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Old 19th Sep 2008, 07:19
  #1856 (permalink)  
XPMorten
 
Join Date: Jan 2005
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A. My question to you is do you if you find strange or not that at such FD angle the plane didn't bounced of the ground?
To bounce off the ground, the wing Lift has to be close to the acf Weight.
(or the gear needs a high spring constant). None of these were the case here.

slats or not slats an airplane accelerate at the same rate therefore could you esplain why those poor guys rotated the plane so late if there where no speed /acceleration problem. That Pull Up was estreeme and desperate, do agree on this?
My interpretation the information given;

They did not rotate late, according to the FDR/CVR they rotated at the correct Vr.
Having no slats/flap, the acf was not able to lift off, so they continued
the TO roll (in a pitch) for about 10 sec and gained enough speed to lift off.
Chord dominated ground effect helped them lift off, but this effect will disappear of around 20' AGL on the MD80. Also there will be an increase in induced drag (span dominated). So, after about 4 sec, the acf entered a stall. The rest is in the video.

XPM
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