GOODRICH ACTUATION SYSTEMS SAS

A linear actuator includes a housing, a piston rod having a longitudinal axis (A-A) and at least one locking arrangement. The piston rod is axially moveable in a first direction (D 1 ) relative to the housing to extend the piston rod and is axially moveable in a second direction (D 2 ) relative to the housing to retract the piston rod. The piston rod is rotatable about the longitudinal axis relative to the housing between an operational state and a locking state. Each locking arrangement includes a piston rod flange extending from the piston rod and a housing flange extending from the housing. When the piston rod is in the operational state, the or each housing flange does not overlap with the or each piston rod flange so as to allow axial movement of the piston rod in the first and second directions.

A control system includes: an actuator piston having an end cap, the actuator piston being reversibly translatable; a supporting member coupled to the end cap, the supporting member being configured to couple the end cap to a sensor; and a retaining device configured to maintain the coupling between the end cap and the supporting member when the end cap fails.

A sealing arrangement for the interface between a fluidic load and a motor. The sealing arrangement includes: a rotating shaft having a shaft body extending along an axis (A) and having a first end, configured to, in use, be in driving engagement with a fluidic load, and a second end configured to, in use, be in engagement with a motor for rotation by the motor, the rotating shaft and a shoulder extending radially outwards from the shaft body at the first end. The sealing arrangement further includes: a first, major seal extending radially around the shaft; a second, minor seal axially spaced from the first seal towards the second end and mounted around the shaft, and a seal holder block located between the first seal and the second seal around the shaft body.

A flight control surface actuation system includes a rotary actuator having an output part configured to rotate about an axis (R-R), a connecting rod for connecting a flight control surface to the rotary actuator, and a connection mechanism connecting a first end of the connecting rod to the output part such that rotation of the output part about the axis causes at least part of the connection rod to rotate about the axis. The connection mechanism comprises a connection structure fixed to the output part and an engagement part mounted for rotation about a longitudinal axis. The engagement part extends through the connecting rod and is fixed to it. A position sensor is arranged to measure the angular displacement of the first end of the connecting rod about the axis.

An electromechanical actuator assembly operable in a plurality of modes. The EMA assembly includes: an electrical motor having a motor shaft extending along an axis (A) of the EMA, the motor driving the shaft to rotate about the axis; a gear assembly mounted around, and in geared connection with the shaft, to rotate with the shaft; an EMA output connected to the gear assembly such that rotation of the motor shaft causes rotation of the output via the gear assembly, the output rotating at a speed which is a predetermined fraction of the speed of rotation of the motor shaft based on the gear ratio of the gear assembly.

A secondary load path assembly includes: a secondary load path comprising: a plate; a secondary nut; and a transfer plate secured to the plate and configured to connect the plate and the secondary nut in load transfer engagement. The transfer plate has an opening therethrough, an axis defined through the opening, and the secondary nut protruding axially through the opening; wherein, in a state in which load is not transmitted via the secondary load path, a clearance is provided between the secondary nut and the opening. The assembly also includes a locking unit configured to lock the secondary nut to the transfer plate when load is to be transmitted through the secondary path, the locking unit comprising a lock arranged to axially move to a lock position in which it is located in the clearance between the secondary nut and the opening to lock the secondary nut to the transfer plate.

A kit of parts to provide a reconfigurable epicyclic gear system, The kit of parts includes at least one sun gear; a planet carrier; a plurality of sets of planet gears configured to be mounted on the planet carrier and to mesh with the at least one sun gear; and a plurality of ring gears configured to mesh with the plurality of sets of planet gears; wherein the at least one sun gear, the plurality of sets of planet gears and the plurality of ring gears all have the same modulus such that they can be arranged in different configurations that each produce a different output torque.

An epicyclic gear assembly includes: a sun gear rotatable about an axis (A); a plurality of planetary gears arranged around and in meshing engagement with the sun gear such that rotation of the sun gear about its axis causes corresponding rotation of each of the planetary gears about their own axes; and an outer ring gear arranged around and in meshing engagement with the plurality of planetary gears such that rotation of the planetary gears causes rotation of the outer ring gear about the axis A and relative to the fixed outer rings. The assembly also includes a backlash reduction mechanism between the planetary gears and the outer ring gear. The backlash reduction mechanism includes a planetary gear carrier with a plurality of carrier segments each carrying a respective one of the planetary gears, the segments together defining an annular carrier having a bore therethrough.

A generic remote electronic unit, RUE, configured to provide control signals to selectively drive either one of a hydraulic actuator or an electric actuator. The generic REU includes circuit boards comprising command and monitoring circuits common to both hydraulic actuators and electric actuators, and being further configured to be programmed with software specific to an actuator to be controlled.

A linear actuator. The linear actuator includes a screw shaft. The linear actuator also includes: a nut assembly mounted to the screw shaft to move linearly along the screw shaft as the screw shaft is rotated; and a motor to rotate the screw shaft. The motor is an axial motor.