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Remind me of the Ariane 5 maiden flight: redundant hardwares does not protect against unsanitized inputs. I don't know much about the design of the airbuses, bu
by sinuhe69 5y ago
Remind me of the Ariane 5 maiden flight: redundant hardwares does not protect against unsanitized inputs.
I don't know much about the design of the airbuses, but I think it's sensible to specify the last primary computer running in a different mode as the first two, simply because double hardware failure is very very unlikely. So it boils down to either software bug and or unsanitized inputs. Assuming that, the last computer should provide some basic but safe functions.
- strictfp 5y agoI've seen bad user input, one very unusual char, bring down a whole self-healing geographically redundant cluster of machines running an expensive commercial cluster software. Any connected devices can bring each other down.
- andrewnicolalde 5y agoThat sounds like a great war story if you’re open to telling it :)
- salawat 5y agoStory, story, story, story!
- avianlyric 5y agoWell that’s kind of what happened. The primary flight computers all failed, to the plane fell back to “direct law”, which means pilot input is directly transmitted to control systems without a computer attempting to interpret intent or protect against pilot error. As a consequence a lot of the more advanced functions became disabled because they rely on the primary flight computer to indicate when it’s safe for them to operate. Presumably because accidental operation of those features in flight is extremely dangerous.