Patent ID: 8540188

Claim:
An aircraft actuator hydraulic apparatus for supplying pressure oil to a hydraulically operated actuator for driving a control surface of an aircraft, the aircraft includes a body and at least a wing, the apparatus comprising: at least one aircraft central hydraulic power source; a backup hydraulic pump installed inside a wing at which the control surface of the aircraft is provided and to provide supply pressure oil to the actuator when a loss or degradation occurs in a function of the at least one aircraft central hydraulic power source that supplies pressure oil to the actuator; an electric motor installed inside the wing and configured to drive the backup hydraulic pump; a driver installed inside the wing and configured to drive the electric motor; and a cooling device installed inside at least one of the wing and the body of the aircraft and to simultaneously cool the backup hydraulic pump, the electric motor, and the driver, wherein the cooling device is a fan configured to rotate together with a rotating shaft of the electric motor, and wherein the electric motor, the backup hydraulic pump, and the driver are installed on a downstream side of cooling air generated by the fan, and the driver is installed further downstream with respect to the electric motor and the backup hydraulic pump.