Bagram airfield crash

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green1

Über Member
I don't remember seeing that on the news. Was it censured because it was military?
It was on the BBC news page.
http://www.bbc.co.uk/news/world-asia-22347199
 
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Cycling Dan

Cycling Dan

Cycle Crazy
Choppers, humvees and bikes aren't really that heavy. It would take something pretty heavy breaking loose to knock the CoG back like that.
Not at all. A hmvw weights about 2+ tons. More than enough to knock the centre of gravity off enough. In addition to this the plane will be trimmed to push the nose up at low speed. So not good at all. I doubt weather played any part.
 

green1

Über Member
What lol. Of course there will be
Not necessarily, Military aircraft don't have to have black boxes although they generally do.
Not at all. A hmvw weights about 2+ tons. More than enough to knock the centre of gravity off enough. In addition to this the plane will be trimmed to push the nose up at low speed. So not good at all. I doubt weather played any part.
2~3 tons wouldn't be enough to knock it out of limits. It wouldn't be full of fuel as it was only flying to Dubai. As it rotated there would have been more weight than that moving backwards in the fuel tanks.
 
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Cycling Dan

Cycling Dan

Cycle Crazy
Not necessarily, Military aircraft don't have to have black boxes although they generally do.

2~3 tons wouldn't be enough to knock it out of limits. It wouldn't be full of fuel as it was only flying to Dubai. As it rotated there would have been more weight than that moving backwards in the fuel tanks.
Yes but that 2 tons could come from the front added to everything moving back to some degree could be enough. All it has to do is push the nose up enough for the speed to drop love enough then the elevators become pointless. Then as you seen it stalls. Remeber. is all the fuel and the extra weight going to the back not just either or. It may not be fully fuelled but maybe fully loaded
 

Globalti

Legendary Member
It wasn't a military plane, it was a civilian 747 freighter on contract and belonging to National Airlines Cargo. Aircraft loads are carefully balanced, it was taking off steeply for security reasons and a movement of a couple of tons or more would certainly cause a stall.

http://www.nationalaircargo.com/
 
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Cycling Dan

Cycling Dan

Cycle Crazy
That's certainly going to be a pretty harrowing cockpit voice recording, if there is one...
Flight recorder(blackbox) would survive that no issue. It will be normal on take off
1:80Knots
2:V1
3: Rotate
4: V2
Then at this point when you would normally say positivte rate of climb i suspect they would notice the problem- supported by the fact the gear was not retracted
I assume the pitch would have gone above 15 degree when they start to question whats going on. Plane stalls- Attempts of desperation to recover from the stall with i suspect panic from the possible others on the flight deck. With the Captain who would have taken control possibly not making any sound in an attempt to regain control. . Although they may have thought they could save it where it would no doubt remain professional until the last moments where it would be the flight crew coordinating to try and save the aircraft.. 1200Ft and a 747 stalling, your going to hit the ground. To recover from a stall you nose dive and full throttle to regain speed then pull back up. For a 747 I would say no less than 5000ft is needed. Either way I doubt it would be nice.

It will probably be released after the investigation like most are since it would become publicly released
 

colly

Re member eR
Location
Leeds
Not necessarily, Military aircraft don't have to have black boxes although they generally do.

2~3 tons wouldn't be enough to knock it out of limits. It wouldn't be full of fuel as it was only flying to Dubai. As it rotated there would have been more weight than that moving backwards in the fuel tanks.
Not sure about this but do not tanks in aircraft wings have baffles to prevent unwanted and unexpected movement of fuel ?
 
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Cycling Dan

Cycling Dan

Cycle Crazy
[QUOTE 2434095, member: 76"]MaybeTommy the Taliban ground handler had tied a bit a rope around the tail plane, then when it took off the rope pulled tight and made the back dip inducing the stall. Or maybe some really strong fishing line, that wouldn't show on the camera from that distance.

Cycling Dans proposition about their attempts to save it could be accurate. Although possibly they were all out of the cockpit and filling in the loadmaster for being so naffing uselss?[/quote]
You can see from the footage the pilot banks the aircraft which makes it slip into a dive. This is the pilot trying to save the aircraft. During a stall elevators become useless as there is very little airflow over them. Although in this case it was a deep stall so 0 airflow over the evelators as the wings would block the airflow. The pilot levels the plane out but the sink rate is too great and hits the ground. They sure as hell give it a go. Once it stalled it was game over.
 
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