Hydraulic Pump-Loop Circuit Evaluation of Naval Air Development Center Developed Silicone Base Nonflammable Hydraulic Fluid (NADRAUL MS-5)

摘要

A candidate silicone base nonflammable hydraulic fluid designated NADRAUL MS-5 was evaluated for performance in a hydraulic pump-loop circuit test stand. A Vickers offset model pump was operated at 225F and 3000 psi system pressure in conjunction with Buna N elastomer seals. A total of 500 hours of performance was achieved before the test was arbitrarily stopped in order to determine the condition of pump components. Based on the operating conditions monitored during the test and a pretest and post-test examination of the pump, it was determined that NADRAUL MS-5 silicone base fluid possesses improved antiwear properties in comparison to other silicone fluids. No abnormal wear or deterioration of the pump was observed. In addition, no operating difficulties were experienced throughout the 500 hour test. (Author)