AIRBUS ENGIN OUT AND AUTO RELIGHT

Presented by: VITU-BARBIER Nicolas Flight Operations Engineer Engine flame out and auto relight Content Review of engine auto relight function Review of ECAM STATUS Electrical architecture Hydraulic architecture Operational documentation © AIRBUS S.A.S. All rights reserved. Confidential and proprietary document. Conclusion Engine flame out and auto relight April 2007 Page 2 Content Review of engine auto relight function Review of ECAM STATUS Electrical architecture Hydraulic architecture Operational documentation © AIRBUS S.A.S. All rights reserved. Confidential and proprietary document. Conclusion Engine flame out and auto relight April 2007 Page 3 Review of engine auto relight function Engine flame out process • A flame out occurs when the combustion process stops due to: Heavy rain, hail, icing, ice crystals Engine stall Volcanic ash encountered Fuel starvation Control system malfunctions © AIRBUS S.A.S. All rights reserved. Confidential and proprietary document. • Flight crew is warned of a flame out: By ECAM caution/warning (if applicable) When there is a rapid decrease in engine parameters Engine flame out and auto relight April 2007 Page 4 Review of engine auto relight function Engine flame out events • Over the last two years several flame out occurred Single flame outs Dual flame out on A330 • In each case engines automatically relit • FADEC logic evolutions and in service event analysis © AIRBUS S.A.S. All rights reserved. Confidential and proprietary document. Good reliability of the auto relight function • Lead to questions regarding the selection of IGN/START when flame out conditions are suspected Engine flame out and auto relight April 2007 Page 5 . Confidential and proprietary document. Takeoff Depends on FADEC std Master lever cycled ALL Engine flame out and auto relight April 2007 Page 6 .A.Review of engine auto relight function Automatic ignition logic APP IDLE Depends on FADEC std Flameout detected ALL FADEC Stall/Surge Depends on FADEC std NAI ON Depends on FADEC std Severe rain/Hail Depends on FADEC std FADEC © AIRBUS S.S. All rights reserved. Ensures good igniters’ reliablity Airbus does not recommend setting the engines rotary selector in the IGN/START position when inclement weather conditions are encountered in cruise Engine flame out and auto relight April 2007 Page 7 .Review of engine auto relight function Automatic ignition logic (Cont’d) • As soon as a flame out condition is detected.A. Confidential and proprietary document.S. All rights reserved. FADEC automatically select continuous ignition • Selecting IGN/START (continuous ignition) does not help preventing flameout • Not Selecting IGN/START when inclement weather conditions are encountered: Saves igniter’s life © AIRBUS S. A. Conclusion Engine flame out and auto relight April 2007 Page 8 .Content Review of engine auto relight function Review of ECAM STATUS Electrical architecture Hydraulic architecture Operational documentation © AIRBUS S.S. All rights reserved. Confidential and proprietary document. All rights reserved.A.Review of ECAM STATUS A330/A340 family © AIRBUS S. A320 family Engine flame out and auto relight April 2007 Page 9 . Confidential and proprietary document.S. S. All rights reserved.A.Content Review of engine auto relight function Review of ECAM STATUS Electrical architecture Hydraulic architecture Operational documentation © AIRBUS S. Confidential and proprietary document. Conclusion Engine flame out and auto relight April 2007 Page 10 . All rights reserved.Review of ECAM STATUS – Electrical architecture A330/A340 family • Basic configuration A330 e x am ple DC ESS DC 2 DC 1 DC ESS SHED AC LAND RCVRY TR 1 ESS TR DC LAND RCVRY AC ESS SHED TR 2 © AIRBUS S. AC ESS emergency generator AC 1 AC 2 GEN 1 GEN 2 IDG 2 IDG 1 Engine flame out and auto relight April 2007 Page 11 . Confidential and proprietary document.A.S. S. All rights reserved.Review of ECAM STATUS – Electrical architecture A330 A330/A340 family e x am • All engine Flame out ple • Emergency generator on RAT (no hydraulic engine driven pumps and windmilling insufficient DC 1 DC ESS DC ESS SHED AC LAND RCVRY DC 2 TR 1 ESS TR DC LAND RCVRY AC ESS SHED TR 2 © AIRBUS S. Confidential and proprietary document.A. AC ESS emergency generator AC 1 AC 2 GEN 1 GEN 2 IDG 2 IDG 1 Engine flame out and auto relight April 2007 Page 12 . Confidential and proprietary document.S. All rights reserved.A. AC ESS emergency generator AC 1 AC 2 GEN 1 GEN 2 IDG 2 IDG 1 Engine flame out and auto relight April 2007 Page 13 .Review of ECAM STATUS – Electrical architecture A330 A330/A340 family e x am • Engines recovered ple • Emergency generator on hydraulic engine driven pump DC 1 DC ESS DC ESS SHED AC LAND RCVRY DC 2 TR 1 ESS TR DC LAND RCVRY AC ESS SHED TR 2 © AIRBUS S. Bus bars recovered • AC 1 & 2 • DC 1 & 2 Bus bars still lost • AC LAND RCVRY • DC LAND RCVRY GEN 2 IDG 2 Eng 1 & 2 IDG 1 emergency generator • AC & DC ESS • AC & DC ESS SHED April 2007 Page 14 Engine flame out and auto relight .S. All rights reserved. Confidential and proprietary document.A.Review of ECAM STATUS – Electrical architecture A330/A340 family All engine lost Generators emergency generator A330 e x am ple Bus bars available • AC ESS • DC ESS Engines recovered Generators GEN 1 © AIRBUS S. Confidential and proprietary document.S.A. BSCU1.. SFCC1…are recovered © AIRBUS S. LGCUI1. All rights reserved.ON Pressing LAND RECOVERY…ON AC & DC LAND RCVRY bus bar recovered ILS1. Landing using ILS possible (when no MMR) EGPWS receive landing gear position info Engine flame out and auto relight April 2007 Page 15 .Review of ECAM STATUS – Electrical architecture A330/A340 family ECAM STATUS LAND RECOVERY……. – .FOR SLATS EXTENSION – Since SFCC2 is recovered when engines are recovered.S. Slats/Flaps can be normally extended Wording modification studied: © AIRBUS S.A.JUST BEFORE SLATS EXTENSION Engine flame out and auto relight April 2007 Page 16 .AT SLATS EXTENSION – . Confidential and proprietary document.BEFORE SLATS EXTENSION – . All rights reserved.Review of ECAM STATUS – Electrical architecture A330/A340 family ECAM STATUS . BEFORE SLATS EXTENSION – Risk to set LAND RECOVERY ON too early (TOD) • If no engine recovered.JUST BEFORE SLATS EXTENSION – Less clear than current wording Engine flame out and auto relight April 2007 Page 17 . – Risk that flight crews try to extend Slats/Flaps before setting LAND RECOVERY ON (no engine recovered) . electrical load balance no longer guaranteed • Fuel pumps shed too early .A. All rights reserved.S.AT SLATS EXTENSION © AIRBUS S. Confidential and proprietary document.Review of ECAM STATUS – Electrical architecture A330/A340 family ECAM STATUS . Confidential and proprietary document. when at least one engine is recovered: AC & DC LAND RCVRY BUS bars are still shed “LAND RECOVERY……. “FOR SLATS EXTENSION” current wording kept Apply ECAM Engine flame out and auto relight April 2007 Page 18 .Review of ECAM STATUS – Electrical architecture A330/A340 family summary Following all engine flameout.A.S.ON” still required © AIRBUS S. All rights reserved. A.Review of ECAM STATUS – Electrical architecture A320 family • Basic configuration DC 1 DC ESS DC 2 AC ESS SHED TR 1 DC ESS SHED TR 2 © AIRBUS S. Confidential and proprietary document.S. All rights reserved. AC ESS emergency generator AC 1 AC 2 GEN 1 GEN 2 IDG 2 IDG 1 Engine flame out and auto relight April 2007 Page 19 . Review of ECAM STATUS – Electrical architecture A320 family • All engine Flame out • Emergency generator on RAT (no hydraulic EDP.S. windmilling insufficient) DC 1 DC ESS DC 2 AC ESS SHED TR 1 DC ESS SHED TR 2 ESS TR © AIRBUS S.A. AC ESS emergency generator AC 1 AC 2 GEN 1 GEN 2 IDG 2 IDG 1 Engine flame out and auto relight April 2007 Page 20 . Confidential and proprietary document. All rights reserved. Review of ECAM STATUS – Electrical architecture A320 family • Engines recovered • Emergency generator on hydraulic engine driven pumps DC 1 DC ESS DC 2 AC ESS SHED TR 1 DC ESS SHED TR 2 ESS TR © AIRBUS S. AC ESS emergency generator AC 1 AC 2 GEN 1 GEN 2 IDG 2 IDG 1 Engine flame out and auto relight April 2007 Page 21 .S. All rights reserved. Confidential and proprietary document.A. A.Review of ECAM STATUS – Electrical architecture A320 family All engine lost Generators emergency generator Bus bars available • AC & DC ESS • AC & DC ESS SHED Engines recovered Generators GEN 1 © AIRBUS S. Confidential and proprietary document.S. Bus bars recovered • AC 1 & 2 • DC 1 & 2 Bus bar still lost GEN 2 IDG 2 IDG 1 NIL Eng 1 & 2 emergency generator • AC & DC ESS • AC & DC ESS SHED April 2007 Page 22 Engine flame out and auto relight . All rights reserved. Review of ECAM STATUS – Electrical architecture A320 family summary Following all engine flameout. Confidential and proprietary document. Apply ECAM Engine flame out and auto relight April 2007 Page 23 . All rights reserved.A.S. when at least one engine is recovered: • No shed bus bar until landing (or landing gear extension) • Only the MIN RAT SPEED remains displayed RAT is still extended © AIRBUS S. S.A. Confidential and proprietary document.Content Review of engine auto relight function Review of ECAM STATUS Electrical architecture Hydraulic architecture Operational documentation © AIRBUS S. Conclusion Engine flame out and auto relight April 2007 Page 24 . All rights reserved. A. Confidential and proprietary document.S. Engine flame out and auto relight April 2007 Page 25 . All rights reserved.Review of ECAM STATUS – Hydraulic architecture A330/A340 family • Basic configuration 3000 psi 3000 psi 3000 psi A330 e x am ple © AIRBUS S. RAT extension 2500 psi 0 psi 0 psi A330 e x am ple © AIRBUS S.A.S.Review of ECAM STATUS – Hydraulic architecture A330/A340 family • All engine flame out. Engine flame out and auto relight April 2007 Page 26 . Confidential and proprietary document. All rights reserved. Confidential and proprietary document. All rights reserved. RAT still out 3000 psi 3000 psi 0 psi A330 e x am ple © AIRBUS S.S. Engine flame out and auto relight April 2007 Page 27 .A.Review of ECAM STATUS – Hydraulic architecture A330/A340 family • Recovery of one engine. S. Confidential and proprietary document. • However the ECAM STATUS still shows the following: © AIRBUS S. Engine flame out and auto relight April 2007 Page 28 . All rights reserved.A.Review of ECAM STATUS – Hydraulic architecture A330/A340 family ECAM STATUS Engine 1 recovery (A330 example) • Green hydraulic Engine Driven Pump 1 (EDP 1) recovered EDP1 takes over the Green hydraulic pressurization • Blue hydraulic recovered. Confidential and proprietary document. All rights reserved.Review of ECAM STATUS – Hydraulic architecture A330/A340 family ECAM STATUS • Current ECAM logic aims at covering all cases Engines recovered Engines not recovered © AIRBUS S.A. • Extending the landing gear by gravity Minor consequences (nose wheel steering loss) Apply ECAM Engine flame out and auto relight April 2007 Page 29 .S. Engine flame out and auto relight April 2007 Page 30 .Review of ECAM STATUS – Hydraulic architecture A320 family • Basic configuration 3000 psi 3000 psi 3000 psi © AIRBUS S.S.A. Confidential and proprietary document. All rights reserved. A. RAT extension 0 psi 2500 psi 0 psi © AIRBUS S.Review of ECAM STATUS – Hydraulic architecture A320 family • All engine flame out.S. Confidential and proprietary document. Engine flame out and auto relight April 2007 Page 31 . All rights reserved. Confidential and proprietary document.A. Engine flame out and auto relight April 2007 Page 32 . All rights reserved. RAT still out 3000 psi 3000 psi 3000 psi OFF © AIRBUS S.Review of ECAM STATUS – Hydraulic architecture A320 family • Recovery of one engine.S. All rights reserved.Review of ECAM STATUS – Hydraulic architecture A320 family ECAM STATUS Engine 1 recovery (example) ECAM STATUS only displays the RAT limitation © AIRBUS S.A. Confidential and proprietary document.S. Apply ECAM Engine flame out and auto relight April 2007 Page 33 . Content Review of engine auto relight function Review of ECAM STATUS Electrical architecture Hydraulic architecture Operational documentation © AIRBUS S.S.A. Conclusion Engine flame out and auto relight April 2007 Page 34 . Confidential and proprietary document. All rights reserved. S. Confidential and proprietary document.Review of ECAM STATUS – Operational documentation FCOM Enhancements The ELEC EMER CONFIG procedure after engine/generator recovery The ENG ALL ENG FLAME OUT/ ENG DUAL FAILURE procedures after all engine recovery Minor FCOM volume 1 clarifications © AIRBUS S. QRH Enhancements The ENG ALL ENG FLAME OUT/ ENG DUAL FAILURE procedures after all engine recovery Engine flame out and auto relight April 2007 Page 35 . All rights reserved.A. A. All rights reserved.S. Engine flame out and auto relight April 2007 Page 36 . Confidential and proprietary document.Review of ECAM STATUS – Operational documentation FCOM Enhancements ELEC EMER CONFIG A 330 A 340 © AIRBUS S. Confidential and proprietary document. All rights reserved. Engine flame out and auto relight April 2007 Page 37 .S.A.Review of ECAM STATUS – Operational documentation FCOM Enhancements ELEC EMER CONFIG (Cont’d) A 330 A 340 © AIRBUS S. A. Engine flame out and auto relight April 2007 Page 38 .S.Review of ECAM STATUS – Operational documentation FCOM Enhancements ENG ALL ENG FLAME OUT/ ENG DUAL FAILURE A 320 A 330 A 340 © AIRBUS S. All rights reserved. Confidential and proprietary document. Review of ECAM STATUS – Operational documentation FCOM Enhancements ENG ALL ENG FLAME OUT A 330 A 340 © AIRBUS S. All rights reserved. Confidential and proprietary document.A. Engine flame out and auto relight April 2007 Page 39 .S. Review of ECAM STATUS – Operational documentation QRH Enhancements DUAL FAILURE / ALL ENG FLAME OUT A 320 A 330 A 340 © AIRBUS S. Engine flame out and auto relight April 2007 Page 40 .A. Confidential and proprietary document. All rights reserved.S. Confidential and proprietary document.S. All rights reserved.A.Content Review of engine auto relight function Review of ECAM STATUS Electrical architecture Hydraulic architecture Operational documentation © AIRBUS S. Conclusion Engine flame out and auto relight April 2007 Page 41 . Apply ECAM Engine flame out and auto relight April 2007 Page 42 .A.S.Conclusion • Confident in auto relight function • Current ECAM procedure ensures safe aircraft operation • FCOM/QRH have been enhanced to take into account engine(s)/generator(s) recovery after the loss of all the engines/generators © AIRBUS S. All rights reserved. Confidential and proprietary document. A. This Presentation. in whole or in part. you accept on behalf of your company to comply with the following. for the sole purpose of information.S.A. No other property rights are granted by the delivery of this Presentation than the right to read it. When additional information is required. illustrations and photos shall not be modified nor reproduced without prior written consent of Airbus S. affecting the true public representation. 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