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BA 744 Wings Flexing...WOW!  
User currently offlineUal747 From , joined Dec 1969, posts, RR:
Posted (12 years 7 months 2 weeks 1 day 13 hours ago) and read 3041 times:

Man, you guys take a look at the flex on these puppies. Talk about bending some metal. I haven't ever seen wings flex like this. Not even on the 777.


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Photo © Chris Sheldon



UAL747

40 replies: All unread, showing first 25:
 
User currently offlineVafi88 From United States of America, joined Apr 2001, 3116 posts, RR: 17
Reply 1, posted (12 years 7 months 2 weeks 1 day 12 hours ago) and read 2489 times:

WOW!  Wow!


I'd like to elect a president that has a Higher IQ than a retarted ant.
User currently offlineDa man From United States of America, joined Sep 2001, 887 posts, RR: 12
Reply 2, posted (12 years 7 months 2 weeks 1 day 11 hours ago) and read 2397 times:

WOW! I wonder how much more bend before the wings would snap off is alloted for in the design of the B744?


War Eagle!
User currently offlineMr.BA From Singapore, joined Sep 2000, 3423 posts, RR: 22
Reply 3, posted (12 years 7 months 2 weeks 1 day 11 hours ago) and read 2352 times:

I would be interested to know how much more can the B744 wings bend too before they break off... anyone?

Nice pic Chris  Smile

alvin

The B747 ruleszz~



Boeing747 万岁!
User currently offlinePilot1113 From United States of America, joined Aug 1999, 2333 posts, RR: 11
Reply 4, posted (12 years 7 months 2 weeks 1 day 11 hours ago) and read 2321 times:

I believe that the 777 wings flexed 26 feet above the zero line.

In translation, they flexed up and over the plane before they snapped... exactly how the Boeing engineers designed them.

The 747 shouldn't be that different, meaning that the wings should flex a heck of a lot more than what's in the picture!

- Neil Harrsion


User currently offlineCcrlR From United States of America, joined Aug 2001, 2235 posts, RR: 0
Reply 5, posted (12 years 7 months 2 weeks 1 day 11 hours ago) and read 2298 times:
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there are a lot of pictures on here I seen that did that.
767-400
747-400
777-200
A340-300

But I just have to say just like everyone else WOW!!!!!!  Wow!  Wow!  Wow!  Wow!



"He was right, it is a screaming metal deathtrap!"-Cosmo (from the Fairly Oddparents)
User currently offlineAWspicious From , joined Dec 1969, posts, RR:
Reply 6, posted (12 years 7 months 2 weeks 1 day 11 hours ago) and read 2261 times:

I'd like to know if someone here can explain what is the cause of this, please.

User currently offlineSkyguy11 From , joined Dec 1969, posts, RR:
Reply 7, posted (12 years 7 months 2 weeks 1 day 11 hours ago) and read 2253 times:

Proof of how friggin strong those planes are  Smile

User currently offlineVapourTrails From Australia, joined Aug 2001, 1152 posts, RR: 1
Reply 8, posted (12 years 7 months 2 weeks 1 day 10 hours ago) and read 2265 times:
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http://www.airliners.net/discussions/tech_ops/read.main/14467/4/
http://www.airliners.net/discussions/tech_ops/read.main/21368/4/

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Photo © Konstantin von Wedelstaedt




"Oh, I have slipped the surly bonds of earth, and danced the skies on laughter-silvered wings.." John Gillespie Magee Jr
User currently offlineRussianplnelvr From United States of America, joined Sep 2001, 228 posts, RR: 0
Reply 9, posted (12 years 7 months 2 weeks 1 day 10 hours ago) and read 2184 times:


The wings on the 747-400 can bend up to 29 feet.


User currently offlineSpacecadet From United States of America, joined Sep 2001, 3624 posts, RR: 12
Reply 10, posted (12 years 7 months 2 weeks 1 day 7 hours ago) and read 2087 times:

AWspicious: the cause is high G-forces; what else? The fuselage is being pulled down and the wings are trying to pull up. Why these planes got into these particular situations is anyone's guess; turbulence, control yoke inputs, etc. But the cause of the flex itself is high G-force.

I personally hate that "sinking" sensation you sometimes get in a plane, especially near the ground (I guess it's a form of turbulence); you often get wing flex in cases like that as the airflow over the wings first drops a bit and then recovers. But there have been very, very few accidents I can think of where high dynamic loads under normal circumstances (ie. not actually caused by some other event such as lightning strike or a bomb) actually snapped the wings off a plane. Maybe 2 or 3 times in the past 30 years. Those wings are extremely strong if maintained properly.



I'm tired of being a wanna-be league bowler. I wanna be a league bowler!
User currently offlineIkarus From United Kingdom, joined Jan 2001, 3524 posts, RR: 2
Reply 11, posted (12 years 7 months 2 weeks 1 day 4 hours ago) and read 2003 times:

Spacecadet: I disagree - strongly. The planes in the pictures in this thread are not in any particularly high G-force situation. This is the normal wingloading: The fuselage has most of the weight, and the wings provide almost all of the lift. Hence the wings bend up under the load of the fuselage. I agree that the pictures are very good, but not very spectacular or unique on the amount of wing bending. They depict normal operations of 744s.

Regards

Ikarus


User currently offlineJaseWGTN From New Zealand, joined Mar 2000, 823 posts, RR: 1
Reply 12, posted (12 years 7 months 2 weeks 1 day 3 hours ago) and read 1971 times:

Is it me, or does the top BA photo look like a model on a blue background?!?!?

User currently offlineJoge From Finland, joined Feb 2000, 1444 posts, RR: 39
Reply 13, posted (12 years 7 months 2 weeks 1 day 3 hours ago) and read 1965 times:

Here you go (not as bad as in the 747):


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Photo © Jorgos Tsambikakis



-Joge



Bula!
User currently offlineB747-4U3 From United Kingdom, joined Jan 2002, 990 posts, RR: 0
Reply 14, posted (12 years 7 months 2 weeks 1 day ago) and read 1904 times:

Jase, I agree with you, the first one does look as though it is a model. Nevertheless, it is a great photo.

User currently offlineSwa tpa From United States of America, joined Aug 2001, 1559 posts, RR: 34
Reply 15, posted (12 years 7 months 2 weeks 22 hours ago) and read 1840 times:

I thought it looked like a model too. Where is the rotating beacon? The sky is to uniformly blue. Something just doesnt look right.


I believe I can fly.....
User currently offlineIkarus From United Kingdom, joined Jan 2001, 3524 posts, RR: 2
Reply 16, posted (12 years 7 months 2 weeks 22 hours ago) and read 1823 times:

Hehehehehee. Whenever a photo is "too good to be true" some ..... individuals ... have to take it literally and hint that it might be fake - even if it is from one of the best and most well-known photographers of the site...

Funny.

Regards

Ikarus


User currently offlineDa fwog From United Kingdom, joined Aug 1999, 867 posts, RR: 8
Reply 17, posted (12 years 7 months 2 weeks 16 hours ago) and read 1719 times:

Too good to be true? Hm. I picked that shot as the best from a sequence of 19 (!) I also considered masking the aircraft and using a little noise reduction on the sky, but decided against it as it looked too artificial. If you're really dubious, I could post a pic from earlier or later in the sequence....(which would doubtless be rejected as a dupe!)

Actually, I'm just trying to imaging what a nightmare it would be to photograph a model to look like that. For a start, how would I get the wings to flex like that? (the subject of this thread, after all!)

For those who are interested in the wing bending rather than the authenticity of the pic, the 747 was in a lefthand turn at the time. This obviously adds a component of centifugal force to the weight of the aircraft, thereby increasing the load on the wings and increasing the amount of flex.

Chris.


User currently offlineB747forlife From United States of America, joined Nov 2001, 392 posts, RR: 3
Reply 18, posted (12 years 7 months 2 weeks 16 hours ago) and read 1695 times:

That's unnatural!

-Nick


User currently offlineATA L1011 From United States of America, joined Feb 2001, 1383 posts, RR: 6
Reply 19, posted (12 years 7 months 2 weeks 16 hours ago) and read 1681 times:

Lots of pix of 747-400s,777's,767's and A330/40's with their wings flexing at various points. The alloys they use on the wings alloy this


Treat others as you expect to be treated!
User currently offlineJet-a gasguy From United States of America, joined Dec 2000, 266 posts, RR: 1
Reply 20, posted (12 years 7 months 2 weeks 15 hours ago) and read 1649 times:

Another factor to consider, is that when there is a big cabin load and not much fuel, the wing bending moments increase dramatically. Could be the case in this photo.

just my 2 cents....

Jet-A gasguy



Find a job you love, and you'll never work a day in your life.
User currently offlineVoodoo From Niue, joined Mar 2001, 2074 posts, RR: 0
Reply 21, posted (12 years 7 months 2 weeks 15 hours ago) and read 1647 times:

To those `model enthusiasts' who somehow doubt the BA 744 shot...I can easily vouch for Chris that that sight of a fully-laden 744 making a left turn against a sky like that is not uncommon at Heathrow, especially on a cold but sunny winter's day.


` Yeaah! Baade 152! Trabi of the Sky! '
User currently offlineSwa tpa From United States of America, joined Aug 2001, 1559 posts, RR: 34
Reply 22, posted (12 years 7 months 2 weeks 14 hours ago) and read 1640 times:

Ok then. BEAUTIFUL picture. I am only jealous that mine never come out that good  Smile
Not to mention I wish TPA had 747's to try with. I guess it would be rather hard to make a model with leading edges down and wing flexed!
Thats a compliment when your pic is so darn good people think its fake  Wow!



I believe I can fly.....
User currently offlineEGGD From United Kingdom, joined Feb 2001, 12443 posts, RR: 35
Reply 23, posted (12 years 7 months 2 weeks 14 hours ago) and read 1607 times:

Jason Taperell is da masta...


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Photo © Jason Taperell




Click for large version
Click here for full size photo!

Photo © Jason Taperell




Click for large version
Click here for full size photo!

Photo © Jason Taperell



Regards

Dan Big grin


User currently offlineZebfly2 From United States of America, joined Aug 2001, 417 posts, RR: 1
Reply 24, posted (12 years 7 months 2 weeks 11 hours ago) and read 1540 times:

Shame on those of you who think Chris' photo isn't real. Obviously you are not used to seeing a fully loaded 747-400 take off. Whenever I go back to my hometown of NYC, I make it a point to go to Rockaway Beach(near JFK) in the late mornings just to watch Asia bound 747's(NW,JAL,ANA,KOREAN,& UA) t/o. The flex on the wings is an amazing sight. The flex on a fully loaded A340 isn't too shabby either. Keep up the good work Chris! Big thumbs up


Educate your children before others mis-educate them!!!
25 Mr.BA : Yeah I agree. If you have a chance, look carefully at a fully loaded B747-400 rotate, the wings really flex a lot more than usual! alvin
26 Post contains images ZK-NBT : Great photo!!! Great Plane!!! I always love watching fully loaded 747's take off it's really a beautiful sight!
27 Ganymed : I agree the BA 744 looks spectacular from that angle but as many posters have stated here it's just sort of natural (high aspect ratio wings + huge sp
28 Vs744 : It looks even stranger when your inside one. I noticed this on a VS 744 last year. When we were on te ground, I could clearly see the winglet, however
29 Post contains links and images Da fwog : Well, the difference between on the ground and in the air is made even greater by the fuel in the wings. When fully fuelled, the wings of a 747 on the
30 Shroom952 : When I lived in Houston(IAH) I went on a trip to London Gatwick...and I flew British Airway's 744. It was a non-stop flight so it was pretty fueled up
31 Post contains links and images BA777 : Check this one out then Click for large versionPhoto © Jason Taperell BA777
32 Post contains links and images KingWide : A head-on shot better illustrating [IMHO] what Chris is talking about with the convex curve of the wings when fully fuelled. Click for large versionPh
33 EGGD : ........plugathon
34 Mr.BA : One interesting information for those who are not aware of this. Just thought of sharing it with you. An empty B747-400 wing has a wingspan of 64.4m b
35 Red Panda : For those who wanna know about wing-flexibility diff. btwn 747 and 777: 777 has much more flex wings than 747. b777 wings are made of more flexible, 1
36 Ual747 : Not to mention that this flexing is greatly enhanced by the 777's greatly upward swept wings. It's an awesome sight and more pronounced if you are sit
37 Post contains links and images LouisChenevert : Click for large versionPhoto © Andrew Hunt
38 Post contains links and images Baec777 : Boeing 777s has them flex wings too... MS777(Egypt Air)Click for large versionPhoto © Chris Sheldon NG777(Lauda Air)Click for large versionPhoto
39 Post contains links and images BA777 : So do 767's Click for large versionPhoto © Paul Dopson BA777
40 Standby87 : Yep, the flex on 744s is impressive. When BA introduced them in '89, I was sat about Row 43/44 on my first flight and was amazed to watch the wing-tip
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