Simulation of characteristics of staged combustion cycle rocket engine and control valve based on AMESim/Simulink
The model of a control valve of a staged combustion liquid rocket engine was rebuilt in AMESim software environment.And the model of electromechanical actuation system was built in Simulink.Co-Simulation on process of variable thrust,including control valve,actuation system and modified engine model,was conducted.Then perturbance of pressure was introduced during simulation.The results showed that the model of electromechanical actuation system and control valve can reflect the internal parameter changes of each component in the process of variable thrust.The co-simulation maintained the steady-state accuracy of the original engine model,the errors of the main parameters were within the order of 1％o.The self-feedback structure of piston of control valve can restrain the influence of low frequency pressure fluctuation in the conveying pipeline on the thrust of the engine.
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