PPRuNe Forums - View Single Post - AF 447 Thread No. 9
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Old 13th Aug 2012, 17:20
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Lyman
 
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HazelNuts39

Howso? With elevators and THS deflected max NU, plus AoA, what value do you derive? Never mind, I must have had a touch of vertigo.......arse about, apologies.

Dozy:

Quote. "By looking at the DFDR traces, it's evident that the aircraft did not stay nose-high all the way down. What happened was that the nose came down, the speed built up, but the elevator and THS position caused it to pitch back up again - just like a paper dart running out of speed."

Yes, and why did the THS not trim ND?

And. Quote. "The THS went to full-NU as quickly as it did because the PF was still pulling up as the aircraft ran out of the speed at apogee and continued pulling well into the stall. The aircraft only ever did what was demanded of it."

That is just wrong. It spent 43 seconds 'parked' at three degrees NU. It did not trim NU as the climb began and continued. PF's commands were a combination of ND and NU, and some time was spent -1G. So it should have trimmed, what inhibited it?

And Quote: [B]"As many have pointed out, it's because it's what the crew will have been used to on that type for over 99% of their time flying the thing."

I was asking bubbers44 what he thought.

So why carry a 99 into the one percent? Manual should mean manual, not a 'blend'

Last edited by Lyman; 13th Aug 2012 at 17:26.
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