Hydraulic System DREAMLINER Architecture(cont No bleed air used for hydraulic power ■ Bootstrap Reservoir Chosen because bleed air not available for reservoir pressurization Change from traditional air-over-oil configuration Bootstrap system utilizes hydraulic system pressure to pressurize reservoIr Proven design on Douglas model airplanes DC-10,MD-11 717.DC-8,DC-9.MD-80.MD-90 Boeing ProprietBoeing Proprietary Hydraulic System Architecture (cont.) ◼ No bleed air used for hydraulic power ◼ Bootstrap Reservoir ◼Chosen because bleed air not available for reservoir pressurization ◼Change from traditional air-over-oil configuration ◼Bootstrap system utilizes hydraulic system pressure to pressurize reservoir ◼Proven design on Douglas model airplanes • DC-10, MD-11 • 717, DC-8, DC-9, MD-80, MD-90