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Trends of Future Aircraft Hydraulic System

Wang Zhanlin et al.  
High density of driving power, rapidly response,high rigidity and high-precision are the advantages of hydraulic servo system, so it is widely used in aerospace. All of flight actuator and transmitting systems of today's aircrafts are nearly driven by hydraulic systems. With the development of aircraft, especially of military aircraft, more demands are proposed to aircraft hydraulic system. In this paper, main developmental trend of airborne hydraulic system, especially of military aircraft, is summarized, and some research works on aircraft hydraulic systems in domestic and overseas are introduced. Point out: light weight, small size, high-pressure, large power variable pressure, intellectualize, integration, redundancy technique, and so on are the main trends of development of future aircraft hydraulic system. Especially,high-pressure,variable pressure hydraulic intelligent pump source system is very important for the development of future aircraft.
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