Originally Posted by
roulishollandais
Why to override ? to avoid the ground for instance...
I don't understand how exceeding 67 degrees of bank or pulling into a stall will help you avoid the ground.
Originally Posted by
roulishollandais
I still remember reading Pierre Baud beginning 1988 explaining that the system accepted both SS inputs to be added...
That is supposed to be an abnormal operation though. Normal procedure only has one pilot in active control at any one time, and if necessary this can be enforced through the override switch.
Dozy, you open the difficult problem of the specifications. Has the flight engineer to discuss them ? It is from his responsability to ask and ask and ask : "Do you really want that ? Do you realise that means also that ? aso".
I have it on good authority that the test pilots and engineers (aeronautical, electrical and software) worked together to an almost unprecedented level, and nothing made it into the spec unless all groups had reviewed and signed off on it.
An example was Ariane5 V501 crash
Now that *was* rocket science.
Very different disciplines involved with a very different design brief.