Integrated Modular Avionics Q’s Flashcards
A controller area network bus is a
Serial communications protocol
IMA 3rd generation uses
AFDX
IMA partioning is designed to achieve
Segregation and prevention of potentially conflicting and hazardous data from other sources
A CAN bus requires
No host computer
A CAN bus transmits at data rates upto
1Mb/sec for cable lengths up to 40 metres
How does an IMA AFDX control the input output functions
They use a star topology with 4 sets of wires
A CPIOM module communicates with the ADCN via its
AFDX end system board
In an IMA AFDX system what replaces conventional LRUs
General processor modules
A CPIOM which is designated as a monitor performs
Monitoring and testing on the primary lane and will switch to command if the health of the primary lane deteriorates
A data frame on an Ethernet system contains
Both source and destination addresses
A deterministic ADN used on a certified integrated modular avionic system must have a bit error rate of no more than
1 in 10-12
A loss of a single input/output module
Will have no aircraft system effect
A loss of multiple mirrored IOMs
Will always have an aircraft systems effect and will trigger the master caution
A loss of multiple non-mirrored IOM
Will have no aircraft system effect
A virtual link in an ADCN is
Unidirectional
A virtual links bandwidth allocation gap consists of
Maximum frame time and minimum time between transmission
AFDX switches are
Interchangeable but may require software reconfiguration
AFDX switches contain what software
Operation program software and configuration table software
An active AFDX subscriber connected to an AFDX network to communicate with other subscribers respecting AFDX rules is called
An end system
An avionic structure that has major functions implemented in LRUs that interchange information over digital data uses is known as
A federated architectural system
An ADCN uses
Two active parallel identical networks
An IOM
Never hosts avionics applications
An integrated modular avionic systems utilises
An Ethernet network
An IMA system utilises
A virtual back plane communication system
AFDX switches Ethernet
Utilises commercial off the shelf hardware
AFDX data rates are
10 or 100 Mbps
AFDX is
Full duplex
AFDX switches Ethernet is based on
IEEE 802.3 Ethernet specification
AFDX switches Ethernet uses
A star topology network
AFDX switches Ethernet uses
Either copper or fibre optic transmission
Conventional LRUs which do not have AFDX capability
Can be connected to an IMA line replaceable module only by direct wire connection
CPIOMs are
Interchangeable but maybrequire software reconfiguration
CPIOMs are powered by
28VDC
Deterministic performance of an Ethernet system used for an IMA system network is provided
By use of virtual links signing the Ethernet network system
Differences between CPIOMs are determined by
The type of system of the computer interfaces with
How does AFDX transmit data
Through ADCN
In an atomic 653 certified IMA system
It is permitted to add software such as health monitoring or mission support functions within new ARINC 653 partitions that may not be certified to the same level as flight critical function a
In an IMA system software is upgraded
Without the need to upgrade the hardware
In the event of a single AFDX switch loss
There will be no aircraft systems effect due to the redundant duplication of networks in the ADCN
In the event of multiple AFDX switch losses on both of the ADCN networks
There is a functional effect on the aircraft systems and this will trigger the master caution and is a no go failure
In the event of multiple AFDX switch losses in one of the ADCN networks
There will be no function effect on systems but this a no go failure
On modern transport aircraft incorporating IMA system the ATC
Will have software application which is hosted on a hosting module such as a CPIOM or a GPM
On modern transport aircraft incorporating IMA system the avionics communications router allows the flight crew to establish communication with the ground via
The VHF and HF radions and SATCOM
On modern transport aircraft incorporating IMA system the circuit breaker monitoring
Is carried out by a software application hosted on the same module as the other energy applications
On modern transport aircraft incorporating IMA system the electrical load management avionics application will be hosted on
The same module as the other energy applications
On modern transport aircraft incorporating IMA system the electrical system BITE is carried out by
A software application hosted on the same module as the other electrical load management applications
On modern transport aircraft incorporating IMA system the fuel management control is performed by a software application and hosted by the
CPIOM dedicated to fuel manament functions
On modern transport aircraft incorporating IMA system the brake temp management is hosted on a modular computer which also hosts the software applications for
Steering control landing gear extension and retraction tyre pressure indication oleo pressure indication and braking control
On modern transport aircraft incorporating IMA system the braking control is hosted on a modular computer which also hosts the software applications for the
Steering control landing gear extension and retraction tyre pressure indication oleo pressure indication and braking control
On modern transport aircraft incorporating IMA system the software application for the landing gear extension and retraction is hosted on a modular computer which
Steering control landing gear extension and retraction tyre pressure indication oleo pressure indication and braking control
On modern transport aircraft incorporating IMA system the software application for the oleo pressure indicaton is hosted on a modular computer which also hosts the software applications for
Steering control landing gear extension and retraction tyre pressure indication oleo pressure indication and braking control
On modern transport aircraft incorporating IMA system the software application for the steering control is hosted on a modular computer which also hosts the software applications for
Steering control landing gear extension and retraction tyre pressure indication oleo pressure indication and braking control
On modern transport aircraft incorporating IMA system the software for the tyre pressure indication is hosted on a modular computer system which also hosts the software applications for
Steering control landing gear extension and retraction tyre pressure indication oleo pressure indication and braking control
On modern transport aircraft incorporating IMA system the software applications for the air ventilation and control functions
Hosted on a shared hosting module along with one or more other ata 21 system software applications
On modern transport aircraft incorporating IMA system the software applications for the avionics and cockpit ventilation control functions will be
Hosted on a shared hosting module along with one or more other ventilation system software applications
On modern transport aircraft incorporating IMA system the software applications for the bleed management functions will be
Hosted on a shared hosting module with one or more other system software applications
On modern transport aircraft incorporating IMA system the temp control
Software application will be hosted on a shared hosting module along with one or more other ventilation system software applications
On a integrated control panel which uses a controller area network bus such as a cockpit overhead control panel the can controller is
Integral with the panel
Reliability of data transfer via AFDX switches Ethernet is guaranteed by the use of
Dual redundant channels
The ADCN suffers from multiple switch losses
This might effect the system depending on which switches have failed
The common remote data concentrators
Collect conver and exchange data between the ADCN and LRUs that do not have AFDX technology
The defined standard for deterministic data transfers in a network for safety critical IMA applications is
ARINC 664
The mirror IOM principle ensures
A malfunction of any single IOM does not cause loss of transmitted data
The purpose of an IOM is to
Convert the aircraft system data sent and received by LRUs directly connected to them from non AFDX into AFDX format and vice versa
The technology used in an IMA system to provide the necessary standard of ADCN is called
AFDX
The various CPIOMs used in an IMA system differs in respect to their
Input output cards only
What software in a CPIOM is field loadable
Module software (core and config table software) and avionics applications
What system is best suited to IMA application
Fly by wire
