Bell/Boeing V-22 Osprey
Bell/Boeing V-22 Osprey
Bell/Boeing V-22 Osprey OverviewEaton’s Aerospace Group's Product CapabilitiesThe Bell/Boeing V-22 Ospreyis the first productionaircraft in the world utilizingtilt-rotor technology. Thetilt-rotor allows the V-22 totakeoff and land vertically,much like a helicopter, andonce airborne, transition intohorizontal high-speed, highaltitude flight by tilting thewing-tip mounted enginenacelles forward 90 degreesso that the rotors function asconventional propellers.The V-22 is the firstrotocraft designed to meetthe requirements of fouragencies: the Marine Corps,the Air Force, the Navy,and the Special OperationsCommand. This highlysurvivable, low-maintenancecombat assault aircraft willprovide military serviceswith an entirely new combatcapability never beforeattainable. Variants of thebasic design include: 1) U.S.Marine Corps MV-22B forairborne amphibious assault,2) U.S. Navy HV-22 for searchand rescue, 3) U.S. Air ForceCV-22 for long-range specialoperations.Other variants include aU.S. Navy anti-submarinewarfare platform, a civiliancommercial passengertilt-rotor aircraft, and anAEW radar platform. TheV-22 can carry 24 combattroops or up to 20,000 lbs.of cargo internally, or 1000lbs externally, at speeds upto 275 kt. (316 mph) (twicethe speed of a helicopter).The aircraft is powered bytwo Allison turbo-shaftengines with cross-coupledtransmissions to providepower to both rotors, shouldone engine fail. The graphiteand fiberglass rotors fold,and the wing rotates tofacilitate shipboard aircraftstorage. Other featuresinclude a 41% compositematerial airframe, 5000psi (34,500 kPa) hydraulicsystem, fly-by-wire flightcontrol systems, and digitalavionics.2EATONEaton is a recognized leaderin the aerospace industry andis a key supplier of hydraulics,fuel, conveyance and actuationproducts and is a key supplier onthe V-22 for engine-driven pumps,inlet particle separators, primaryand back-up hydraulic power drivemotors (HPDU), rotor positioningactuation motors and the cargodoor DC motor-pump.Hydraulic power for flight controland utility functions is providedby three 5000 psi (34,500 kPa)variable displacement, pressurecompensated, inline pistonpumps. Each unit is capableof producing 38 gpm (143 L/min.) flow at 6,000 rpm in thehelicopter mode, and 33 gpm(124 L/min) flow at 5,075 rpmin the airplane mode. Each shipset includes four Inlet ParticleSeparator (IPS) blowers withtwo mounted in each enginenacelle. The units are capableof producing airflow of 2,360cu ft/min at 92ºF (133ºC) and airdensity of 0.063 lbs/cu ft. Unitweight is 10.0 lbs (4.54 kg).Rotary power and motion issupplied to the pylon conversionactuator HPDU and back-upHPDU by a 5000 psi (34,500kPa) fixed displacement, bentaxis hydraulic motor. This unitproduces 4,500 in-lb torque at arated speed of 6,700 rpm with amaximum intermittent speed of12,000 rpm. Auxiliary hydraulicpower is provided by a 3000 psi(20,700 kPa), fixed displacement,24 VDC electric motor-drivenpump. The unit converts aircraftelectrical power into rotary shaftmotion to drive a cantilever shaftmounted vane pump.Eaton also supplies modules tocontrol fluid flow for the winchand hoist operation, the hydraulicbrake master cylinder, and aparking pilot/co-pilot brakingtransfer module. The hydraulicfluid pressure reducer, a pressurereducer and relief valve assembly,lowers the 5000 psi (34,500 kPa)system pressure to 1860 psi(12,800 kPa) for the brake system.Eaton also provides wing stowsystem isolation valves and utilitysystem isolation valves.The winch and hoist moduleregulates the hydraulic flow to thewinch and hoist hydraulic motorsAerospace Group C5-11F April 2014to control speed in responseto an electrical input. Speedis independent of motor load.Flow is regulated on both theup and down side of the motor,thereby minimizing differentialpressure while maintainingcontrol of the motor speed. Thehydraulic brake master cylinderfunctions as a boosted brakevalve assembly when the aircrafthydraulic system is pressurized.The unit directs flow and pressureto the wheel brake cylinders.The brake pressure delivered isa function of pilot input force,which is proportional to the brakedisplacement. When there is nosystem pressure, the unit revertsto manual braking, utilizing a twostage piston arrangement.Eaton's park/lock valve providesisolation of fluid between the pilotand co-pilot's master cylindersand the brakes. It also has alever and poppets so that whenactuated, hydraulic pressure islocked in the brakes for parking.The unit contains maintenancefree accumulators to providefluid for thermal compensationwhen the unit is in the "park"mode. Pressure switches areincorporated in both the right andleft brake pressure indicators.Eaton provides a wide range ofadditional components includinginlet particle screens, sightgages, chip detectors, opticalsensors, Prismalites andLubriclones . Other significantparts include drain valves, checkvalves, float switches, drainplugs, full flow chip detectors anddesiccant breathers.Optical sensors are high-reliability,solid state switches that detectoil levels in the mid-wing, tilt-axis,and prop-rotor gearboxes. Theseunits have no moving parts, arefully explosion-proof, and areprotected from transients onthe power supply line. Prismalitesight gauges make oil reservoirlevels readable from above orbelow. A solid, dark viewing areaappears when fluid covers theprism.Eaton's Lubriclone packagesare designed to monitor thecritical bearings and gears in theV-22's mid-wing gearbox, proprotor gearbox, tilt-axis gearbox,and engines. High efficiencydebris separation and concentration of all particles over 200micrometers (and most particlesbetween 100 and 200 micrometers) extend filter elementlife and enhance early failuredetection capability. As an addedfeature, the vortex separatoralso removes the air from theoil, with an efficiency of 95%.The desiccant breathers removemoisture from air drawn downinto the gearbox or transmissionto prevent the corrosion of critical gears and bearings.Eaton also supplies a rampcontrol valve, rotor brake valve,remote switching valves, andlocal switching isolation valves.The ramp control valve providesthe means to independentlyoperate either the ramp orthe door, with either electricalcommands from the cockpitor manual controls located onthe valve. The rotor brake valveprovides a means of preventingprop-rotor movement when theaircraft engines are shut down.The switching valves are locatedin the engine nacelles andprovide primary hydraulic systempressure to utility hydraulicsystem transfer, isolation, andground check-out functions.
Bell/Boeing V-22 Osprey Eaton Components211013893022281519518 20161727 2627412296241113232514Engine SolutionsHydraulics SystemMotion Control1.Chip Collectors10.Engine-Driven Pump23.Ball Bearing Swivels2.Chip Detector11.DC Motorpump24.Ramp Control Valve3.Dessicant Breather12.Hydraulic Fluid Pressure Reducer25.Ramp Door Latch Valve4.Inlet Particle Separator Blower13.Hydraulic Brake Master Cylinder26.Wing Rotation Actuator Motor5.Prismalite14.Park, Lock Transfer Module27.Wing Stow System Isolation Valve6.Lubriclones15.Rotor Positioning MotorOptical SensorsPrimary & BackupHydraulic Power Drive Unit28.7.Check Valve29.Winch & Hoist Module30.Active Safety Latch V-Band Coupling8.Sight Gauge16.9.Differential Pressure Gauges17.Rynglok Fittings18.Utility System Isolation Valve19.Local Switching Isolation Valve20.Hose Assemblies21.Remote Switching Valve22.Wing Nacelle SwivelsEATONAerospace Group C5-11F April 20143
Rotor Brake ValveThe rotor brake valve has twosolenoid-operated, 2-stage, 3-way,2-position, normally closed valves,an orifice, a check valve and arelief valve. By energizing theproper solenoid with 28 VDC,hydraulic force is applied to orreleased from the aircraft rotorbrake. The brake is applied whenthe aircraft engines are shut downand prevents the inadvertentrotation of the prop-rotors andtheir drive train components.Active Safety Latch V-BandCouplingThe special active safety latchV-band coupling is used tosecure the wing fold locking-pinassembly. The V-22 application,required a coupling that couldbe installed with one hand andwithout line of sight access duringassembly. The wing fold lockingpin assembly is used to securethe rotor blades during stowageof the aircraftWinch and Hoist ModuleHydraulic Brake Master CylinderThis module regulates the hydraulicflow to the winch and hoisthydraulic motors to control speedin response to an electrical input.Speed is independent of motorload. Flow is regulated on both theup and down side of the motorthereby minimizing differentialpressure while maintaining controlof motor speed.The hydraulic brake master cylinderfunctions as a boosted brakevalve assembly when the aircrafthydraulic system is pressurized.The unit directs flow and pressureto the wheel brake cylinders.The brake pressure delivered isa function of pilot input force,which is proportional to brakedisplacement. When there is nosystem pressure, the unit revertsto manual braking, utilizing a twostage piston arrangement.Rotor Positioning MotorRamp Door Latch ValveRotor positioning for aircraftstorage is provided by twoEaton 5000 psi (34,500 kPa),fixed displacement, inline pistonhydraulic motors. Rated speedis 5,500 rpm with a maximumintermittent speed of 15,000 rpm.Motor displacement is 0.612 cuin/rev. (1.0 ml/rev). Unit weight is2.78 lbs (1.26 kg).This is a solenoid operatred2-stage, normally open, 2-position,3-way valve. When 28 VDC issupplied to the solenoid, hydraulicforce is directed to the unitsinternal spool. The spool moves toblock the 5000 psi (34,500 kPa)and allow the latch acturators tounlatch the door.4EATONAerospace Group C5-11F April 2014Check ValveThe air start check valve is usedfor air starting both the AuxiliaryPower Units (APU) and mainengines.Wing Stow System IsolationValveThis is a solenoid-operated,2-stage, normally closed,2-position, 3-way valve. When 28Vdc is applied to the solenoid,hydraulic force is directed to theunits internal spool. The spoolthen moves to connect upstreamto downstream fluid paths. Apressure switch is incorporated fordownstream pressure indication.Inlet Particle Separator (IPS)BlowerEach ship set includes four 5000psi (34,500 kPa) IPS blowers, twomounted in each engine nacelle.Eaton's blower is capable ofproducing airflow of 2,360 cu ft/minat 92ºF (33ºC) and an air densityof 0.063 lbs/cu ft. Maximumdisplacement is 0.0612 cu in/rev.(1.0 ml/rev) with a rated flow of 3.5gpm (13.24 L/min) at 12,250 rpm.Unit weight is 10.0 lbs (4.54 kg).Hydraulic Fluid PressureReducerThis unit reduces systempressure from 5000 psig(34,500 kPa) to 1860 psig(12,800 kPa) for the brakesystem. It includes a pressurereducer and relief valve.Park, Lock/Transfer ModuleThe park, lock valve providesisolation of fluid between the pilotand copilot’s master cylinders andthe brakes. It also has a lever andpoppets so that when actuated,hydraulic pressure is locked in thebrakes for parking. The unit containsmaintenance-free accumulatorsto provide fluid for thermalcompensation when the unit is inthe park mode. Pressure switchesare incorporated in both right andleft brake pressure indicators.Utility System Isolation ValveThis is a solenoid-operated,2-stage, normally open, 2-position,3-way valve. When 28 VDC issupplied to the solenoid, hydraulicforce is directed to the unitsinternal spool. The spool moves toblock 5000 psi (34,500 kPa) andconnects the utility system to thereservoir. Pressure switches areincorporated for both upstream anddownstream pressure indications.
Ramp Control ValveRemote Switching ValveThe ramp control valve containstwo solenoid-operated, 2-stage,3-position, 4-way valves, asolenoid operated 2-stage, 3-wayvalve, a pressure-reducing valve,relief valve, and pilot-operatedcheck valve. Each of the solenoidoperated valves can also bemanually operated. Using eitherelectrical or manual control,the ramp control valve controlshydraulic flow to the actuators,which raise and lower the cargoramp, open and close the cargodoor and latch the cargo door.Each remote switching valveconsists of a solenoid-operated,2-stage, 2-position, 6-wayswitching valve and a dual coilsolenoid-operated, 2-stage,normally closed, 2-position,3-way isolation valve. The remoteswitching valve performs twoseparate functions. As a switchingvalve it can transfer hydraulicpower for the swashplateactuators from the primary flightcontrol hydraulic system to thenumber 3 flight control/utilityhydraulic system. As an isolationvalve, it controls back-up hydraulicflow from the number 3 flightcontrol/utility system to thehydraulic power drive unit, whichpowers the conversion actuators.Local Switching IsolationValveDC Electric Motor Driven PumpEach local switch isolation valvehas two-stage, 2-position, 6-wayvalves, a solenoid-operated2-stage, 2-position, 3-way valve anda spring-loaded piston type volumecompensator in the isolatedcircuit return path. As a switchingvalve it transfers hydraulic powerfor the swashplate actuatorfrom the primary flight controlhydraulic system to the number3 flight control/utility system. Asan isolation valve it limits powerfrom the primary hydraulic flightcontrol system to a nacelle cuttingoff power to the wing/fuselage/opposite nacelle and interconnecting the system cylinder and returnports, in the event the flight controlcomputer detects hydraulic powersystem failures. In the groundcheckout mode the valve transfershydraulic power from the number3-flight control/utility system to theprimary hydraulic system.Auxiliary hydraulic power isprovided by Eaton's 3000 psi(20,700 kPa), fixed displacement28Vdc electric motor drivenpump. The unit converts aircraftelectrical power into rotary shaftmotion to drive a cantilevershaft mounted, vane pumphaving a displacement of .021 cuin/rev (3.44 ml/rev.). The unit hasa rated flow of 0.34 gpm(1.29 L/min) at 3,000 psi (20,700kPa) and 0.55 gpm (2.08 L/min)at 400 psi (27,600 kPa). Unitweight is 9.8 lbs (4.45 kg).Complex Titanium Wing/Nacelle SwivelsThese swivels are designedto meet the rigorous hydraulicenvironment of the wingand nacelle area of the V-22.Operating at 5000 psi (34,500kPa), these Eaton products helpto deliver hydraulic fluid neededfor the rotation of the enginenacelles. Manufactured fromtitanium material to reduce weightand envelope size, these swivelsmeet the exacting requirementsof the V-22 program.Primary & Back-Up HydraulicPower Drive Unit (HPDU)MotorRotary power and motion issupplied to the pylon conversionactuator HPDU and back-up HPDUby Eaton's 5000 psi (34,500 kPa)fixed displacement, bent-axishydraulic motor. The unit produces4500 in-lb. torque at a rated speedof 6700 rpm with a maximumintermittent speed of 12,000 rpm.Displacement is 0.216 cu/in/rev.(3.54 ml/rev.). Unit weight is 3.50lbs (1.59 kg).EATONWing Rotation Actuator MotorWing rotation power is providedby 5,000 psi (34,500 kPa) inlinepiston motor with 0.105 cu in/rev (1.72 ml/rev) displacement.This motor is used in a blade foldand wing rotation sequence toprepare the aircraft for storage.The motor is installed in the midwing gearbox area and providesthe rotary power required to drivethe turret ring gear for 90 degreestructure rotation. The motorweight is 2.2 lbs (1.0 kg).Engine-Driven PumpHydraulic power for primaryflight control and utilityfunctions is provided by threeEaton 5000 psi (34,500 kPa),variable displacement, pressurecompensated inline piston pumps.Each unit is capable of delivering38 gpm (143 L/min.) flow at 6,000rpm in helicopter mode and 33gpm (124 L/min) flow at 5,075rpm in airplane mode. Otherfeatures include an eleven pistonrotating group, and an integralpressure pulsation attenuator.Maximum displacement is 1.625cu in/rev. (26.6 ml/rev). Unitweight is 22 lbs (9.97 kg).Aerospace Group C5-11F April 20145
Differential Pressure SwitchOptical SensorsPrismalite Chip DetectorsThe differential pressure switchis designed for engine-mountedapplications and other hostileenvironment conditions.These high-reliability, solid statelevel sensors detect oil levels inthe mid-wing, tilt-axis, and proprotor gearboxes. These unitshave no moving parts, are fullyexplosion-proof and protectedfrom transients on the powersupply line.Prismalite sight gauges make oilreservoir levels readable fromabove or below. A solid, darkviewing area appears when fluidcovers the prism. A bright, clearviewing area appears when fluiddoes not cover the prism.Since metallic debris particlesare conductive, these sensorsare designed so that the gapbetween the two electrodes,when bridged by debris, acts asa switch. The V-22 utilizes thesechip detectors in the engines, thefive transmission gearboxes, andin several of the secondary powersystems.LubriclonesDesiccant BreatherSight GaugeChip CollectorThese units are designed tomonitor the critical bearingsand gearsguard in the V-22'smid-wing gearbox, prop-rotorgearbox, tilt-axis gearbox, andengines. High efficiency debrisseparation and concentration ofall particles over 200 micrometersand most particles between 100and 200 micrometers extendsfilter element life and enhancesearly failure detection capability.As an added feature, the vortexseparator also removes the airfrom the oil, with an efficiencyof 95%.These breathers remove moisturefrom air drawn down into thegearbox or transmission toprevent corrosion of critical gearsand bearings. They also indicatewhen a replacement is required.The oblong window allowsviewing large fluid level changes.Various materials are used toaccommodate specific fluids,pressures and temperatures up to2000ºF (1093 C).Located in the oil flow in anauxiliary gearbox, these collectferrous particles that couldindicate impending failure ofthe component. Its self-closingvalve permits withdrawal ofthe magnetic probe and visualinspection of the collected debris,with minimal fluid loss.It may be used to detect fuel or oilfilter clogging or to detect low-fuelbooster pump pressure and forclosing a warning indicator circuit.The switch has a high pressureport and a low pressure port.When the pressure differentialbetween the two ports exceedsthe pre-set value, the snap-actionpressure element is actuated,which then operates an electricalsnap-action switch. The pressureelement does not move untilthe setpoint has been reached,thereby prolonging life andmaintaining repeatability andaccuracy. This design approacheliminates contact chatter duringvibration.6EATONAerospace Group C5-11F April 2014
1817 SeriesLow Profile Ball BearingSwivelsEaton's 1817 series swivels areused in the V-22 hydraulic system.These swivels, operating at 4000psi (27,500 kPa), are designed tominimize torque and maximizeservice life. The swivels aremanufactured from titaniummaterial to minimize envelope sizeand maximize strength.Rynglok FittingsKevlar Hose AssembliesEaton's Aeroquip Kevlarhose assemblies are utilizedextensively throughout theV-22 aircraft to optimize weightreduction throughout thehydraulic system. The AE334hose assemblies are rated foroperating pressures of 5,000 psi(34,500 kPa) and can be found inthe hydraulic supply system. TheAE355 hose assemblies are ratedFittings include permanent andArc Seal connections in straight to 4,000 psi (27,500 kPa) and areused in the low pressure hydraulicelbow, and tee configurations.Rynglok is the quickest, lightest, return system.and most reliable means ofjoining high pressure hydrauliclines throughout the Osprey.The 5000 psi (34,500 kPa) highpressure hydraulic system ofthe V-22 aircraft requires highlycapable fittings. The Aeroquipbrand Rynglok L5/R5 fittings areall Titanium, axial swage fittingsthat provide the link to join fluiddelivery tubing, while minimizingsystem weight.Wire Braided Hose AssembliesConvoluted Hose AssembliesEaton's wire-reinforced mediumpressure hose assembliesare used throughout the lowpressure hydraulic, lube oil andfuel systems. The assemblies arerated for pressures up to 1500 psi(10,300 kPa) and feature a wirereinforced, Tefl
or manual controls located on the valve. The rotor brake valve provides a means of preventing prop-rotor movement when the aircraft engines are shut down. The switching valves are located in the engine nacelles and provide primary hydraulic system pressure to utility hydraulic system transfer, isolation, and ground check-out functions.
Airbus A320, Airbus A330, Bell Boeing V-22 Osprey, Boeing 737, Boeing 787 Dreamliner, Boeing F/A-18 Super Hornet, Boeing T-7A Red Hawk, Dassault Rafale, Eurofighter Typhoon, Sikorsky S-70A Black Hawk See also: Smith Equipment Columbia Research Laboratories Inc (U.S.A.) 1925 Mac Dade Blvd,
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