PPRuNe Forums - View Single Post - How safe is (airbus) fly by wire? Airbus A330/340 and A320 family emergency AD
Old 1st Jan 2013, 18:56
  #137 (permalink)  
RetiredF4
 
Join Date: Jun 2009
Location: Germany
Age: 71
Posts: 776
Received 3 Likes on 1 Post
DozyWannabe

The subject we were discussing at the time was not AF447, it was how the aircraft behaves on approach when there is a need to go around.
i´m well aware of that

DozyWannabe "Stable flightpath" pitch command or no, if you have positive pitch and select TOGA then the aircraft will climb.
The need to go around might as well be a situation, were airspeed and / or AOA is critical, stall is imminent or already present, were protections are not available for some reason. And then it might not work that way if not in normal law.

And to be even more nitpicking, if a go around at slow speed is performed a initial pitch of 1 degree, which per definition is a positive pitch, will not lead to a climb in an FBW airbus in normal Law. You have to have at least a pitch, which assures a positive climb rate. I think it is important, because your answer in response to the question Bengerman is therefore quite unprecise and misleading. The connection to AF447 is, because they have been mislead by a similar wrong assumption.
RetiredF4 is offline