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Old 28th Feb 2014, 03:52
  #564 (permalink)  
CONF iture
 
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Originally Posted by Dozy
"Optimum conditions" in this case meaning only enough airspeed and time for the systems to stabilise at or as near as possible to 17.5deg AoA. Asseline had neither, largely down to his own decision-making.
To provide performance is to rapidly deliver alpha max whatever the conditions and to do so, a temporary overshoot of alpha max can naturally be part of the process, as demonstrated by the test pilot in the video.
No PERF when the AoA is restricted between 14 and 15 but should target 17.5 deg instead.
Then you'll need to explain what "enough airspeed" has to do as a criteria to properly stabilize at alpha max ... ??

The systems can't defy the laws of physics.
It does not have to defy any laws of physics to stabilize at alpha max ... what a strange concept you have here ...

Airbus promoted the systems as being able to help pilots get themselves out of trouble, and in that respect they do. But by disabling A/THR/Alpha Floor or getting the aircraft so low that Alpha Floor is inhibited, a pilot is going outside of Airbus's recommended operation techniques and will therefore be responsible for the consequences.
We are instructed to use alpha max and to totally rely on the capacity of the system to deliver alpha max when needed. That's how the protected aircraft is able to outperform the non protected one.
That you disable alpha floor has nothing to do with the capacity to deliver alpha max.

Which clearly indicates that his intent *was* to disable Alpha Floor, and it seems he missed it in the event.
Nothing new here ... but he did not miss anything - They just came in too fast, and TOGA was selected before the alpha for an eventual alpha floor activation was reached anyway.

For the rest of your partial translations, sorry, but it is very unclear to me what your points are ... ?
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