Method of unblocking an aircraft wheel brake
AssigneeMessier-Bugatti-Dowty
InventorPhilippe Chico
Life of this patent
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Abstract
The invention provides a method of unblocking an aircraft wheel brake having at least one electromechanical actuator 5 with at least one electric motor and a pusher 10 movable under drive from the motor facing friction elements 8 of the brake in order to apply a braking force selectively against the friction elements 8, the actuator 5 being provided with a blocking member 12 for blocking the pusher in position, at least after the actuator has been operated to apply a parking brake force. According to the invention, the unblocking method comprises the steps of: connecting an external control unit to the brake, the external control unit being adapted to act at least on the blocking member 12 of the actuator; and using the external control unit to cause the blocking member 12 to unblock the pusher.
Claims6
A method of unblocking an aircraft wheel brake performed by an operator on the ground, the brake having at least one electromechanical actuator (5) with at least one electric motor and a pusher (10) movable under drive from the motor facing friction elements (8) of the brake in order to apply a braking force selectively against the friction elements (8), the actuator (5) being provided with a blocking member (12) for blocking the pusher (10) in position, at least after the actuator has been operated to apply a parking brake force, the unblocking method being characterized in that it comprises the steps of:
- the operator on the ground bringing an external control unit (25) to the proximity of the wheel in such a way that the operator on the ground can connect the external control unit (25) to the brake,
- connecting the external control unit (25) to the brake, the external control unit being adapted to act at least on the blocking member (12) of the actuator;
- and
- using the external control unit (25) to cause the blocking member (12) to unblock the pusher (10), the blocking member (12) having power supplied exclusively by the external control unit (25).
An external control unit (25) separate from an aircraft and configured for being brought into the proximity of an aircraft wheel by an operator on the ground in order to control a brake of the wheel, the brake including at least one electromechanical actuator (5) with at least one electric motor and a pusher (10) movable under drive from motor facing friction elements (8) of the brake in order to apply a braking force selectively against the friction elements (8), the actuator being provided with a blocking member (12) for blocking the pusher (10) in position, at least after the actuator has been operated to apply a parking brake force, the unit (25) comprising:
- at least one electrical energy source (28),
- brake connection means (26, 27) for connection of the unit to the brake, and
- control means (29) powered by the energy source (28) and adapted to act at least on the blocking member (12) of the brake via the brake connection means in order to unblock the pusher (10),
- wherein the blocking member (12) has power supplied exclusively by the external control unit (25).
Dependencies are inferred from the claim text.