The Simulation Study of Hydraulic Energy System of Launch Equipment on Unmanned Aerial Vehicle

Dynamic mathematical models of hydraulic energy system of launch equipment were established based on the theory of the Power Bond Graph methods.The dynamic characteristics of the hydraulic system were simulated numerically by using the Simulink soft ware.The characteristics of pressure and flow of the hydraulic system and the velocity and displacement of the hydraulic cylinder piston were presented.The different takeoff speed of UAV(Unmanned Aerial Vehicle)with different quality which working on differ- ent pressures in the same equipment was given.For the hydraulic cylinder piston realizes buffeting and slow-down(?)y compressing the hydraulic fluid,the turbulence after opening the unloading valve was analyzed through changing the volume elastic nedulus of the hy- draulic fluid.