Choose the right answer
Military avionics are a unique system that accounts for up to 50% of the aircrafts cost
Military avionics are a collection of subsystems that account for up to 50% of the aircrafts cost
Avionics stands for Aerial Visual Electronics
None of the Above
As avionics have been further developed…
A. Hard boundaries have turned to soft boundaries
B. Systems are kept as isolated as possible to avoid chain reactions
C. Cost has increased throughout the years
D. A and C are correct
Choose the wrong one
Avionics architecture is a description of everything related to avionics
Analogue architecture used buses
Analogue architecture units where hardwired
All of the above
A data bus is..
A subsystem that interconnects devices
A subsystem that needs algorithmic rules and protocols
Could be compared to a human nervous system
Data buses could be classified as…
Serial or parallel
Poli and mono source
Precedent and primary
Primary and secondary
Possible number of sources regarding buses are
Single source (point to point)
Single source (full duplex
Multiple source (half duplex)
None of the above
Select the correct anwer
Communication protocols where only part of analogue architectures and no longer play a role regarding data buses
Bus Architecture describes how the various system elements are interconnected and organized
LRU stands for Liquid Ram Units
A CPU is usually not part of the elements that comprise a bus data system
Simple bus principles can be
Synchronous or asynchronous
A limitations is that data can only be exchanged between two devices
Both are correct
None of the above are correct
About type of buses (choose the correct answer):
The ARINC (Aeronautical Radio INCorporation) is widely used in civil aircraft and supports multiple-redundant operation with dual-redundant operation wich allows physical separation of data buses.
The MIL-STD-1553B is widely used in military aircraft and it is a command-response system in which transmissions are conducted under control of a single bus controller at any one time.
The strong points of the MIL-STD-1553B are its reliability and sturdiness but it is not well established yet.
All previous answers are correct.
BUS (select the correct answer):
1. Is an electrical system which transports the energy from the electrical pumps to the electrical driven systems as informatic data.
2. Is a subsystem that permits interconnection and data exchange between the devices in a complex system.
3. Its basic components are wires, Information Packing Equipment and rules (algorithms and data format).
4. Can be classified as serial (several bits at a time) or parallel (most typical in aircrafts due to length and weight) .
About fibre channel buses topologies
1) Arbitred loop 2) Point to point communication 3) Hubbed loop 4) Switched fabric
1) Switched fabric 2) Hubbed loop 3) Arbitred loop 4) Point to point communication
1) Arbitred loop 2) Point to point communication 3) Switched fabric 4) Hubbed loop
1) Point to point communication 2) Arbitred loop 3) Hubbed loop 4) Switched fabric
Types of avionics architecture:
1) Distributed Analogue 2) Distributed Digital 3) Federal digital 4) Integrated Modular
1) Federal Digital 2) Integrated Modular 3) Distributed digital 4) Distributed Analogue
1) Distributed Digital 2) Integrated Modular 3) Federal digital 4) Distributed Analogue
1) Distributed Digital 2) Distributed Analogue 3) Federal digital 4) Integrated Modular
The MIL-STD-1553B is an example of:
Federated digital architecture
Distributed analogue architecture
Integrated modular architecture
Distributed digital architecture
It is an element of the data buses:
A. LRUs (Line Replaceable Units) or Bus Users
B. Bus Stop / Bus coupler
C. A and B are correct
D. A and B are false
The type of BUS can be classified by the:
A. Number of bits at a time (serial or parallel)
B. Number of sources and sinks (single surce – single sink, single source – multiple sink or multiple source – multiple sink)
C. Number of wires depending on the same Information Packing Equipment (single or dual
D. A and B are correct
About JIAWG (Joint Integrated Avionics Working Group:
A. Is a development of modular integrated architecture implemented in the F22
B. Does not have data buses for cabinet interfaces
C. Has Common Integrated Processor (CIP)