Linear electromechanical actuator and anti-jamming device

A linear electromechanical actuator, comprising:

• a main screw-nut assembly driven by a main motion device,
• an anti-jamming piston arranged coaxially within a hollow screw of the main screw-nut assembly and shiftable between an engaged position in which a plurality of locking dogs interfere with an abutting surface of the hollow screw and a disengaged position in which the anti-jamming piston is free to slide within the hollow screw;
• and
• actuating elements configured to shift the anti-jamming piston from the engaged position to the disengaged position upon electrical or mechanical failure of the linear electromechanical actuator, the actuating elements comprising a key axially movable between the engaged position and the disengaged position and comprising a locking section, configured to engage and bias the locking dogs into interference with the abutting surface in the engaged position, and an unlocking section, configured to allow the locking dogs to move away from the abutting surface and to allow free sliding of the anti-jamming piston within the hollow screw in the disengaged position.