I’m interested in zdnet’s article’s description of the triple processor redundancy.
It's only when every processor comes up with the same answer that a command is sent to the PowerPC microcontrollers.
Hmm, in the quite likely scenario where one processor becomes permanently defective while the other two continue to work, would not such a strategy always lead to a complete freeze of the command stream, sending the craft hurtling off in entirely the wrong direction?
I’d have thought more likely, as long as two of the processors completely agreed, their command would be accepted while the third would be assumed to be in error, and ignored.
Confession though, of all the various technologies in which I have dabbled, rocket science is not one of them.