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Boeing 777 Boeing 777 System Overview Eaton’S Aerospace Product Capabilities

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Boeing 777 Boeing 777 System Overview Eaton’S Aerospace Product Capabilities Aerospace Capabilities Boeing 777 Boeing 777 System Overview Eaton’s Aerospace Product Capabilities The Boeing 777 is a wide- The Boeing 777 is equipped supplies the Environmental Eaton’s Aeroquip® product line body, twin-engine airplane with three hydraulic systems. Control System (ECS) door includes the fluid quick discon- with flexibility in range, routes The left, center and right sys- actuator that will operate the ECS nect coupling and self-sealing and interior configurations. Its tems deliver hydraulic fluid at a door in flight to control airflow to "B" nut fittings that are used in state-of-the-art technology rated pressure of 3000 psig the ECS system. The 777 the Boeing 777 hydraulic sys- includes fly-by-wire flight (207 bar) to operate flight con- contains an Eaton rudder trim tem. They are also integrated in controls and digital avionics. trols, flap systems, actuators, switch to control the position of the hose assemblies reducing landing gear and brakes. the rudder trim actuator. weight and eliminating potential Similar in appearance to the leak paths on the aircraft. 767, the Boeing 777 is longer Primary hydraulic power for the The Boeing 777 equipped with and wider with wings that left and right systems is GE90 Snecma engines utilize Other Eaton products included include a folding wing-tip provided by two engine-driven the advance technology of on the 777 are main engine fuel option. The landing gear on pumps (EDP) and supplemented Eaton's Quantitative Debris pumps, pressure refueling level the 777 is the largest ever by two on-demand electric Monitoring (QDM) system. The control valves and special main incorporated into a motor-driven pumps (ACMP) QDM is an early warning for landing gear swivels that were commercial airplane to date. manufactured by Eaton. potential gear or bearing failure designed to meet the additional The standard two-post by capturing and indicating the side loads during deployment of arrangement features six- Two Eaton on-demand air tur- presence of ferrous debris parti- the landing gear. wheel trucks instead of bine-driven pumps (ADP) power cles in the lube oil. The unit is ® conventional four-wheel units. the center system. There are mounted in a Lubriclone that also two Eaton primary electric A total of 12 wheels support effectively separates air from motorpumps (ACMP) that pro- the oil before returning oil to the the 777 for better weight vides hydraulic power for the lube tank. distribution during landing engine thrust reversers, primary and while taxing to terminals. flight controls, landing gear and Eaton chip collectors are on the The cantilever low swept- flaps/slats in the center system. engines and manual level indica- wing design monoplane is of tors in many of the secondary advanced construction, with a Under emergency conditions power systems. cockpit based on the 747. hydraulic power is generated by The 777 is powered by the ram air turbine (RAT) which Each hydraulic system utilizes General Electric, Pratt & is deployed automatically and Eaton's integrated hydraulic fil- drives an Eaton variable dis- Whitney and Rolls Royce ter module, which performs the placement inline pump. The critical task of filtering pressure engines ranging from 74,000 RAT pump provides flow to the and case drain hydraulic fluid for lbs to 122,965 lbs of thrust. center system flight controls. use in the hydraulic system. The wide body twin-engine aircraft can carry between 305 Eaton supplies many critical Within the center system, and 440 passengers, seating electro-mechanical actuators for Eaton's brake metering valve ranges from six to ten abreast the 777. Eaton provides door (BMV) controls hydraulic pres- with two aisles and has a mechanisms that consist of sure to the aircraft brakes. range of 7,250 to 8,820 flight locks on the eight Eaton's main landing gear priori- nautical miles while traveling passenger doors, power drive ty valve (MLGPV) performs a at Mach 0.84. units to operate the two large critical function during peak cargo doors, rotary actuators to hydraulic power demands, such latch the two large cargo doors as landing. Also, playing a criti- and a power drive unit to cal role in aircraft safety, Eaton's operate the small cargo door. emergency passenger door The 777 also utilizes two thrust actuator (EPDA) assembly is reverse interlock linear actuators used to open a door when acti- and an auto speed brake control vated by nitrogen gas pressure. stand linear actuator. Eaton also 2 EATON Aerospace Group CF-21B April 2014 Eaton’s Boeing 777 Components 8 36 5 9 10 32 4 37 30 31 28 26 3 35 27 29 12 34 33 15 11 25 7 14 6 13 17 18 19 2 16 1 21 22 20 23 24 Motion Control Engine Solutions Hydraulic Systems 1. Flight Lock Actuator 13. Low Profile, Self-Sealing Fittings 25. Engine-Driven Pumps 2. Thrust Reverse Interlock Actuator 14. Kevlar® Hose Assembly 26. Air-Driven Pumps 3. Auto Speed Brake Control Stand Acutator 15. Low Profile Ratchet Lock Couplings 2 7. Inline Motor 4. Pneumatic Actuators 16. Low Profile Ball Bearing Plane Swivel Joints 28. Fluid Cooled AC Motorpumps 5. Cargo Door Rotary Actuator 1 7. Absolute/Gauge Pressure Switch 29. Rotary Actuator 6. Lift Latch Power Drive Unit 18. Pressure Altitude Switch 30. Brake Metering Valves 7. Power Drive Unit Assembly 19. Differential Pressure Switch 3 1. Main Landing Gear Priority Valve 8. Rudder Trim Switch 20. Sight Gauge 32. Filter Modules 9. Environmental Control System Door Actuator 2 1. Chip Collector 33. Solenoid Valves 10. Emergency Passenger Door Actuator 22. Quantitative Debris Monitor 34. Shut-Off Reservoirs 23. Lubriclone 35. Priority/Flow Limiting Valve 24. Prismlite Level Indicator 36 Stabilizer Trim Motor Fuel Systems 3 7. Ram Air Turbine Pump 11. Main Engine Fuel Pumps 12. Pressure Refueling Level Control Valve EATON Aerospace Group CF-21B April 2014 3 MF1-095-6 PV3-300-16 PV3-115-34 MPEV3-040-10 Stabilizer Trim Motor Main System Engine and Air Ram Air Turbine Pump AC Motorpump Eaton’s Stabilizer Trim Motor is a Motor Driven Pump Eaton's 3025 psi (208 bar) inline Auxiliary power is provided by a 3000 psi (207 bar), 2320 rpm Hydraulic power for the left and piston pump provides 20 gpm 3110 psi (214 bar), 12 gpm bent axis fixed stroke piston right systems is supplied by two (76 L/min) at 3920 rpm hydraulic (45 L/min), 8000 rpm, fluid motor. Displacement is 0.803 cu 48 gpm (182 L/min), 4315 rpm, power for the priority flight con- cooled motorpump. Features in/rev (12.15 ml/rev). Dry motor variable displacement, 3000 psi trol surfaces in the event power include ceramic electrical feed weight is 9.75 lbs (4.42kg) (207 bar), pressure compensated is lost in both engines or a total through design and a non-metallic inline pumps. Displacement is 3.0 electric power failure occurs. diffuser. Eaton's integrated cu.in./rev. (49.14 ml/rev). Dry pump Displacement is 1.25 cu in/rev motorpump completed the weight is 40.10 lbs (18.18 kg). (20.47 ml/rev). Dry pump longest qualification test on a weight is 15 lbs (6.8 kg). single product in the history of Eaton's Vickers® product line. 1800 & 1801 Series AS1896 Low Profile Ball Bearing Plane AS1975 & AS4623 Kevlar® Low Profile Ratchet Lock Low Profile, Self-Sealing Swivel Joints Hose Assemblies Couplings Hydraulic "B" Nut Fittings To meet the demanding side load Eaton’s Kevlar hose assemblies Eaton’s Aeroquip product line of Eaton combined a small enve- requirements on the Boeing 777 optimize weight throughout the self-sealing ratchet lock couplings lope size with minimal weight to landing gear, Eaton has improved hydraulic system. offer dependable service in develop the low profile, self-seal- the performance of the 1817 aircraft for both low and high ing hydraulic "B" nut fittings. The Series low profile ball bearing pressure applications. These "B" nut design is for both high plane swivel joints to take up to couplings are available in both and low pressure hydraulic sys- three times the MIL-J-5514 side aluminum and stainless steel. tems on the Boeing 777. load requirements. The resulting swivel design has superior reli- ability and ultra low swivel torque. 4 EATON Aerospace Group CF-21B April 2014 71425 71404 71444 71476 Filter Module Brake Metering Valve Main Landing Gear Priority Emergency Passenger Door The Boeing 777 integrates Eaton’s brake metering valve Valve Actuator Eaton's hydraulic filter module controls hydraulic pressure to Installed within the main landing Playing a critical role in aircraft within each of the three main the aircraft brakes. Using spool gear hydraulic system, this valve safety, the emergency passenger hydraulic systems. The module fil- and sleeve technology, the brake performs a critical function door actuator assembly extends ters the pressure and case drain valve has two separate normally- during periods of peak hydraulic to open a door when actuated by hydraulic fluid for use in the closed metering valves, a de- power demands. The lap assembly nitrogen gas pressure. Eaton's hydraulic system. System pres- spin actuator, and a common piston, spool and sleeve valve is a actuator extends 4.44 inches sure is monitored and controlled input shaft for both metering pressure sensitive flow limiter (113mm) (minimum) to open the through a series of integrated valves. The metering valve for with a solenoid over-ride feature. door when gas is applied at the valves, sensors, pressure trans- the left hydraulic system is With the solenoid de-energized, inlet fitting. Maximum inlet ducers, check valves, and relief opened by rotation of the input the valve senses control pressure is 4125 psig (284 bar).
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