Actuator module

A linear electro-hydrostatic actuator system comprising:

• an electro-hydraulic linear actuator module comprising:
• a stator having a cylindrical bore therethrough;
• a linear electric machine translator movable axially within the cylindrical bore;
• a positive displacement chamber adjacent each end of the translator for holding, in use, an incompressible fluid;
• first and second fluid pathways, one leading into each chamber, for the flow of the incompressible fluid into and/or out of the respective chamber,
• wherein movement of the translator along the cylindrical bore alters volumes of the chambers;
• and
• a hydraulically operated linear mover module comprising:
• a hydraulically operated linear mover;
• and
• a positive displacement chamber adjacent each end of the hydraulically operated linear mover for holding, in use, an incompressible fluid,
• wherein at least one chamber of the hydraulically operated linear mover module is fluidly connected to one of the first or second fluid pathways so that, in use, movement of one of the linear electric machine translator or the hydraulically operated linear mover causes movement of the other;
• a pair of concentric tubes co-axial with the stator and the translator, one tube associated with each chamber, wherein each fluid pathway passes within a respective tube.