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<blockquote id="quote" class="ffs">quote:Originally posted by floridadreamvilla.co.uk
It's perfectly normal and a design feature of all aircraft. If the wings were built to be totally rigid then you would have a very big chance of problems, but with the in-built flexibility they have they are extremely safe.
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In fact there is more chance of them snapping off if they were rigid.
Steve & Dawn
<blockquote id="quote" class="ffs">quote:Originally posted by Mach 2
<blockquote id="quote" class="ffs">quote:Originally posted by Robert5988
<blockquote id="quote" class="ffs">quote: If the plane goes into a vertical dive I understand the wings don't flex at all as they are not supplying any lift.[/quote]
For anyone who actually took the above post seriously, let me reassure them that airliners do not go into vertical dives. I suspect the following quote by Nostromo was not meant to be taken seriously either.
<blockquote id="quote" class="ffs">quote:Maybe the birdlike 'flapping' effect of the wings gives more lift to the plane[/quote]
The purpose of wings on aircraft(and birds for that matter) is to provide lift. In turbulent air this causes them to flex.
Some planes like jet fighters(in case of any misunderstanding these do not carry paying passengers) can go into a vertical dive. In this manoeuvre they are not providing lift and hence do not flex.(well not much anyway)
Robert(suitably chastised)
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Im glad you clarified as there are a lot of nervous flyers on the forum who do not have the same understanding, knowledge or interest in aviation as you and I do[msnwink]
Now you have stood in that corner long enough so you are forgiven LOL!![msnsmile2]
Don't get me going on jet fighters, it is my dream to fly in a Tornado ever since I diverted in to RAF Lossiemouth............Have to make do with Flight Simulator!!!
http://www.orlando-guide.info/forums...aftornado2.gif
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I was staioned at RAF Lossiemouth Lucy back in 1974.... We saw the first Jaguars in Service.[msnsmile] I ended up there after training and giving my 3 area choices of Scampton, Waddington and Conningsby all in Lincolnshire..[msnscared] Anyway I did end up being at Scampton as my last tour of duty (5 years)and was with the Red Arrows.
Steve & Dawn
<blockquote id="quote" class="ffs">quote:Originally posted by Robert5988
<blockquote id="quote" class="ffs">quote:I used to be the best paper plane maker in my school [/quote]
Paper! You wouldn't catch me flying in one of those. The wings would flex far too much and think of the fire risk!
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Fire risk is right. I got a lot of flak when one of the girls complained to the teacher!
<blockquote id="quote" class="ffs">quote:
I was staioned at RAF Lossiemouth Lucy back in 1974.... We saw the first Jaguars in Service. I ended up there after training and giving my 3 area choices of Scampton, Waddington and Conningsby all in Lincolnshire.. Anyway I did end up being at Scampton as my last tour of duty (5 years)and was with the Red Arrows.
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Steve & Dawn
WOW! You were with the Red Arrows, how cool is that! Tell me more please I love them, they were up at Manchester when they had the Commonwealth Games we got quite close to them, the pilots came over and gave the children bits and pieces, so tell me more!!!!
<blockquote id="quote" class="ffs">quote:Originally posted by cjboatman
I'm glad to hear this sort of movement is normal, now, what about all the noises during taxi???
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Aircraft are designed to fly. The last thing the designers and engineers do, after the thing flies straight, is to attach wheels and make it taxi!
So, any noises you hear are hydraulic pumps (the nosewheel steering is hydraulic), the bumps in the ground, and the loose bolts that hold the wings on!!! ONLY KIDDING!
<blockquote id="quote" class="ffs">quote:Originally posted by flyrr100
<blockquote id="quote" class="ffs">quote:Originally posted by cjboatman
I'm glad to hear this sort of movement is normal, now, what about all the noises during taxi???
[/quote]
Aircraft are designed to fly. The last thing the designers and engineers do, after the thing flies straight, is to attach wheels and make it taxi!
So, any noises you hear are hydraulic pumps (the nosewheel steering is hydraulic), the bumps in the ground, and the loose bolts that hold the wings on!!! ONLY KIDDING!
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Jeff,
What about all the duck tape[msnwink]
when an aircraft is flying because of the shape of the wing the air beneath is a higher pressure than above, this creates lift and so the wing bends upwards. In turbulent weather because of the air pressure changes this difference between the top and bottom of the wings alters causing the wings to straighten or curve down. Hope that makes sense seems clearer in my head than on screen
<blockquote id="quote" class="ffs">quote:Originally posted by Mach 2
<blockquote id="quote" class="ffs">quote:
I was staioned at RAF Lossiemouth Lucy back in 1974.... We saw the first Jaguars in Service. I ended up there after training and giving my 3 area choices of Scampton, Waddington and Conningsby all in Lincolnshire.. Anyway I did end up being at Scampton as my last tour of duty (5 years)and was with the Red Arrows.
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Steve & Dawn
WOW! You were with the Red Arrows, how cool is that! Tell me more please I love them, they were up at Manchester when they had the Commonwealth Games we got quite close to them, the pilots came over and gave the children bits and pieces, so tell me more!!!!
[/quote]
When they first first arrived at Scampton it was fantastic everybody walking around with stiff necks from watching them all the time...lol[msnwink] it was fantastic. After a while the novelty wore off. During the winter months, subject to weather conditions, they were allocated 6 X 40mins practice slots over and around the Airfield each day. It was wierd you would be watching half of a "Diamond 9" Or just 3 of them flying in formation This is to train the new pilots. It takes almost to the spring to fly a full 9 ship. Then they go to Cyprus to learn the new seasons display. We got to see some right "Characters". They were a decent buch of guys mostly if ever you wanted signed posters etc you could always get them. Some of the guys I worked with went up for a jolly with them. One guy was a lowly airman his pilot took him up to an airbase up north and gave him one of his shoulder rank badges and took him in the officer's mess for lunch! another recounted flying low upside down over the Lake distict. While I was there I saw Torvil and Dean, (Dean went up) Ian Botham, Prince Andrew and Fergie (Andrew flew with the Reds and Fergie flew in a bulldog) There was always some celeb or other being taken up in the winter. We lost 3 aircraft on the base one fatal while I was there and a couple at displays or in transit to them.I was an RAF Fireman. One that springs to mind was when one of the "Synchro Pair" tried to fly under a power line (Bear in mind when they travel to different venues the aircraft engineer flies in the back)Well, he hit the power line and the cable dug in just below the front of the cockpit about 18 inches and then snapped. But by this time the engineer had gone....Bang!! out he went! He landed in someones back garden the pilot managed to get the aircract to Kinloss I think. I saw the aircaft when it came back and he was lucky it didn't take his legs off. Anyway he was asked to leave the Red Arrows after that. Will shut up now....going on a bit...lol[msnsmile]
Steve & Dawn
One of the most amazing sights you might see is watching a 747 from the start of its take-off roll until it gets airborne- if you get the opportunity, just watch the wing tips, and you will see them flex upwards about 16 feet by the end of the take-off roll, at which point the aircraft rotates skywards, the wings generating enough lift to cause nearly 400 tonnes to climb into the sky. It really is spectacular. I'm lucky enough to see it regularly since I fly them- don't misunderstand me, I don't look back at my wings as we get airborne, just watch others whilst I sit in the queue at Heathrow!
As to noises on taxi-out, 747s have a peculiar habit of making unusual noises from the nosewheel area during particularly tight turns eg. lining up at the end of the runway; more often you will hear a significant amount of noise from motors extending the flaps to the take-off position during taxi-out; likewise, fairly soon after take-off you will hear the same motors retracting the flaps, usually in 3 or 4 stages, back into the clean wing position for efficient high-speed flight; and, of course, there is a fair amount of noise as the undercarriage is retracted into the plane, and the associated doors motored closed. Then there is the noise of the 6-month olds expressing their displeasure at this unnatural means of transport, and next, hopefully, the clink of ice on glass as you are offered your first g & t.
Bry