PPRuNe Forums - View Single Post - AF 447 Thread No. 5
View Single Post
Old 1st Aug 2011, 08:40
  #1202 (permalink)  
DozyWannabe
 
Join Date: Jul 2002
Location: UK
Posts: 3,093
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by jcjeant
What about the movements of elevator and movements of stick ..
Do you see the elevator mimic the stick commands in the 20 - 30 first seconds after AP tell goodbye ?
Yes - quite clearly, although the deflection is clearly less in the earlier part of the graph - the question is, what was their altitude and airspeed in the two phases you highlight - it looks like the system was deflecting the elevators relevant to cruise speed in the first part, and lower airspeed in the second.

@pax2908 below - there'll always be debate over that one. The only difference is that the THS trim would have had to be wound on manually rather than happening automatically, which a lot of people were using as an argument in favour of Direct Law until the report came out, reasoning that the PF would not have wanted that much nose-up deflection. However the CVR now indicates that is precisely what the PF was trying to achieve - the big question now is why.

Last edited by DozyWannabe; 1st Aug 2011 at 09:06.
DozyWannabe is offline