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by n_ermosh 685 days ago
yes I should have mentioned actuators as well. the actuators are internally redundant in terms of computation and power and will fail silent and not move if they disagree. Then, each control axis has 2 sets of these servos.

I say axis, rather than control surface, because for something like ailerons, we can have one go neutral in a fault case and the aileron on the other wing still operates with some reduced control authority. So even though each aileron has one servo, the roll axis has 2 and it maintains redundancy