Chris Johnson, Index
Ariane 5 Case Study
- `Defences in depth' failed...
f) Approx. 0.05 seconds later the active inertial reference system, identical to the back-up
system in hardware and software, failed for the same reason. Since the back-up inertial
system was already inoperative, correct guidance and attitude information could no longer
be obtained and loss of the mission was inevitable.