Wing flex

[airboatr]

http://www.youtube.com/watch?v=44-1Aegw ... re=related

I don't think I'd seen this one before... amazing how the wings of a 747 can do this

[DanKH]

hm... I must say that I can't really see anything "Extreme" about this nicely performed crab-landing.... nor any particular extreme flexing of the wings....

Take a look at this one....THAT is wing flex: 777 wing test

[Garry Russell]

Looks quite normal to me too

I sat in a BEA Viscount on aproach to LHR in bumpy conditions.

Being seated beside the wing and with the huge windows I could clearly see the other wing as well.

They were flapping like a seagull, but pehaps it's just as well they bend so much else they'd break...infact I think it was the fuse bouncing up and down.....felt like it.

I see a lot of extreme landing videos that are quite normal.

The crabbing looks more extreme in telephoto compression but crabing to a greater or lesser extent is how it often is.

Garry

[DispatchDragon]

Old quote from Uncle Roger
Boeing Bod speaking on wing deflection on the B707-320
"The wingtip vertical movement in flight is 34.6 inches either above or below normal dihedral."

Self Loading Cargo -- "oh yes and what happens at 34.7 inches??"

me - "There will be a loud ripping noise , this will be me pulling my window blind down"

It was funnier when Uncle Roger told it - some where in 1965 I believe

Leif

[Garry Russell]

I can just imagine him comming up with that

Garry

[airboatr]

your all old and blind..
comon right before he touches down .........the left wing
in fact the wing flex seams to create loss of lift (yes ther's a better way to say it)
....the aileron pops up .............

:roll:

PS . yep saw that Video Dan, it's from a number of years ago

anyways I think that youtubes compression of the video robs
from the flopping motion going on.

not to mention the other kinda flap going on , eh?

[Garry Russell]

Not missed it Joe

Can see the flex clearly

Whay I'm saying is it's not unusual.....

Garry

[airboatr]

not unusual.....

Garry

exactly Garry , and that just one landing

[petermcleland]

I remember sitting in a passenger seat on a B747-400 and I noticed as we taxied out that if I looked across to a window on the other side of the aircraft, I could see the "Tiplet" nicely filling a window over on that side. On take-off as I watched that wing Tiplet, it lifted up out of sight so far that I still couldn't see it when crouching down. It remained out of sight till we landed.

Another remembrance of "Flex" comes from my Merchantman days...If you had the crew door to the cabin open in the cruise and looked back, through the door from the flightdeck, down the length of the fuselage and then wacked on some aileron...You could see the centre section of the fuselage start to roll, twisting the fuselage in the middle and then the front and back halves of the aeroplane "sprung round" to catch up...Boooiiiinnngg!!! :flying:

[airboatr]

Boooiiiinnngg



well being the novice I am I think I'd be begging you to Stop! :o

don't break the plane....... don't break the plane

:doho:

They are amazing feats of engineering