Simulation of an electro-hydraulic circuit for ALARS

In this paper, the authors present hydraulic and electro-hydraulic simulations of circuits needed for ALARS (Automated Launch Recovery System). fact, is used to launch side-scan sonar into sea. First circuit has following devices: tank, filter, fixed displacement pump, check valve, 4/3- way valve with two buttons, throttle pressure relief hand lever tanks reservoir, filter double acting cylinder (Cy 1-1). Afterwards, second pump unit, 4/2-way cylinders 2-1 Cy 2-2). Forward, first lamp, solenoid, 3-1), solenoid tanks. Ultimately, 4-1 4-2), relay, lamp.