The direction test that kept the wind out was applied to staying in as
well, and there it was wrong. Its unit is a four-degree step, which is
four seconds of travel at a degree a second — far longer than the 1600 ms
settle window — so between two accepted steps nothing said the mast was
still turning, the timer expired, and Stop went dark and lit again the
whole way round.
Entry stays strict: two consecutive steps of four degrees the same way,
which is what weather cannot produce. Staying in is now sensitive
instead — any continued progress in the direction already established
re-arms the timer, down to a single degree, because one degree the same
way is not a gust when the rotor is demonstrably under power. That
demonstration is exactly what the strict entry provides, so the loose
exit costs nothing: wind still cannot start it, and once stopped the
sensitive path is disarmed with the direction.
The settle window goes to 3000 ms so it outlasts one degree of progress
on a slow mast rather than four degrees on a fast one. Measuring
progress needs the PREVIOUS reading, which movementReferenceRef is not:
it deliberately holds still through sub-threshold steps so they can
accumulate into one.
rouggy
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