Lockheed Martin/Boeing F/A-22 Raptor Lockheed Martin/Boeing F/A-22 Raptor Component & Systems Overview Eaton’s Aerospace Group Product Capabilities

The Lockheed Martin F/A-22 The F/A-22 Raptor replaced the With the auxiliary power unit, controlled by the flow limiter/ Raptor is a swept-winged venerable F-15 Eagle as America's emergency power is provided directional control valve, which is a fighter with blended engine premier front-line fighter jet, by a 27 gpm (102 L/min.), 6,000 4-way variable position, slide, and intake/wing leading edge starting in 2005. It is the air- rpm, variable displacement, sleeve type metering valve that root extension. The aircraft dominance fighter of the 21st 4000 psi (27,600 kPa), pressure- is spring centered to its normally- is powered by two Pratt century. "The Raptor is a flexible, compensated inline piston pump closed position where the control & Whitney F119-PW-100 adaptable, versatile combat with an electrical depressurization ports are overlapped. afterburning turbofans, each aircraft capable of seeing all, valve (EDV). Design features Eaton is also providing the electro- fitted with a two-dimensional knowing all, and shaping all that include a one-piece housing and mechanical seat actuator for thrust-vectoring nozzle. occurs on or above the battlefield," solenoid valve with pigtail for the aircraft's Advanced Concept says Chief Test Pilot Bret Luedke, vibration isolation from the pump. The advanced tactical Ejection System (ACES II). one of the pilots responsible for fighter's engines produce flight-testing the F/A-22. "And do Eaton's components provide more thrust than any current fluid control and actuation for As well, Eaton also supplies all that while flying supersonic and ® ® fighter engine, especially in the rudder control, landing gear, Aeroquip Kevlar hoses, all but invisible to radar," he added. ® the military power regime, electronic warfare emergency Rynglok tube fittings, high allowing the F/A-22 to cruise Eaton, a recognized leader in power generator, and nose wheel performance fuel tubes, mini- efficiently in excess of Mach the design and manufacture of steering systems. The rudder modular cooling couplings, cockpit 1.5 without the use of fuel- hydraulics, fuel, conveyance and shuttle valve is designed for air couplings, rotomold ducting, guzzling afterburners. This actuation products, was chosen use at up to 4100 psi (28,300 landing gear swivels and E-Seals. capability greatly expands the to provide key products for the kPa) operating pressure, and Aircraft systems monitoring F/A-22's operating envelope F/A-22. The 4100 psi (28,300 kPa) automatically shuttles hydraulic components such as Eaton's in both speed and range over hydraulic system on the F/A-22 power to the aircraft's rudder Tedeco® oil level sensors, debris current fighters. incorporates Eaton's main engine- system from one of two screen chip collectors, and a driven pumps, auxiliary power independent hydraulic systems by ® It’s key feature is an advanced Lubriclone air/oil separator pump, air recharge compressor utilizing the differential pressure avionics architecture using the system can be found on this motor, gun drive motor, fuel transfer between the two independent most advanced fiber-optic and versatile aircraft as well. The oil motor, and main and side weapons system pressures to initiate the digital electronic flight and level sensor can detect three bay door motors. shuttle. Eaton also provides the levels of oil: full, add, and low. weapon and control system in hydraulic motor/control valve development. All weapons are The F/A-22 employs a hydraulic Magnetic reed switches have packages for the weapons bay a redundant circuit for high carried internally. gun drive, which is comprised doors. These consist of a one- of two discrete component reliability. A reservoir pickup The F/A-22 is intended piece aluminum manifold within subassemblies integrated into tube is installed in the Airframe for an air superiority role, which the hydraulic motor and one assembly. This provides Mounted Accessory Drive (AMAD) providing much greater range, various control valve components mechanical rotary power to to assure proper oil flow with payload, time on station, are mounted and interconnected. the gun when commanded by minimum air intrusion when and agility than the F-15 electric signal or manual input. The heart of the package is an the aircraft becomes inverted. and F-16 fighters of today. The fuel transfer motor, a variable Eaton fixed displacement and Its magnetic chip collector is A combination of improved displacement 4000 psi (27,600 variable displacement hydraulic located in the lubricating fluid sensor capabilities, improved kPa) inline hydraulic motor, is used motor, which is configured as flow of the AMAD and traps situational awareness and in combination with a centrifugal a cartridge. The manifolds also ferrous wear debris of magnetic improved weapons provides fuel pumping element to provide provide the hydraulic interface attraction, preventing the particles first-kill opportunity. The F/A- a fuel pressure compensated between the side weapons bay from causing damage to key 22 features a sophisticated fuel boost pump. The 5.9 gpm door/main weapons bay door components. The analysis of sensor suite that allows the (22.33 L/min.) hydraulic motor/ (SWBD/MWBD) and aircraft these particles may provide an pilot to track, identify, and fuel pump is used on the F/A-22 hydraulic supply systems. early warning of abnormal wear or shoot opposing aircraft at to boost fuel from the main fuel Hydraulic-mechanical power breakdown of components within beyond-visual-ranges while tanks to the main fuel pumps at conversions for the side weapons the AMAD, thus increasing its life. having the ultimate in close- essentially constant fuel pressure. bay door and the main weapons in dog-fight capabilities. No This is the first time that a bay door are provided by the fixed other aircraft has had this variable displacement motor has displacement hydraulic motor and combination of characteristics. been used to provide pressure variable displacement hydraulic compensation for a centrifugal motor. Speed and direction for fuel pump. both the SWBD and MWBD are

2 EATON Aerospace Group C5-24D April 2014 Lockheed Martin/Boeing F/A-22 Raptor Component & Systems Overview

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Engine Solutions Motion Control Hydraulic Systems Fuel & Interting 1. Magnetic Chip Collector 5. Main Weapons Bay Door 12. Main Engine-Driven Pump 22. Fuel Transfer Motor 2. Lubriclone Motor/Package 13. Rynglok Tube Fittings 23. Main Engine 3. Mini-Modular Coolant 6. Side Weapons Bay Door 14. Reservoir Pick Up Tube Fuel Line Assemblies Couplings Motor/Package 15. Kevlar Hose Assemblies 4. Oil Level Sensor 7. Gun Drive Motor 16. Stainless Steel Reinforced 8. Landing Gear Sequence Valve Hose Assemblies  9. Landing Gear Control 17. Auxiliary Power Unit Pump 10. Landing Gear Brake Swivels 18. Utility Isolation Valve 11. Rudder Shuttle Valve 19. Electronic Warfare Control Valve 20. Pressure Switches 21. Pressure Transducer

EATON Aerospace Group C5-24D April 2014 3 Kevlar® Reinforced Stainless Steel Reinforced ECS Air Valves Mini Modular Hose Assemblies Hose Assemblies Coolant Couplings Cockpit video display units are Eaton's Aeroquip product line Stainless steel reinforced hose kept cool using Aeroquip ECS Air Eaton's miniature modular self- Kevlar® hose assemblies are assemblies for the F/A-22 include Valves. The valves are made from sealing coolant couplings are utilized extensively throughout the 666 smooth bore, medium lightweight injection-molded nylon used extensively in the F/A-22 the F/A-22 aircraft to optimize pressure hose assemblies and material and aluminum castings. to help keep the aircraft's state weight reduction throughout the the AE641 convoluted hose Internal valving automatically of the art electronic systems hydraulic system. The AE319 and assemblies which are used in closes upon removal of the cool. These couplings were AE355 hose assemblies are rated the low pressure return side of video display units and creates developed in response to today's to 4000 psi (27,600 kPa) and are the hydraulic system and in the an equivalent pressure drop need for liquid flow through used in the low pressure hydraulic fuel system. across the valve that simulates avionics packaging technologies. return system. The AE319 is a Eaton's Aeroquip wire reinforced the pressure drop as if the video The design of these couplings heavy duty hose and is used medium pressure hose assemblies display unit were still installed. provide unequaled performance in areas that experience more are rated for pressures up to 1500 in pressure drop and superior severe service. psi (10,343 kPa) and feature a wire reliability in sealing out dust, particulates and foreign matter, reinforced, Teflon® hose with light weight, low profile crimp fittings. while preventing fluid leakage during connection/ disconnection Convoluted hose assemblies of system components. provide increased flexibility and are excellent for use in areas that require a tight bend.

Rynglok® Tube Fittings Landing Gear Brake Swivels 2055 Series Coolant Couplings Rotomold Ducting The fittings for the F/A-22 are the These 4,000 psig (27,600 kPa) Eaton's 2055 series push-pull Eaton's center console and 4000 psi (27,600 kPa) titanium operating pressure swivels are coolant couplings are used canopy defog ducts provide and the low pressure aluminum used on the F/A-22 landing gear exclusively throughout the F/A-22 environmentally controlled air Rynglok® fittings. The titanium, system to help deliver fluid to PAO coolant system. The 2055 to the cockpit. These ducts are axial swage fittings provide the the aircraft's braking system. Series were specifically designed made of seamless lightweight link to join fluid delivery tubing, Manufactured from high strength for light weight, low profile rotationally-molded nylon material. while minimizing system weight. 7075 aluminum material to help demanding applications like that There is one each of these ducts Fittings include permanent and arc keep weight to a minimum, these needed on the F/A-22. per aircraft. seal connections in straight elbow swivels are capable of a full 360 and tee configurations. degrees of rotation.

4 EATON Aerospace Group C5-24D April 2014 E-Seals Main Engine Electronic Warfare Side Weapons Bay Door Fuel Line Assemblies Control Valve (SWBD) Motor/Control The lower exit duct seal is a Valve Package metallic E-Seal that is installed Fuel is supplied to each of the The solenoid controlled pilot- between the primary heat engines in the F/A-22 via two operated spool valve provides This motor/control valve package exchanger and the exit duct of the main engine fuel line assemblies. two independent spools for is used to control and limit the F/A-22 aircraft. Each assembly is three inches controlling hydraulic pressure and flow of hydraulic fluid to the in diameter, and approximately return fluid flow for extension 4000 psi (27,600 kPa) fixed two to three feet long. The fuel and retraction of two hydraulic displacement hydraulic motor lines are made from aluminum actuators. There are two of these (FDHM), which in turn will be material and each contains three valves per aircraft. used to drive the geared rotary articulating ball joints. Each ball actuator to position the side joint is capable of 20 degrees of weapons bay door of the aircraft. angular movement.

Main Weapons Bay Door Landing Gear Sequence Valve Rudder Shuttle Valve Utility Isolation Valve (MWBD) Motor/Control The landing gear sequence The rudder shuttle valve is The utility isolation valve provides Valve Package valve is used to control hydraulic designed for use up to 4100 psi emergency tow brake operation This motor/control valve package pressure and fluid flow for (28,300 kPa) operating pressures. for the F/A-22 aircraft. During is used to control and limit the sequencing the main landing gear It automatically shuttles hydraulic emergency stop conditions, the flow of hydraulic fluid to the with the main landing gear door. power to the aircraft's rudder solenoid-operated, two-position, 4000 psi (27,600 kPa) variable A pneumatically actuated override system from one of two three-way valve is commanded displacement hydraulic motor feature is provided for emergency independent hydraulic systems open to provide hydraulic system (VDHM), which in turn is used to operation, which interconnects by utilizing the differential 2-reservoir accumulator pressure drive the geared rotary actuator both the "DOWN" and "LG EXT" pressure between the two to the aircraft’s brake circuit. to position the main weapons bay ports. Since there is no direct independent system pressures door of the aircraft. pressure source, the operating to initiate the shuttle. The valve is pressure comes from either electrically operated through a 28 the "DOWN" or "UP" hydraulic solenoid valve for primary system command lines via a logic circuit isolation and has a return system which consists of four miniaturized check valve and flow limiter for check valves. downstream functions.

EATON Aerospace Group C5-24D April 2014 5 Landing Gear Door Solenoid Operated Oil Level Sensor Magnetic Chip Collector Sequence Valve Switching Valve Eaton's oil level sensor senses The 1D7092 and 1D7093 The landing gear door sequence The hydraulic switching valve three levels of oil - full, add, and magnetic chip collector is located valve is a mechanically-operated, control module, is a 6-way low. Magnetic reed switches in the lubricating fluid flow of the two-position, four-way hydraulic 2-position, solenoid-operated, have a redundant circuit for high Airframe Mounted Accessory sequence valve that controls non-interflow type, selector reliability. Drive (AMAD) and traps ferrous hydraulic supply and return fluid valve, with position indicator. The wear debris by magnetic flow for sequencing the main function of the switching valve is attraction. This prevents the landing gear door with the main to direct pressure and return fluid particles from causing damage landing gear. flow from a secondary hydraulic to the drive components. The system of the aircraft (System 1), analysis of these particles may during maintenance of the aircraft, provide an early warning of to power utility functions normally abnormal wear or breakdown of dedicated to the primary system components within the AMAD, (System 2) for these functions. this increasing its life.

Reservoir Pickup Tube Pressure Switch Pressure Transducer Installed in the Airframe Mounted Eaton's pressure switches Eaton's pressure transducer Assembly Drive (AMAD) to assure are used for main engine and monitors hydraulic system proper oil flow with minimum Auxiliary Power Unit (APU) pump pressure in the aircraft. air intrusion when the aircraft pressure indication/monitoring. becomes inverted.

6 EATON Aerospace Group C5-24D April 2014 Lubriclone® Main Engine Driven Pump Side Weapons Bay Door Motor Auxiliary Power Unit Pump Separates entrained air from Hydraulic power for the F/A-22 is Hydraulic mechanical power Emergency power is provided the scavenged lube system oil provided for all flight control and conversion for the side weapons by a 27 gpm (102 L/min.), 6,000 by centrifugal force. Unique utility functions by four 72 gpm bay doors is provided by two rpm, variable displacement, internal design affords separation (273 L/min.) 4411 rpm, variable 4000 psi (27,600 kPa), 11,200 4000 psi (27,600 kPa), pressure- efficiencies up to 99%. Wear displacement, 4100 psi (28,300 rpm fixed displacement motors. compensated inline piston pump particles are also directed to an area kPa), pressure-compensated Displacement is .36 cu. in/rev. with electrical depressurization where a debris monitor can readily eleven-piston pumps. Each pump (5.89 ml/rev.). Dry weight is valve (EDV). Design features capture and indicate their presence. is equipped with an Electrical 3.11 lbs (1.41 kg). The motor is include a one-piece housing Depressurization Valve (EDV) integrated with the Motor/Control and solenoid valve with pigtail and features a one-piece housing, Valve Package. for vibration isolation from 11 piston-rotating group, and pump. Displacement is solenoid valve. Displacement is 1.12 cu. in/rev. (18.35 ml/rev.). 4.1 cu. in/rev. (67.15 ml/rev.). Dry Dry weight is 14.1 lbs. weight is 34 lbs (15.42 kg).

Gun Drive Motor Fuel Transfer Motor High Pressure Actuator Pump The hydraulic gun drive employs This variable displacement 4000 Eaton's Model 841200 high a 4000 psi (27,600 kPa), 7250 psi (27,600 kPa) inline hydraulic pressure actuator pump provides rpm, fixed displacement inline motor is used in combination the "fueldraulics" on the Pratt & hydraulic motor and control valve with a centrifugal fuel pumping Whitney F119 engine, which is which is integrally mounted to element to provide a fuel pressure the most advanced engine in automatically control hydraulic compensated fuel boost pump production and is used on the U.S. motor speed, acceleration and package. The 5.8 gpm (21.96 Air Force's F-22 Raptor. deceleration. Valves are also L/min.) hydraulic motor/fuel included to allow control of pump is used on the F/A-22 to the gun port and purge door boost fuel from the main fuel actuators. Displacement is tanks to the main fuel pumps at 0.642 cu. in/rev. (10.5 ml/rev.). essentially constant fuel pressure. Dry weight is 16.25 lbs (7.37 kg). This is the first time that a variable displacement motor has been used to provide pressure compensation of a centrifugal fuel pump. Displacement is 0.13 cu. in/rev. (2.13 ml/rev.). Dry weight is 9 lbs (4.08 kg).

EATON Aerospace Group C5-24D April 2014 7 Eaton Aerospace Group 9650 Jeronimo Road Irvine, CA 92618 Copyright © 2014 Eaton tel: (949) 452-9500 All Rights Reserved fax: (949) 452-9555 Form No. C5-24D www.eaton.com/aerospace April 2014