EHA SYSTEM OF AIRCRAFT LANDING GEAR

摘要

PROBLEM TO BE SOLVED: To provide a ground travel system of an aircraft, which excels in economical efficiency and environmental.;SOLUTION: An EHA (Electro Hydrostatic Actuator) system 10 of an aircraft landing gear comprises: a hydraulic motor 41 that is connected to a wheel 15 installed to a strut of an aircraft and is configured to drive the wheel; a hydraulic cylinder 2 configured to store the strut in the airframe of the aircraft and extend the same therefrom; and an electrically-driven hydraulic pump (electric motors 311, 321, hydraulic pumps 312, 322) that is connected to the hydraulic cylinder and is configured to supply hydraulic pressure to the hydraulic cylinder during storing and extending of the strut. The electrically-driven hydraulic pump supplies hydraulic pressure to the hydraulic motor when the aircraft travels on the ground.;SELECTED DRAWING: Figure 2;COPYRIGHT: (C)2018,JPO&INPIT