![]() The steering test and the antishimmy test are conducted to verify the functions of the system. Using the swing actuator to provide the load torque and ground excitation, the steering test bench is prepared to test the system working. Then the prototypes of the steering mechanism and electrohydraulic servo system are researched to validate the design. A nose wheel steering electrohydraulic servo system with handling and antishimmy functions is designed for the steering mechanism. Considering the multiple objective functions of nose wheel steering mechanisms, those core design parameters are multiobjective optimized. ![]() A following swivel selector valve is firstly designed to meet the demand for the hydraulic pressure commutating as soon as the dual actuator nose wheel steering mechanism passes through its dead center position. ![]() In order to improve aircraft ground handling characteristics and airport working efficiency, large handling angle and torque are requested for the nose wheel steering system of large civil aircraft. ![]()
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March 2023
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