PPRuNe Forums - View Single Post - AF 447 Thread No. 9
View Single Post
Old 17th Aug 2012, 06:29
  #1369 (permalink)  
HazelNuts39
 
Join Date: Jul 2009
Location: France - mostly
Age: 84
Posts: 1,682
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by CONF iture
No autotrim means no alternate law no more Nz demand.
Direct, just direct law, where 20% displacement of the sidestick will produce 6 deg up of elevators.
I don't disagree with that. But you miss the point, or you are evading the issue, so we still don't seem to understand each other. Maybe we should leave it at that.

EDIT:: One last try: If the system had been such that in Alt2B from the onset of stall warning the THS setting had been limited between setting at stall warning onset and 2° nose down (i.e. no further uptrim would be applied), but otherwise as is, i.e. Nz law without high-AoA protections, then the elevator trace on FDR would have been as shown by the purple line on the graph up to the point where the elevator reaches 30° at 02:11:41 (101 seconds after 2h10). Up to that point the airplane's trajectory and the stickforce felt by the PF would have been identical to those in the accident.

Last edited by HazelNuts39; 17th Aug 2012 at 09:25.
HazelNuts39 is offline