HN39;
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Here, I'm not sure about the notion of "quasi-simultaneous" - are these calculations truly parallel....
I am not sure if it's helpful... In essence, the calculations are done very, very quickly, a lot quicker than the time relevant for moving a control surface between two distinct consecutive positions - 6 (microsec) to 9 (nanoseconds) order of magnitude. At that calculation speed rate, the calculations would be looking like being done in parallel, even if they were done serially.