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A380 Landing Gear and Systems

June 2008 Presented byAndy HebbornAirbus, UKHead of Landing Gear SystemsA380 Landing Gear and Systems HAW Hamburg 5th June 2008 Lecture for RAeS, DGLR, VDI and HAW HamburgDownload from: 2008 DGLR HamburgPage 2 AIRBUS UK LTD. All rights reserved. Confidential and proprietary Landing Gear & Systems An OverviewIntroductionDescription of Landing Gears and Associated Systems Development of Gears Layout Highlight new functions and technologies Overview of Systems Architectures and EquipmentJune 2008 DGLR HamburgPage 3 AIRBUS UK LTD. All rights reserved. Confidential and proprietary A380 The A380 is a completely new, very high capacity, very long rangecommercial transport aircraft, powered by 4 RR Trent 900 orEngine Alliance GP7200 engines Standard A380-800 accommodates 555 Passengers in three-class long-range arrangement MTOW 569 tonnes, MLW 391 tonnes First flight 27 April 2005 Entry into service Oct 2007,with Singapore Airlines Delivery schedule for 2008:13 A/C to Singapore,Qantas and EmiratesA380 Landing Gear & Systems An OverviewThe AircraftJune 2008 DGLR HamburgPage 4 AIRBUS UK LTD.

Nose Landing Gear (2 Wheels) –Body Landing Gear x2 (Bogie Type, 6 Wheels -4 Braked) –Wing Landing Gear x2 (Bogie Type, 4 Wheels -4 Braked) ... •6 x Ø1.805”pistons (split-ball adjuster) •Integral Lug and steel torque pin •Bridgestone Tyre •1400x530 R23 …

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Transcription of A380 Landing Gear and Systems

1 June 2008 Presented byAndy HebbornAirbus, UKHead of Landing Gear SystemsA380 Landing Gear and Systems HAW Hamburg 5th June 2008 Lecture for RAeS, DGLR, VDI and HAW HamburgDownload from: 2008 DGLR HamburgPage 2 AIRBUS UK LTD. All rights reserved. Confidential and proprietary Landing Gear & Systems An OverviewIntroductionDescription of Landing Gears and Associated Systems Development of Gears Layout Highlight new functions and technologies Overview of Systems Architectures and EquipmentJune 2008 DGLR HamburgPage 3 AIRBUS UK LTD. All rights reserved. Confidential and proprietary A380 The A380 is a completely new, very high capacity, very long rangecommercial transport aircraft, powered by 4 RR Trent 900 orEngine Alliance GP7200 engines Standard A380-800 accommodates 555 Passengers in three-class long-range arrangement MTOW 569 tonnes, MLW 391 tonnes First flight 27 April 2005 Entry into service Oct 2007,with Singapore Airlines Delivery schedule for 2008:13 A/C to Singapore,Qantas and EmiratesA380 Landing Gear & Systems An OverviewThe AircraftJune 2008 DGLR HamburgPage 4 AIRBUS UK LTD.

2 All rights reserved. Confidential and proprietary Landing Gear Systems An OverviewMajor Components and Systems4 ATA Chapter 32 Landing Gear Systems4 Gears nose Landing Gear (2 Wheels) Body Landing Gear x2 (Bogie Type, 6 Wheels - 4 Braked) Wing Landing Gear x2 (Bogie Type, 4 Wheels - 4 Braked)4 Extension/Retraction System4 Braking Control System4 Steering Control System nose Wheel Steering Body Wheel Steering4 Wheels, Tyres and Brakes (16 Braked Wheels)4 Monitoring Systems Tyre Pressure Indication System Brake Temperature Monitoring System Oleo Pressure Monitoring SystemJune 2008 DGLR HamburgPage 5 AIRBUS UK LTD. All rights reserved. Confidential and proprietary Landing Gear Configuration Starting Point 38 AlternativesA380 Landing Gear & Systems An OverviewEvolution of Main Landing Gear ConfigurationJune 2008 DGLR HamburgPage 6 AIRBUS UK LTD.

3 All rights reserved. Confidential and proprietary BayFirst Down Selection:2 Family Concepts for the gear and airframeLongitudinal BayA380 Landing Gear & Systems An OverviewEvolution of Main Landing Gear ConfigurationJune 2008 DGLR HamburgPage 7 AIRBUS UK LTD. All rights reserved. Confidential and proprietary Landing Gear & Systems An OverviewEvolution of Main Landing Gear ConfigurationBaseline configurationSecond Down Selection:- Family Concept Selected- KinematicOptions tradedKinematicoptionsBay concept selectedJune 2008 DGLR HamburgPage 8 AIRBUS UK LTD. All rights reserved. Confidential and proprietary Gear Group: Installation in Wing & FuselageA380 Landing Gear & Systems An OverviewEvolution of Main Landing Gear ConfigurationJune 2008 DGLR HamburgPage 9 AIRBUS UK LTD.

4 All rights reserved. Confidential and proprietary gear A380 Landing Gear Systems An OverviewEvolution of Gears Configuration Manoeuvring on ICAO code E and FAA group V airports445m wide runways and 23m taxiways4U-turn on 60m wide runway possible4one concept philosophy for all aircraft variants4each variant capable of optimization4concept capable of development to significantly higher design weights4 ACNsno worse than existing large aircraft 4 nose gear to be compatible withtowbarlesstowing Capable of growth beyond current a/c definitions42 wheel or 4 wheel CLG installation possible Landing Gear Configuration Basic RequirementsJune 2008 DGLR HamburgPage 10 AIRBUS UK LTD. All rights reserved. Confidential and proprietary Rear Spar (Ref)Gear Rib 9 FittingSidestay AssySidestayFittingFwd PintleFittingRetract Actuator (Ref)LocklinksCardanPinFORWARDOUTBOARDMa in FittingBTA FuseAft Pintle PinRetract Actuator CardanPinVIEW LOOKING INBOARD ON PINTLE AXISVIEW LOOKING FORWARD ON WLG SPAR PLANEB ogie Trim Actuator (BTA)Unlock Actuator (with third Downlockspring)

5 DownlockSpringsVIEW RETRACTEDL ower SidestayLock LinksTorque LinksSlave LinksBogie Beam AssyBrake RodsSliding PistonDrag BraceFwd PintlePinGround Locking PinMain FittingRetract ActuatorFuse PinLower CardanPinUpper CardanPinUpper SidestayBogie Trim Actuator Hydraulic DressingsNormal Brake SystemAlternate Brake SystemDownlockHosesRetract Actuator HosesBrake HosesFWDU plockRollerA380 Landing Gear Systems An OverviewWing Landing GearJune 2008 DGLR HamburgPage 11 AIRBUS UK LTD. All rights reserved. Confidential and proprietary Drag BraceLower PanelRetract ActuatorBogie Trim Actuator (BTA)Outer CylinderSliding PistonGround Locking PinFuse PinLower Drag BraceTorque LinksBrake RodsSlave LinksUpper PanelLower PanelUplockRollerLock LinksBogie Beam AssyUpper Drag BraceNormal Brake SystemAlternate Brake SystemSteering SystemLock SpringsNormal Brake ManifoldAlternate Brake ManifoldSteered AxleVIEW RETRACTEDLH BLGVIEW LOOKING AFTLH BLGVIEW LOOKING INBOARDFWDU nlock ActuatorKnuckle Joint LinkUPLOCK FITTING A FITTING H FITTINGFR 63 J FITTING C FITTING G1 FITTING G2 FITTINGSTEERED AXLE DETAILS teering UnlockedSteering LockedSteering Actuator and Steering Hydraulic Control BlockSteering Unlock ActuatorSteering Lock SpringsSteering Wedge LockA380 Landing Gear & Systems An OverviewBody Landing GearJune 2008 DGLR HamburgPage 12

6 AIRBUS UK LTD. All rights reserved. Confidential and proprietary document. Push-to-retract gear actuatorSingle stage oleoSteering Disconnect Panel HVOF-coated sliderMaintenance Panelon LegA380 Landing Gear & Systems An OverviewNose Landing Gear60/70 60/70 FWDNose Wheel Steering(NWS):TowingAngle is +/- 60 Hydraulic SteeringAngle is +/- 70 MechanicalStop Angle is +/- 75 J u n e 2 0 0 8D G L R H a m b ur gP a g e 1 3 AI R B U S U K L T D. All ri g ht s r e s er v e d. C o nfi d e nti al a n d pr o pri et ar y d o c u m e g h S t r e n g t h S t e el ( 3 0 0 M ), e x c e p t: -Ti t a ni u mAl u mi ni u mW ei g ht / C o st / Si z e / Ti m e s c al e Tr a d e -off sA 3 8 0 L a n di n g G e ar & S y st e m s A n O v er vi e wL a n di n g G e ar Str u ct ur eJune 2008 DGLR HamburgPage 14 AIRBUS UK LTD.

7 All rights reserved. Confidential and proprietary Landing Gear Systems An Overview Gears Retraction AnimationJune 2008 DGLR HamburgPage 15 AIRBUS UK LTD. All rights reserved. Confidential and proprietary Wheel & Brake:Braked Wheel Deep Cavity A-Frame 2014-T6 Aluminium Alloy 23 inch rim size 11 Vent Holes 11 Drive keys 22 IconelTie Bolts Segmented Heat-shield Stainless Steel Axle Sleeve Non-Braked Wheel Symmetric A-Frame Brake 5 Rotor Carbenix 4000 heat-sink wear pin 23 spline titanium torque tube Aluminium 7050 piston housing 6 x pistons (split- ball adjuster) Integral Lug and steel torque pin Bridgestone Tyre 1400x530 R23 40PR Lightweight RadialA380 Landing Gear Systems An Overview Main Wheel, Tyre and BrakeJune 2008 DGLR HamburgPage 16 AIRBUS UK LTD.

8 All rights reserved. Confidential and proprietary document. Honeywell Wheel Wheel Symmetric A-Frame 2014-T6 Aluminium Alloy 22 inch rim size IconelTie Bolts Light-weight Aluminium Axle Sleeve Bridgestone Tyre 1270x455 R22 32PR Lightweight RadialA380 Landing Gear Systems An Overview nose Wheel and Tyre June 2008 DGLR HamburgPage 17 AIRBUS UK LTD. All rights reserved. Confidential and proprietary Landing Gear Systems An Overview Power Systems Architecture Hydraulic architecture :45000 psi 42 A/C circuit (Green & Yellow)4 Segregation Between Green and Yellow : BLGsATA32 function on Yellow circuit only WLGs & NLG ATA32 function on Green circuit only4 All hydraulic back-up functions ensured by local hydraulic generation system (LEHGS) owned by the function system Electrical Architecture :4AC :115V Variable frequency4DC:28V with no power transients2 segregated Normal DC :DC1 & DC21 Emergency DC : DC essential1 DC Service BusJune 2008 DGLR HamburgPage 18 AIRBUS UK LTD.

9 All rights reserved. Confidential and proprietary document. Redundancy of hydraulic power for Braking and nose Wheel Steering provided by LEHGS Features:4Re-pressurisesthe HP accumulators to 350 bar throughout the flight 4 Low pressure reservoir with LVDT for level sensing and visual indicator4 Electric motor-pump4 Incorporates health monitoring (fluid and motor temperature sensing, filter clog detection) A380 Landing Gear Systems An Overview Local Hydraulic Power Generation SystemJune 2008 DGLR HamburgPage 19 AIRBUS UK LTD. All rights reserved. Confidential and proprietary )Normal ATA32 functions controlled by shared avionics units for all systems4 Core Processor Input Output Module (Integrated Modular Avionics)CPIOM-G (IMA):All ATA32 System functions Control functions and indication management Central monitoring functions (BITE) Main interfaces to other A/C Systems 4 Remote Data ConcentratorLanding Gear RDCs:Extension/Retraction (LGERS)and Monitoring (LGMS) Specific Systems sensors Acquisitions Ext/Ret Valves and Actuators second order control Local monitoringIinterface RDCs.

10 Braking and Steering (BSCS) A/SKID and pressure control loop function Specific Systems sensors Acquisitions Local monitoring2) Emergency ATA32 functions controlled by specific analogue units,independent of IMA and AFDX avionics technology4 Brake Control : Emergency Brake Control (EBCU) 4 Ext/Ret Free Fall : Free-Fall Control (FFCM)A380 Landing Gear Systems An Overview System Avionics ArchitectureJune 2008 DGLR HamburgPage 21 AIRBUS UK LTD. All rights reserved. Confidential and proprietary document. Oleo pressure is monitored simultaneously on all Landing gear shock absorbers and any warning is passed on to the Flight Warning System. Prevents departure withmis-serviced Landing Gear Accurate Check - performed once per flight, after gear extension Gross Check - continuous monitoring Combined Pressure and Temperature sensor mounted on each Shock AbsorberOPMS is designed to: Provide a warning when one or more L/G oleo pressure is outside defined limits.


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