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Aircraft hydraulic systems are used to actuate flight control surfaces, thrust vectoring and reversing mechanisms, landing gear, cargo doors, and in some cases, weapon systems. The dynamic behavior of aircrafts in the air is largely influenced by the landing gear system for maneuverability to attain stability. The study of the hydraulic actuation system requires the identification of operating characteristics of each component.
This paper proposes an approach to model the hydraulic actuation system with MATLAB-Simulink by adopting component oriented modeling. The interconnection of these components will enable us to simulate, analyze and optimize the aircraft landing gear hydraulic actuation system. This method can greatly reduce the effort required for all kinds of hydraulic simulation test framework development and achieve higher productivity, better reusability, extend ability and maintainability. Interconnection between the subsystems is an issue, as it is surprisingly not a straightforward task in MATLAB/Simulink, despite the fact that each toolbox works well if used in standalone mode. The model is verified with the physical model of hydraulic actuator, actuated by micro electro-hydraulic components.

Keywords

Landing Gear, Hydraulic Actuation System, Modeling, Simulation, Mechatronics

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