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Old 16th Nov 2013, 16:18
  #797 (permalink)  
RetiredF4
 
Join Date: Jun 2009
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A330 AOA Vanes
Chris Scott
His key word is "trigonometry". Think about it. Compare the pitch attitude of the aircraft, and therefore the pitots, with its steeply-downward trajectory. Haven't got time to check the figures right now, but, although the vertical component of its trajectory is (say) 10,800ft/min (180ft/s, or just over 100kts TAS), the pitot tube is at more than 90 degrees to that.
What's the point there? In the worst case The AOA vane would be stuck at the maximum AOA (design value). Who cares if that is 30 or 60 degrees, it would be stalled anyway. That is at least true as long as the jet is not stalled inverted.
Or do we have any evidence, that the vane would reverse its travel against the airflow?

If the trigonometry concern is for the pitots, then it may be again fair to ask, why besides the AoA a speed indication is needed to determin wether you are in a full stall.

Last edited by RetiredF4; 16th Nov 2013 at 22:11.
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