Software Simulation for Hydraulic Transients 881364

During the last two decades, high performance hydraulic systems have been developed, involving ever increasing pressures. The standard pressure in missile and aircraft systems was 3000 p.s.i. during the 1950's. Then pressures were increased to 4500 p.s.i., and now to 8000 p.s.i. These higher pressure systems are being adopted in an attempt to handle higher power and to minimize component weights. Because of this increase in pressure and power, severe dynamic problems have resulted, such as extreme pressure transients, or “water hammer”. This paper describes a time domain digital simulation computer program called RoHDA, which can be used to simulate the dynamic conditions of a system of any complexity. RoHDA is the acronym for Rockwell Hydraulic dynamic Analysis.