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Chapter 1: Avionics system (Development of solid state and digital…
Chapter 1: Avionics system
Examples
Central air data computers
E.g Aeronautical Radio Incorporated system (ARINC),
ARINC standards
Communications are done through
data buses
or
communication lines
To ensure conformity and reliability, there must be
internationally accepted and recognised
transfer formats and standards.
Aircraft computer, sensors, instruments, equipments need to communicate with one another
effectively
and
efficiently
3 Classes
ARINC specifications
ARINC reports
ARINC characteristics
General design standardized through
ARINC 429
32 bits uni-directional transmitters
ARINC 629
32 bits. Multi transmissions, less data busses, lighter and bi-directional data transfer.
Aircraft Communications Addressing and Reporting System (ACARS)
A very high frequency (VHF) digital radio transmission system
Digital data link network system between aircraft and ground stations
Navigation systems
Global postioning system (GPS)
3 Segments
Space segment
User segment
Control segment
FAA requirement on radio:
All
aircraft operating in high traffic areas must be equipped with a
two-way
radio system
Purpose
Enable pilots to complete their mission
safely
and
efficiently
in terms of cost and time
Development of solid state and
digital electrical technology
(Commucation/navigation and control system)
Compact
Light weight
Small
Sophisticated
Reliable