Abstract: A system for handling an aircraft on a nautical vessel includes a plurality of winches each associated with a corresponding one of a plurality of electromotors and a plurality of cables associated with the plurality of winches. Each of the plurality of cables is configured to attach to an aircraft positioned on a deck of the nautical vessel. A control system is configured to receive a target aircraft hauling speed and direction and operate the winches to achieve the target speed in the selected direction while maintaining load on the aircraft to below a maximum limit and also maintaining the cables in tension.

Abstract: A system for handling an aircraft on a nautical vessel includes a plurality of winches each associated with a corresponding one of a plurality of electromotors and a plurality of cables associated with the plurality of winches. Each of the plurality of cables is configured to attach to an aircraft positioned on a deck of the nautical vessel. A control system is configured to receive a target aircraft hauling speed and direction and operate the winches to achieve the target speed in the selected direction while maintaining load on the aircraft to below a maximum limit and also maintaining the cables in tension.

Abstract: A gearbox test rig is provided for testing first and/or second gearboxes having power ratings of 1 MW or more. The gearbox test rig comprises a first coupler for coupling a low-speed shaft of a first gearbox to a low-speed shaft of a second gearbox such that forces can be transmitted between the low-speed shafts of the first and second gearboxes. The gearbox test rig further comprises a second coupler for coupling a high-speed shaft of the first gearbox to a high-speed shaft of the second gearbox such that forces can be transmitted between the high-speed shafts of the first and second gearboxes, wherein the second coupler comprises a hydraulic rotary actuator for regulating a torque which is applied to the high-speed shafts of the first and second gearboxes. Such a gearbox test rig is particularly useful for testing heavy duty gearboxes, such as those used in wind turbines.

Abstract: An actuator (10) for use in controlling movement of a component (22) of a seagoing vessel comprises a cylinder (12) for coupling to a vessel hull (14) and an actuator shaft (18). A distal end (20) of the shaft (18) is coupled to the component whose movement is to be controlled and, in use, a control force (Fc) is applied to the shaft (18) to control movement of the shaft (18) from a first position, retracted, position to a second, extended, position. The actuator (10) is compliant in response to an opposing force exceeding a selected force to prevent or mitigate damage to the component (22) and/or the actuator 10 which may otherwise result from the opposing force.

Abstract: A gearbox test rig is provided for testing first and/or second gearboxes having power ratings of 1 MW or more. The gearbox test rig comprises a first coupler for coupling a low-speed shaft of a first gearbox to a low-speed shaft of a second gearbox such that forces can be transmitted between the low-speed shafts of the first and second gearboxes. The gearbox test rig further comprises a second coupler for coupling a high-speed shaft of the first gearbox to a high-speed shaft of the second gearbox such that forces can be transmitted between the high-speed shafts of the first and second gearboxes, wherein the second coupler comprises a hydraulic rotary actuator for regulating a torque which is applied to the high-speed shafts of the first and second gearboxes. Such a gearbox test rig is particularly useful for testing heavy duty gearboxes, such as those used in wind turbines.

Abstract: An actuator (10) for use in controlling movement of a component (22) of a seagoing vessel comprises a cylinder (12) for coupling to a vessel hull (14) and an actuator shaft (18). A distal end (20) of the shaft (18) is coupled to the component whose movement is to be controlled and, in use, a control force (Fc) is applied to the shaft (18) to control movement of the shaft (18) from a first position, retracted, position to a second, extended, position. The actuator (10) is compliant in response to an opposing force exceeding a selected force to prevent or mitigate damage to the component (22) and/or the actuator 10 which may otherwise result from the opposing force.