Abstract: Vehicles commonly include control-surfaces and other components that are selectively moved during operation among a plurality of positions. Movement of aircraft control-surface components is crucial in flight, and an actuating assembly must consistently and dependably perform during normal operation and be prepared to survive situations outside normal operation and/or to compensate for circumstances causing loss of actuator control. Jam tolerant electromechanically operated actuation systems, of both the rotary and linear types, together with their methods of operation are described herein. Specifically, electrical jam-detection and control systems and associated locking and damping devices can be electrically and mechanically engaged and disengaged, are automatically reversible, and are testable.

Abstract: An electromechanical actuating assembly can have a redundant design with a first electric motor providing actuator-moving power via a first drive train and a second electric motor providing actuator-moving power via a second drive train. A first decoupling train can transmit decoupling power to decouple the first drive train from the actuator and a second decoupling train for transmit decoupling power to decouple the second drive train from the actuator. The assembly is operable in a fault-tolerant mode wherein actuator-moving power is transferred only through one drive train and the other drive train is decoupled from the actuator.

Abstract: An electromechanical actuating assembly (100), operable in a plurality of fault-tolerant modes to accommodate at least the most probable fault situations. In the M1D1-only mode, actuator-moving power is transferred only through the first drivetrain (400A) and decoupling power transmitted through the second decoupling train (600B) decouples the second drivetrain (400B) from the actuator (200). In the M2D2-only mode, actuator-moving power is transferred only through the second drivetrain (400B) and decoupling power transmitted through the first decoupling train (600A) decouples the first drivetrain (400A) from the actuator (200).

Abstract: Vehicles commonly include control-surfaces and other components that are selectively moved during operation among a plurality of positions. Movement of aircraft control-surface components is crucial in flight, and an actuating assembly must consistently and dependably perform during normal operation and be prepared to survive situations outside normal operation and/or to compensate for circumstances causing loss of actuator control. Jam tolerant electromechanically operated actuation systems, of both the rotary and linear types, together with their methods of operation are described herein. Specifically, electrical jam-detection and control systems and associated locking and damping devices can be electrically and mechanically engaged and disengaged, are automatically reversible, and are testable.

Abstract: An electromechanical actuating assembly (100) can have a redundant design with a first electric motor (300A) providing actuator-moving power via a first drive train (400A) and a second electric motor (300B) providing actuator-moving power via a second drive train (400B). A first decoupling train (600A) can transmit decoupling power to decouple the first drive train (400A) from the actuator (200) and a second decoupling train (600B) for transmit decoupling power to decouple the second drive train (400B) from the actuator (200). The assembly (100) is operable in a fault-tolerant mode wherein actuator-moving power is transferred only through one drive train (400A/400B) and the other drive train (400B/400A) is decoupled from the actuator (200).

Abstract: An electromechanical actuating assembly (100), operable in a plurality of fault-tolerant modes to accommodate at least the most probable fault situations. In the M1D1-only mode, actuator-moving power is transferred only through the first drivetrain (400A) and decoupling power transmitted through the second decoupling train (600B) decouples the second drivetrain (400B) from the actuator (200). In the M2D2-only mode, actuator-moving power is transferred only through the second drivetrain (400B) and decoupling power transmitted through the first decoupling train (600A) decouples the first drivetrain (400A) from the actuator (200).