Tojja
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Member Since: March 30, 2010
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siftbotHappy anniversary! Today marks year number 13 since you first became a Sifter and the community is better for having you. Thanks for your contributions!
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zorI'm glad you posted that information from FlightGlobal about the high angle of attack and unusual approach and takeoff angles for Afghanistan. I remember hearing similar things about airports in Iraq. I was thinking that this may prove to be a contributing factor in this terrible crash.
Some educated speculation from FlightGlobal:
"Crews taking off from military bases like Bagram in hostile territory normally plan to climb at the maximum climb angle, to put them at the greatest height above ground level achievable by the time they cross the airfield boundary. This entails a high nose attitude that is maintained for longer than normal, rather than trading climb angle for greater airspeed to make the aircraft easier to handle and safer in the event of an engine failure.
In this film there is no clear visual evidence of a missile travelling toward the aircraft, nor of the explosion or fire that a missile would cause if it were to detonate.
The risks of a maximum angle of climb departure are many. If an engine fails very soon after take-off there is a lower airspeed than normal. Slower speed reduces the rudder authority that keeps the aircraft straight and lowers the margin above stalling speed. In the event of an engine failure it is essential for the crew to push the nose down fast to maintain a safe speed with the lower power output.
Another major risk is that if any cargo is not adequately secured in the hold, the high climb angle will cause the payload to slide backward. This could unbalance the aircraft and cause the nose to pitch up, possibly overwhelming the elevator authority available to the pilots if they attempt to push the nose down."
http://www.flightglobal.com/news/articles/video-flightglobal-expert-analyses-bagram-747-crash-sequence-385338/?cmpid=SOC|FGFG|twitterfeed|Flightglobal
siftbotHappy anniversary! Today marks year number 3 since you first became a Sifter and the community is better for having you. Thanks for your contributions!
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siftbotHappy anniversary! Today marks year number 1 since you first became a Sifter and the community is better for having you. Thanks for your contributions!
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