Web & Social Media Analytics Previous Year Question Paper.pdf
650a9c8e23d3f_ppt (1).pptx
1. 1
AVIONICS AND INSTRUMENTATION
Prepared by
Mr G Shiva Krishna
Assistant professor
Department of Aeronautical Engineering
shivakrishna0206@gmail.com
g.shivakrishna@iare.ac.in
Phone No 8121272839
INSTITUTE OF AERONAUTICAL ENGINEERING
(Autonomous)
2. Contents to study
Evolution of electronics
The nature of microelectronic devices,
processors, memory devices,
Introduction to avionics, systems integration,
need - data bus systems, MIL STD 1553 bus system,
ARINC 429/ARINC 629 bus systems,
optical data bus systems; Integrated modular avionics architectures ,
commercial off the shelf systems;
Avionics packaging.
2
Module 1 AVIONICS TECHNOLOGY
3. • The first major impetus for the use of electronics in aviation occurred during
World War II.
• Communications were maturing and the development of airborne radar
using the
• magnetron and associated technology occurred at a furious pace
throughout the conflict
• Transistors followed in the late 1950s and 1960s and supplanted thermionic
valves for many applications.
• The improved cost effectiveness of transistors led to the
development of digital aircraft systems throughout the 1960s and 1970s,
• initially inmilitary combat aircraft where it was used for Nav/Attack systems
3
Evolution of electronics
4. • For many years the application of electronics to airborne systems was
limited to
• analogue devices and systems, with signal levels and voltages generally
being related in some linear or predictive way. This type of system was
generally prone to heat soak,
• drift, and other non-linearities. The principles of digital computing had been
understood for a number of years before the techniques were applied to
aircraft. The development of thermionic valves (or vacuum tubes) enabled
digital computing to be accomplished,
• but at the expense of vast amounts of hardware. During World War II a
code-breaking machine called Colossus employed thermionic valves on a
large scale. The machine was physically enormous and quite impracticable
for use in any airborne application.
4
Evolution of electronics
