PPRuNe Forums - View Single Post - AF 447 Thread No. 7
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Old 9th Dec 2011, 12:31
  #592 (permalink)  
RetiredF4
 
Join Date: Jun 2009
Location: Germany
Age: 71
Posts: 776
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@ mm43
Excellent work, i hope we see more of it, especially the times when the stall warnings happened.

Hazelnuts
In the two seconds between A/P disconnect and the PF's first control input, the FCS commanded elevator nose-up which returned pitch to almost normal and normal acceleration to approx. 1 g.
I tend to disagree.

At the very moment, when the autopiloit disconnect occurred, we have the following values:

-vertical speed zero with tendency to decrease
-normal acceleration .85 g`s (@mm43, i think your labeling is off by one, the line you labeled 0 should actually be 1 g)
-pitch attitude 0°
-AOA 2.25°

The moment the AP drops out and stick is in neutral , NZ-Law will maintain flightpath / 1 g with reference to the flightpath, the aircraft was in at AP disconnect. (Whatever position intended by the AP before does not matter any more).

That would be a descent under the above recorded parameters.

franzl
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