PPRuNe Forums - View Single Post - Aircraft Crash in Moscow
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Old 31st Dec 2012, 04:42
  #137 (permalink)  
fdr
 
Join Date: Jun 2001
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It all depends what speed it had when this "long" touch down occurred. Because as the video on YT shows (same aircraft type, same airline) the aircraft carries so much extra speed that it bounces, it floats, doesn't want to "stick" to the pavement so you have the chain affect of speed brakes, brakes and everything else not engaging because of (what effectively was) a poorly executed approach. Makes you wonder if pilots even bothered to compute Vref. Long touchdown by itself may not be out-of-bounds yet but combined with excess energy and it may very well put you outside of the limits.
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really? The aircraft has descended between the two images taken of it, and the later image has a slight negative pitch angle, vs a slight positive pitch in the first image. For a given speed off target, there is a change in body angle required to achieve a given flight path angle... works out at about 1 degree per 5 kts... unless you change the CL/AoA slope by some other means. Works pretty much for any large aircraft, even TU204's. So assuming that the aircraft is still going anywhere near the ground, then they are not greatly over the target speed at all. IMHO. Forgive me, have only been doing flight path reconstruction for 35 years so would humbly bow to your inside knowledge that the crew did not, whatever you are saying... Suggest you wait until the data is recovered before criticising the recently deceased.
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