Hydraulic Component for High Pressure Hydraulic Systems

Design considerations that 8000 psi and non-flammable fluids have upon aircraft hydraulic pumps and motors are presented. The influence of one non-flammable fluid, chlorotrifluoroethylene (CTFE) is discussed.

The employment of variable displacement pressure scheduled pumps and variable displacement motors is shown to provide significant savings in power and heat generation.

The paper includes a summary of the high pressure and non-flammable fluid operating experience on both pumps and motors. A review of a unified method in presenting test data at high pressure is presented.

The paper concludes with an update summaries of the Wright Patterson Air Force Base contract for three 40 gpm, 8000 psi CTFE pumps as well as the test time for Model PV3-047 pump operating at 8000 psi on the Navy Lightweight Hydraulic System (LHS) test.