Fabrication and Testing of Lightweight Hydraulic System Simulator Hardware. Phase 2. Addendum

Abstract : Follow-on work was conducted in a development program to design, fabricate, and test a full scale 8000 psi Lightweight Hydraulic System simulator. The principal task was the performance of an additional 600 hours of mission/profile cycling (1200 hours total). Three flight control actuators completed approximately 5 million cycles under simulated aircraft loading. All minor hydraulic components performed satisfactorily. The results demonstrated that 8000 psi hydraulic systems pose no technological problems for aircraft applications. Other tasks completed were ground support equipment re-work, piston seal evaluation test, coil tube design guidelines, black residue investigation, hybrid pump development, and tube fitting re-design. Keywords: Aircraft hydraulic systems, Aircraft equipment, Lightweight hydraulic systems.