| Author(s): | John F Hanaway |
| Publisher: | Nasa |
| Date: | 1989 | Format: | Language: | English | ISBN10: | 0000000000 |
a comprehensive fail operational/fail safe concept in
an avionics system.
• It pioneered the development of complex redundancy
management techniques, some of which rival the
expert system approaches emerging today.
• It is the first operational aerospace system to use digital
data bus technology to perform flight-critical
functions.
• It is the first operational system to utilize a high-order
language to develop and produce onboard software.
• It is the first operational aerospace program to make
extensive use of flight software program overlays from
a tape memory to expand the effective size of computer
memory.
• It is the first system to integrate the flight control
function with the rest of the avionics functions.
• It included the first use of digital fly-by-wire technology
in an operational atmospheric flight application.
• It is the first avionics system to use a multifunction
cathode-ray-tube display and crew interface approach.
• It is the first avionics system to provide extensive
operational services to onboard nonavionics systems.
Such pioneering innovations and concepts are remarkable
in that they emerged in a design environment which
would be considered archaic by today's standards. For
instance, the data processing state of the art
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