AIRBUS ENGIN OUT AND AUTO RELIGHT

Presented by:

VITU-BARBIER Nicolas Flight Operations Engineer

Engine flame out and auto relight

Content Ò Review of engine auto relight function Ò Review of ECAM STATUS ÒElectrical architecture ÒHydraulic architecture

© AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.

ÒOperational documentation

Ò Conclusion

Engine flame out and auto relight

April 2007

Page 2

Content Ò Review of engine auto relight function Ò Review of ECAM STATUS ÒElectrical architecture ÒHydraulic architecture

© AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.

ÒOperational documentation Ò 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: 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.

Heavy

• 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

© AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.

• In each case engines automatically relit • FADEC logic evolutions and in service event analysis 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

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 Severe rain/Hail

Depends on FADEC std

Depends on FADEC std

© AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.

FADEC Master lever cycled

Takeoff Depends on FADEC std

Engine flame out and auto relight

ALL

April 2007

Page 6

Review of engine auto relight function Automatic ignition logic (Cont’d)

• As soon as a flame out condition is detected, 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: © AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.

Saves

igniter’s life

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

Content Ò Review of engine auto relight function Ò Review of ECAM STATUS ÒElectrical architecture ÒHydraulic architecture

© AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.

ÒOperational documentation Ò Conclusion

Engine flame out and auto relight

April 2007

Page 8

Review of ECAM STATUS

© AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.

A330/A340 family

A320 family

Engine flame out and auto relight

April 2007

Page 9

Content Ò Review of engine auto relight function Ò Review of ECAM STATUS ÒElectrical architecture ÒHydraulic architecture

© AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.

ÒOperational documentation Ò Conclusion

Engine flame out and auto relight

April 2007

Page 10

Review of ECAM STATUS – Electrical architecture A330 e x am ple

A330/A340 family • Basic configuration

DC 1

DC 2

DC ESS DC ESS SHED AC LAND RCVRY

TR 2

TR 1 ESS TR AC ESS SHED

© AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.

DC LAND RCVRY

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

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 2

DC ESS DC ESS SHED AC LAND RCVRY

TR 2

TR 1 ESS TR AC ESS SHED

© AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.

DC LAND RCVRY

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

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 2

DC ESS DC ESS SHED AC LAND RCVRY

TR 2

TR 1 ESS TR AC ESS SHED

© AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.

DC LAND RCVRY

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 e x am ple

A330/A340 family All engine lost Generators emergency generator

Bus bars available • AC ESS • DC ESS

Engines recovered Generators © AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.

GEN 1

GEN 2

Bus bars recovered • AC 1 & 2 • DC 1 & 2

IDG 2

Eng 1 & 2

IDG 1

emergency generator

Engine flame out and auto relight

Bus bars still lost • AC LAND RCVRY • DC LAND RCVRY

• AC & DC ESS • AC & DC ESS SHED April 2007

Page 14

Review of ECAM STATUS – Electrical architecture A330/A340 family ECAM STATUS LAND RECOVERY……..ON Pressing LAND RECOVERY…ON AC & DC LAND RCVRY bus bar recovered

© AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.

ILS1, BSCU1, LGCUI1, SFCC1…are recovered

Landing using ILS possible (when no MMR)

Engine flame out and auto relight

EGPWS receive landing gear position info

April 2007

Page 15

Review of ECAM STATUS – Electrical architecture A330/A340 family ECAM STATUS

.FOR

SLATS EXTENSION

– Since SFCC2 is recovered when engines are recovered, Slats/Flaps can be normally extended

© AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.

Wording

modification studied:

– .BEFORE SLATS EXTENSION

– .AT SLATS EXTENSION

– .JUST BEFORE SLATS EXTENSION Engine flame out and auto relight

April 2007

Page 16

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, electrical load balance no longer guaranteed • Fuel pumps shed too early

© AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.

.AT

SLATS EXTENSION

– Risk that flight crews try to extend Slats/Flaps before setting LAND RECOVERY ON (no engine recovered) .JUST

BEFORE SLATS EXTENSION

– Less clear than current wording

Engine flame out and auto relight

April 2007

Page 17

Review of ECAM STATUS – Electrical architecture A330/A340 family summary

Following all engine flameout, when at least one engine is recovered: AC

& DC LAND RCVRY BUS bars are still shed

© AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.

“LAND “FOR

RECOVERY…….ON” still required

SLATS EXTENSION” current wording kept

Apply ECAM Engine flame out and auto relight

April 2007

Page 18

Review of ECAM STATUS – Electrical architecture A320 family • Basic configuration

DC 1

DC 2

DC ESS

AC ESS SHED

© AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.

TR 1

DC ESS SHED

TR 2

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, windmilling insufficient) DC 1

DC 2

DC ESS

AC ESS SHED

TR 1

DC ESS SHED

TR 2

© AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.

ESS TR

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

Review of ECAM STATUS – Electrical architecture A320 family • Engines recovered • Emergency generator on hydraulic engine driven pumps DC 1

DC 2

DC ESS

AC ESS SHED

TR 1

DC ESS SHED

TR 2

© AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.

ESS TR

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

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 © AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.

GEN 1

Bus bars recovered

Bus bar still lost

GEN 2

IDG 2

• AC 1 & 2 • DC 1 & 2

NIL

IDG 1

Eng 1 & 2 emergency generator

Engine flame out and auto relight

• AC & DC ESS • AC & DC ESS SHED April 2007

Page 22

Review of ECAM STATUS – Electrical architecture A320 family summary

Following all engine flameout, when at least one engine is recovered: • No shed bus bar until landing (or landing gear extension) • Only the MIN RAT SPEED remains displayed

© AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.

 RAT

is still extended

Apply ECAM Engine flame out and auto relight

April 2007

Page 23

Content Ò Review of engine auto relight function Ò Review of ECAM STATUS ÒElectrical architecture ÒHydraulic architecture

© AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.

ÒOperational documentation Ò Conclusion

Engine flame out and auto relight

April 2007

Page 24

Review of ECAM STATUS – Hydraulic architecture A330/A340 family • Basic configuration

© AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.

3000 psi

Engine flame out and auto relight

3000 psi

A330 e x am ple 3000 psi

April 2007

Page 25

Review of ECAM STATUS – Hydraulic architecture A330/A340 family • All engine flame out, RAT extension

© AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.

2500 psi

Engine flame out and auto relight

0 psi

A330 e x am ple 0 psi

April 2007

Page 26

Review of ECAM STATUS – Hydraulic architecture A330/A340 family • Recovery of one engine, RAT still out

© AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.

3000 psi

Engine flame out and auto relight

3000 psi

A330 e x am ple

0 psi

April 2007

Page 27

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

© AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.

• Blue hydraulic recovered. • However the ECAM STATUS still shows the following:

Engine flame out and auto relight

April 2007

Page 28

Review of ECAM STATUS – Hydraulic architecture A330/A340 family ECAM STATUS

• Current ECAM logic aims at covering all cases recovered Engines not recovered

© AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.

Engines

• Extending the landing gear by gravity Minor

consequences (nose wheel steering loss)

Apply ECAM Engine flame out and auto relight

April 2007

Page 29

Review of ECAM STATUS – Hydraulic architecture A320 family • Basic configuration

© AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.

3000 psi

Engine flame out and auto relight

3000 psi

3000 psi

April 2007

Page 30

Review of ECAM STATUS – Hydraulic architecture A320 family • All engine flame out, RAT extension

© AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.

0 psi

Engine flame out and auto relight

2500 psi

0 psi

April 2007

Page 31

Review of ECAM STATUS – Hydraulic architecture A320 family • Recovery of one engine, RAT still out 3000 psi

3000 psi

3000 psi

© AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.

OFF

Engine flame out and auto relight

April 2007

Page 32

Review of ECAM STATUS – Hydraulic architecture A320 family ECAM STATUS

Engine 1 recovery (example)

© AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.

ECAM

STATUS only displays the RAT limitation

Apply ECAM Engine flame out and auto relight

April 2007

Page 33

Content Ò Review of engine auto relight function Ò Review of ECAM STATUS ÒElectrical architecture ÒHydraulic architecture

© AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.

ÒOperational documentation Ò Conclusion

Engine flame out and auto relight

April 2007

Page 34

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

© AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.

Minor

FCOM volume 1 clarifications

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

Review of ECAM STATUS – Operational documentation A 330

FCOM Enhancements

© AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.

ELEC

A 340

EMER CONFIG

Engine flame out and auto relight

April 2007

Page 36

Review of ECAM STATUS – Operational documentation A 330

FCOM Enhancements

© AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.

ELEC

A 340

EMER CONFIG (Cont’d)

Engine flame out and auto relight

April 2007

Page 37

Review of ECAM STATUS – Operational documentation FCOM Enhancements ENG

ALL ENG FLAME OUT/ ENG DUAL FAILURE A 320 A 330

© AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.

A 340

Engine flame out and auto relight

April 2007

Page 38

Review of ECAM STATUS – Operational documentation A 330

FCOM Enhancements

© AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.

ENG

A 340

ALL ENG FLAME OUT

Engine flame out and auto relight

April 2007

Page 39

Review of ECAM STATUS – Operational documentation QRH Enhancements DUAL

A 320

FAILURE / ALL ENG FLAME OUT

A 330

© AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.

A 340

Engine flame out and auto relight

April 2007

Page 40

Content Ò Review of engine auto relight function Ò Review of ECAM STATUS ÒElectrical architecture ÒHydraulic architecture

© AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.

ÒOperational documentation Ò Conclusion

Engine flame out and auto relight

April 2007

Page 41

Conclusion

• Confident in auto relight function • Current ECAM procedure ensures safe aircraft operation

• FCOM/QRH have been enhanced to take into account

© AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.

engine(s)/generator(s) recovery after the loss of all the engines/generators

Apply ECAM

Engine flame out and auto relight

April 2007

Page 42

Proprietary document. By taking delivery of this Presentation (hereafter “Presentation”), you accept on behalf of your company to comply with the following. No other property rights are granted by the delivery of this Presentation than the right to read it, for the sole purpose of information. This Presentation, its content, illustrations and photos shall not be modified nor reproduced without prior written consent of Airbus S.A.S. This Presentation and the materials it contains shall not, in whole or in part, be sold, rented, or licensed to any third party subject to payment or not. This Presentation may contain market-sensitive or other information that is correct at the time of going to press. This information involves a number of factors which could change over time, affecting the true public representation. Airbus assumes no obligation to update any information contained in this document or with respect to the information described herein. The statements made herein do not constitute an offer or form part of any contract. They are based on Airbus information and are expressed in good faith but no warranty or representation is given as to their accuracy. When additional information is required, Airbus S.A.S can be contacted to provide further details. Airbus S.A.S shall assume no liability for any damage in connection with the use of this Presentation and the materials it contains, even if Airbus S.A.S has been advised of the likelihood of such damages. This licence is governed by French law and exclusive jurisdiction is given to the courts and tribunals of Toulouse (France) without prejudice to the right of Airbus to bring proceedings for infringement of copyright or any other intellectual property right in any other court of competent jurisdiction.