Wing Flex - How Much From Ground Position?

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UAL747
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Wing Flex - How Much From Ground Position?

Tue Jun 12, 2007 7:18 am

I was just wondering if any of you could give me figures as to how much (in feet, meters) does a wing typically flex upward on:

777
A340
747
A330
A380

????

I haven't been able to find anything about it, but I know that these larger widebody airliners with longer wings flex upward quite a bit during flight.

Thanks,

UAL
"Bangkok Tower, United 890 Heavy. Bangkok Tower, United 890 Heavy.....Okay, fine, we'll just turn 190 and Visual Our Way
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UAL747
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RE: Wing Flex - How Much From Ground Position?

Tue Jun 12, 2007 7:54 am

Edit:

Was wondering what the measurements were from the tip of the wing.

UAL
"Bangkok Tower, United 890 Heavy. Bangkok Tower, United 890 Heavy.....Okay, fine, we'll just turn 190 and Visual Our Way
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411A
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RE: Wing Flex - How Much From Ground Position?

Tue Jun 12, 2007 10:15 am

Don't know about the airplanes you asked about, but the B707 had a total wing flex at the tip of twenty feet (10 up, 10 down) before permanent deformation was noticed.

Looking back further in time, the DC-6B had a wing flex of 12 feet, 6 up/down.
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lehpron
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RE: Wing Flex - How Much From Ground Position?

Tue Jun 12, 2007 10:55 am

B-52 bomber's had a 18-foot wingtip rise. I heard, though I'd like others to confirm, that either the 777 had a 6-meter tip rise or the A380 had a 7-meter tip rise.
The meaning of life is curiosity; we were put on this planet to explore opportunities.
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UAL747
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RE: Wing Flex - How Much From Ground Position?

Tue Jun 12, 2007 10:55 am

I think you might be thinking of MAX wing loading tests.

I'm just wondering what it is typically during normal flight, not to the point of breaking, or being damaged.

UAL

[Edited 2007-06-12 03:56:45]
"Bangkok Tower, United 890 Heavy. Bangkok Tower, United 890 Heavy.....Okay, fine, we'll just turn 190 and Visual Our Way
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UAL747
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RE: Wing Flex - How Much From Ground Position?

Tue Jun 12, 2007 10:58 am

Quoting Lehpron (Reply 3):
B-52 bomber's had a 18-foot wingtip rise. I heard, though I'd like others to confirm, that either the 777 had a 6-meter tip rise or the A380 had a 7-meter tip rise.

For the Airbus A380, I was sort of disappointed in the flexing of its wings. I thought those huge things would flex way up, but alas, not the case.

UAL
"Bangkok Tower, United 890 Heavy. Bangkok Tower, United 890 Heavy.....Okay, fine, we'll just turn 190 and Visual Our Way
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Starlionblue
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RE: Wing Flex - How Much From Ground Position?

Tue Jun 12, 2007 11:20 am

I do believe the 777 can flex 7 meters upwards before snapping.

In normal operation you would probably see a meter or so. Guesstimatin.


The 380 wings flex quite a bit. When it takes off, the wingtips probably rise 2-3 meters at least from the "full of fuel standing still" position.
"There are no stupid questions, but there are a lot of inquisitive idiots." - John Ringo
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Vimanav
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RE: Wing Flex - How Much From Ground Position?

Tue Jun 12, 2007 6:28 pm

For the B747 its 24ft up and 12 ft down.

rgds//Vimanav
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