring (12) to the mobile annulus (11), and a disengaged position, in which the disc (31, 32), is disengaged from the mobile annulus (11) so as to disconnect the output ring (12) from the mobile annulus (11), a retaining piece (47, 48) capable of keeping the disc (31, 32) in the engaged position, and a rupture member (34) which can be activated in order to break the retaining piece (47, 48) so as to allow the disc (31, 32) to be moved into the disengaged position.
AIRCRAFT FLIGHT CONTROL SURFACE ACTUATOR
2017-10-26
Patent
Electronic Resource
English
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