Methods, apparatus, systems and articles of manufacture are disclosed for redundant actuation of control surfaces. An example apparatus includes a control surface of an aircraft, and an actuator to move the control surface. The example apparatus also includes an electric motor to move the actuator; the electric motor communicatively coupled to an electrical system of the aircraft. The example apparatus also includes a hydraulic motor to move the actuator, the hydraulic motor fluidly coupled to a hydraulic system of the aircraft. The example apparatus also includes a sensor to detect incorrect operation of the hydraulic system. The example apparatus also includes a switch operatively coupled to the sensor, the switch to enable operation of the electric motor in response to the detected incorrect operation of the hydraulic system.

A variable camber trim unit (100) comprises a housing (124), an input gear (102), and an output gear (108). The input gear (102) and the output gear (108) are rotatably supported by the housing (124). The variable camber trim unit (100) is selectively configurable to one of a coupled configuration or a decoupled configuration. When the variable camber trim unit (100) is in the coupled configuration, rotation of the input gear (102) relative to the housing (124) causes rotation of the output gear (108) relative to the housing (124). When the variable camber trim unit (100) is in the decoupled configuration, rotation of the input gear (102) relative to the housing (124) does not cause rotation of the output gear (108) relative to the housing (124), and the output gear (108) is capable of at least 5° and no more than 15° of rotation relative to the housing (124).

A variable camber trim unit (100) comprises a housing (124), an input gear (102), and an output gear (108). The input gear (102) and the output gear (108) are rotatably supported by the housing (124). The variable camber trim unit (100) is selectively configurable to one of a coupled configuration or a decoupled configuration. When the variable camber trim unit (100) is in the coupled configuration, rotation of the input gear (102) relative to the housing (124) causes rotation of the output gear (108) relative to the housing (124). When the variable camber trim unit (100) is in the decoupled configuration, rotation of the input gear (102) relative to the housing (124) does not cause rotation of the output gear (108) relative to the housing (124), and the output gear (108) is capable of at least 5° and no more than 15° of rotation relative to the housing (124).

A variable camber trim unit (100) comprises a housing (124), an input gear (102), and an output gear (104). The input gear (102) and the output gear (108) are rotatably supported by the housing (124). The variable camber trim unit (100) is selectively configurable to one of a coupled configuration or a decoupled configuration. When the variable camber trim unit (100) is in the coupled configuration, rotation of the input gear (102) relative to the housing (124) causes rotation of the output gear (108) relative to the housing (124). When the variable camber trim unit (100) is in the decoupled configuration, rotation of the input gear (102) relative to the housing (124) does not cause rotation of the output gear (108), and the output gear (108) is rotationally fixed relative to the housing (124).

A variable camber trim unit (100) comprises a housing (124), an input gear (102), and an output gear (104). The input gear (102) and the output gear (108) are rotatably supported by the housing (124). The variable camber trim unit (100) is selectively configurable to one of a coupled configuration or a decoupled configuration. When the variable camber trim unit (100) is in the coupled configuration, rotation of the input gear (102) relative to the housing (124) causes rotation of the output gear (108) relative to the housing (124). When the variable camber trim unit (100) is in the decoupled configuration, rotation of the input gear (102) relative to the housing (124) does not cause rotation of the output gear (108), and the output gear (108) is rotationally fixed relative to the housing (124).

A variable camber trim unit comprises a housing, an input gear, and an output gear. The input gear and the output gear are rotatably supported by the housing. The variable camber trim unit is selectively configurable to one of a coupled configuration or a decoupled configuration. When the variable camber trim unit is in the coupled configuration, rotation of the input gear relative to the housing causes rotation of the output gear relative to the housing. When the variable camber trim unit is in the decoupled configuration, rotation of the input gear relative to the housing does not cause rotation of the output gear relative to the housing, and the output gear is capable of at least 5° and no more than 15° of rotation relative to the housing.

A variable camber trim unit comprises a housing, an input gear, and an output gear. The input gear and the output gear are rotatably supported by the housing. The variable camber trim unit is selectively configurable to one of a coupled configuration or a decoupled configuration. When the variable camber trim unit is in the coupled configuration, rotation of the input gear relative to the housing causes rotation of the output gear relative to the housing. When the variable camber trim unit is in the decoupled configuration, rotation of the input gear relative to the housing does not cause rotation of the output gear relative to the housing, and the output gear is capable of at least 5° and no more than 15° of rotation relative to the housing.

A variable camber trim unit comprises a housing, an input gear, and an output gear. The input gear and the output gear are rotatably supported by the housing. The variable camber trim unit is selectively configurable to one of a coupled configuration or a decoupled configuration. When the variable camber trim unit is in the coupled configuration, rotation of the input gear relative to the housing causes rotation of the output gear relative to the housing. When the variable camber trim unit is in the decoupled configuration, rotation of the input gear relative to the housing does not cause rotation of the output gear, and the output gear is rotationally fixed relative to the housing.

A variable camber trim unit comprises a housing, an input gear, and an output gear. The input gear and the output gear are rotatably supported by the housing. The variable camber trim unit is selectively configurable to one of a coupled configuration or a decoupled configuration. When the variable camber trim unit is in the coupled configuration, rotation of the input gear relative to the housing causes rotation of the output gear relative to the housing. When the variable camber trim unit is in the decoupled configuration, rotation of the input gear relative to the housing does not cause rotation of the output gear, and the output gear is rotationally fixed relative to the housing.

An integrated asymmetric brake system for an aircraft includes a housing and a control surface actuator arranged in the housing. The control surface actuator includes a torque limiter output member and is operable to selectively deploy and retract a control surface. An asymmetry brake system is arranged in the housing and is operably connected to the control surface actuator and the torque limiter output member. The asymmetry brake system is selectively operable to prevent deployment of the control surface by activating the torque limiter output member upon detecting an asymmetry event. An asymmetry brake test monitor switch is mounted in the housing and operably coupled to the asymmetry brake system. The asymmetry brake test monitor switch is monitored to confirm functionality of the asymmetry brake system prior to flight.