CBT- COMM Technologies Flashcards
What are the two main comm technologies on the A380?
ARINC 429
Aviation Full DupleX Switched Ethernet (AFDX)
How many networks are on board and what are they? And how to they communicate?
- Avionics Data Communication Network (ADCN)
- The Open World (Pax ethernet/internet, commercial services, maintenance system, ground link)
ADCN Connects the A/C systems
They interconnected via the secure communication interface (SCI) which has a firewall
What are the components of the ACDN?
Two independent identical AFDX networks.
Each AFDX is interconnected with 8 switches (16 total)
What is the function of an AFDX switch?
simultaneously receive and transmit data to the appropriate output ports.
Slide shows ACDN Architecture
What are the main equipment linked to the AFDX?
Conventional and new avionics
How are conventional avionics connected to the AFDX?
Directly to the AFDX network, or
* Via Input/Output Modules (IOM).
What are the types of new avionics on the A380?
- CPIOM: Core Processing Input/Output Modules that are directly connected to the AFDX networks, and
- IOM: Input/Output Modules, gateway between conventional avionics and AFDX networks.
What is CPIOM?
Core Processing Input/Output Modules
It implements the function of several conventional avionics into a respective application of said function installed on the CPIOM. It executes these applications for the systems and manages their input/output of those system applications. So basically its as set of shared avionics intergrating all computing/communication in one or several aircraft systems.
How many CPIOMs are there and what are their types?
22 CPIOM branching to 7 types. A-G
What are CPIOM A-G?
- A: Bleed Air
- B: Air Cond.
- C: Cockpit
- D: Comms
- E: Elec
- F: Fuel
- G: Landing Gear
What happens when a CPIOM fails?
No ECAM alert associated. Connected system will be affected and consequent loss of the application system in the cockpit is seen.
What is an IOM? How many are there?
An IOM manages the transfer to/from AFDX networks of different types of inputs/outputs, generally used by several systems.
Basically a two way bridge between the ADCN and conventional avionics
4 pairs of identical IOM (8 total)
Card showing A380 communication network architecture
What is the effect of IOM losses?
No impact if one or one of each identical pair of IOMs is lost but ECAM will signal redundancy degradation.
If two of a single pair of IOM are lost then the connection between their onside systems and avionics network are lost.
Is there a way for crew to control the ACDN?
No it is fully automated without reset possible
