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Old 22nd Dec 2013, 10:16
  #155 (permalink)  
Owain Glyndwr
 
Join Date: Jun 2011
Location: West of Offa's dyke
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Hi Hazlenuts

However,(...) there are feedbacks within the AoA protection law aiming at damping the phugoid mode (low frequency mode). The feedbacks are CAS and pitch attitude variations. (...) if A/C speed is decreasing and/or pitch attitude is increasing, pilot's commanded AoA is lowered (...).
OK, I can go along with that. I was bitching that the actual phugoid mode would not have much effect on the short term motion, but I can see that the phase advance damping terms in the control laws might well do so.
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