My goodness.. I've not seen so much wing flex in a long time. Soon after take-off the engine furthest away was truly wobbling, lol. However, for all the amazement, have to say that I love it. I always love watching the wing activity on a plane and it makes flying so much more 'real'. Aircraft engineering always fascinates me, starting with the fact that such a huge and heavy metal machine such as the B747 series (my favourite, even more than the A380) can lift off, fly and land so gracefully.
I've watched this video countless times and it remains my favorite takeoff vid. There is clear, visible evidence of several of the physical forces at play during the takeoff and climb-out phases of commercial flight. I think it's a great testament to the engineering that went into the 747-400. Plus the sound is very good. Love it!
Watch closely at 0:52 and 0:57 as the engines start to rise and the wing (also at 0:57) when the plane is holding. The pilot has the brakes on full and the engines at max!. This flight was fully loaded + cargo. You can tell the weight by the bounce that she takes at 1:30 as the wings are starting to flex up and down. They make teh plane jump a bit before the nose even starts to rise. THAT EQUALS A VERY HEAVY LOAD.. Great video and NICE camera work!
this is the best vid n youtube that i have seen to do with 747 takeoffs! Magnificent aircraft performing superiorly well! The camera was well positioned and all! AWESOME! 5 STARS!
Awesome video. Great sound and great view. I love the 747-400. I rode one from Mumbai to Frankfurt the other week and enjoyed every second of the trip.
the flex in those wings in unbelievable! yeah, i know they are designed to bow quite a lot, but........watching this makes me shiver! awesome nonetheless!
Very cool! 5* Can you imagine what a first time flyer would think of that wing flex. They'd think the wing would come of. The wing flex on a A330 is amazing too. I remember flying on Aer Lingus A330 to Malaga
Really flexible wings, looks like they were very heavy with fuel and those engines seemed as if they were going to take off on their own and leave the plane behind. AWESOME!
it is amaizing how the wing doesn't break out there cause it was moving up and down very hard with the engines and nothing happened and those engines are very heavy it is just amaizin what the man has created.
I know wings are supposed to flex but I was stunned at how much the #4 engine wobbles. If that's what she's built to withstand, what a magnificient piece of engineering.
Its insane how strong the wings must be. They bend more than a flacid c*ck. And look at how those heavy engines just bob around like a joggers balls. I LOVE THIS!!
Simply amazing! It seemed like an unusually long time before the Krueger Flaps (and also presumably the trailing-edge flaps, although they weren't visible in the video) were retracted.
Hi! I don't know if there's some videos about, but it's also very impresive the flexing capability of a B-52 bomber wing. An old 50 years (or more?) design, you know. The 52's wings are very high located, and are so flexible that they need supports at its extremes, on ground.
It's used as stability for the aircraft. At the speeds a plane is moving, the wings need to flex in order follow the patterns of the wind and keep the airplane from rolling in level flight. It's a very important part of the structure, because if the wings didn't flex and was fixed, the wind would cause the entire plane to move unpredictably and this would even cause fracture, which we don't want! :P
Excellent demonstration of aeroelasticity in action. Love to see how a well designed wing box system flexes. The quality of the video is very good. My videos look good on my Mac but the quality seems to be degraded when uploaded to RU-vid. What file format do you use and the settings to get the resolution on this video. I convert my AVIs to MP4 format before upload, but the quality looks better on my laptop than on RU-vid. Thanks in advance.
Don't worry about the wing flex. What you should be worried is that if the wings WEREN'T flexing, then you should be scared. Wing flex is the most graceful and beautiful part of commercial flying!
its a beautiful takeoff i have to say. but the way the engines and the wings were shaking you have to admit that it really is scary.a 1000 thoughts will come in your mind that some thing is going to happen any second now. anyways, goodjob & a nice video.
Hi, it's not smoke, it's humidity. When the air is sucked into the engine, it accelerates very rapidly, causing its pressure and thus its temperature to drop dramatically, and this, in turn, causes the moisture the air contains to precipitate and become visible. this normally happens during takeoffs in hot and/or humid environment.
No, I understand that. I was answering the question about what gas was in the jet. Jetfuel is kerosene. But you are correct, that is condensation in the engines. I believe that it occurs when the temperature inside the engine is either cooler or hotter than the temperature outside and it also occurs in moist conditions as you said.
Great vid. Flaps/slats are brought in on 'schedule'. It seems obvious the plane was very heavy as the takeoff roll was long. after the initial climb it was probably accelerating fairly slowly, so it took some time between flap retraction steps. the main flaps would have been retracting during the climb but you can't see them. the Slats are the last to come in.
yeah, maybe he WAS actually talking about the aileron's and then Spoilers kicking in a bit, as the pilot rolls the yoke beyond a certain Degree. true. that's exactly what happens: when a certain "angle" of Roll is input at the control column, the Roll Spoilers ( Boards" as they're also called) pop up a little to Assist the Aileron's in effecting the Turn. What I was referring to, or thought he might have been talking about, were those LED's extended off the Leading Edge's. cool.
They are designed to bend more than that due to turbulence take off. Wings are designed to flex... if they do not flex they may snap like chopsticks. The pilot trust up first before releasing the brakes as you can see the engines pushes upwards as they spooled. What an beautiful and incredible piece of machines ever made by humans.
o.O Notice how the engines kinda "lift" at the front when the pilot revs the engines, coz of the massive thrust! Looks awesome! Those GEs have a nice sound to them... Seems like it was an "actionfilled" take off... :p
Cool the way the wings flex and engines wobble.. these are designed to "give". I appreciate though if someone afraid of flying was watching this; could be a tad scary :)
I'm used to being on half-loaded 737-700's bouncing out of Manchester. I'd find that long takeoff roll to be a little nerve racking. Now I'll know what to expect when I fly the jumbos.
Haha yeah the flexing is normal.. in aerospace engineering we study it as a phenomenon called aeroelasticity.. to put it in perspective, the forces acting on the wing are greater than the weight of the airplane thats why its lifting off the ground, and all that force (we're talking over 400,000 lbs on each wing) causes the wing to bend upward. In addition since the flow field around the wing keeps changing the pressure distribution keeps changing so its flutters.
