液压反推作动系统运动性能的试验与数值模拟OA

As an important part of the thrust reverser system,the hydraulic thrust reverser actuation system is used to control the deployment and stowage of the thrust reverser device,and the thrust reverser force is generated during the plane to reduce the speed of aircraft.In order to investigate the movement characteristics of system,the experimental method is adopted to conduct experimental measurement research on the development of the hydraulic thrust reverser actuation system at different operating conditions,and the performance changes of different external forces and environmental temperatures.Based on the experimental boundary conditions,the hydraulic thrust reverser actuation system is carried out numerical simulation research,including simulation tool selection,model establishment,parameter settings,etc.The results of the study show that at the design conditions,the hydraulic thrust reverser actuation system can be deployed within 2 s and stowed within 3 s.At the end of the movement,the fierce impact effect of the operator can be weakened,and the speed is reduced to less than 150 mm/s.Different external forces seriously affect the synchronization exercise accuracy of deployment and stowage.The greater the external force,the worse the synchronous exercise accuracy.When the oil pressure and temperature are changed,the system movement performance deviates from the design point.And increasing pressure and temperature can effectively shorten the running time.In addition,except for different external forces(greater than 1500 N),the simulation and experiment have a good consistency,and this simulated model can be used as an effective tool for system operation evaluation.