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Processes and Methods for
Integrated Modular Avionics
Presentation at USA - EU Workshop
Paris, July 7th 2005
Presented by
Gert DÖHMEN
AIRBUS Germany
Page 2
© AIRBUS DEUTSCHLAND GmbH. Alle Rechte vorbehalten. Vertrauliches und geschütztes Dokument.
Integrated Modular Avionics (IMA)
A
LRU A
LRU B
B Airborne
Functions
Integrated
Avionics
Conventional
Avionics
LRU C C
LRM 1
LRM 2
Identical Hardware & Kernel Software used for different
Airborne Functions in Flight Control & Utility Functions
Page 3
© AIRBUS DEUTSCHLAND GmbH. Alle Rechte vorbehalten. Vertrauliches und geschütztes Dokument. Targeted IMA Advantages
• Reduction of Weight / Volume / Power consumption of
the Avionics
• Reduction of material stocks within Airline Maintenance
Centers
• Reduction of cost for Versions-Upgrades (core HW &
SW)
• Reduction of cost for functional enhancements
• Reduction of cost through the emerging market of open
standards
Page 4
© AIRBUS DEUTSCHLAND GmbH. Alle Rechte vorbehalten. Vertrauliches und geschütztes Dokument. IMA Concept -
LRU /
LRM based Architecture
AFDX Switch
LRU
AFDX interface
Static cabling configuration
1 new link = AFDX switch configuration
table update
LRM
module
AFDX link
LRU6
ARINC 429 world IMA world
LRU5
LRU2
LRU1
LRU7
ARINC 429 interface
LRU4
1 new link = 1 new cable
ARINC 429 link
CPIOM
CPIOM
IOM
LRU
AFDX Switch
AFDX E/S
Page 5
© AIRBUS DEUTSCHLAND GmbH. Alle Rechte vorbehalten. Vertrauliches und geschütztes Dokument. ADCN Network Architecture -
Functional Domains
WARNING: old obsolete architecture for functional domain description only!
Engines
Cabin
Fuel&LG
Energy
Cockpit
Flight
Control
AESU1
EEC1
EEC2
FCSC1
COM MON
FCGC2 FCSC2
FCGC3
SFCC2
COM MON COM MON
SFCC1
FCGC1
ADIRU1
ADIRU3
ADIRU2
FM3
FM1 FM2
FW2
FCDC2
FW1
FCDC1
AESU2
ACR2 opt
SCI
L1 L2 R2 R1
C2 R3
C1
SW13
IOM
ELM
CBM
SB24
ELM
CBM
SB24
Fuel
COM MON
Fuel
COM MON LG,TP&BS
CIDS
CPIOM-B-1&2
CIDS
CPIOM-A-3&4CPIOM-B-3&4
IRDC
COM MON
LG,TP&BS
COM MON
COM MON COM MON COM MON
IOM
ACR1
SCI
CPIOM-A-1&2
PESC
SPDB
IPCU
SPDB
VSC
PWCU
IRDC
DSMC1&2 DSMC3
ext lights
ctrl
IPCU
ECB
HSM
AIC?
HSM
AIC?
COM MON FCSC3 TBC
COM MON
L3
IOM CDAM IOM
ATC1
ATC2
A
AB
B
EEC3
EEC4 AB
BA
S_2
_1
S_3
_1
S_4
_1
S_1
_1
S_3
_2
S_4
_2
S_1
_2
S_2
_2
S_1
_3
Page 6
© AIRBUS DEUTSCHLAND GmbH. Alle Rechte vorbehalten. Vertrauliches und geschütztes Dokument. Flow Separation Concept
VL1
VL2
VL3
Physical
Logical Link
representation
of a Virtual Link
Ethernet
controller
Switching Fabric
SWITCH
TX Transmit MAC
RX TX RX TX RX TX
Appl. 1
Appl. 2
Appl. 3
Physical Link
Virtual Links
End-System 1
End-System 1
End-System 2
End-System 3
End-System 4
End-
System
3
TX RX
End-
System
3
TX RX
End-
System
3
TX RX
RX Receive MAC
The Virtual Link Concept
VL2
Page 7
© AIRBUS DEUTSCHLAND GmbH. Alle Rechte vorbehalten. Vertrauliches und geschütztes Dokument. LRM /
CPIOM Hardware
Four electronic boards :
- One CPU board
- One Power supply and I/O board
- Two I/O boards
ARINC 600 SIZE 2
Connector
Backplane
SIS module connector
PCI interconection
board
• ARINC 600, 3 MCU
• Approximately 4 kg
• Powered by 28VDC (some on ESS bus)
• ARINC 600 conn., 368 pins + 2 QUADRAX
• Hardware pin programming identifies domain, location,
side, aircraft (MAC and IP addressing on Aircraft Data
Communication Network (ADCN))
Page 8
© AIRBUS DEUTSCHLAND GmbH. Alle Rechte vorbehalten. Vertrauliches und geschütztes Dokument. Building blocks of an Integrated CPIOM
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