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747-8 (Read 2694 times)
Jul 5th, 2006 at 11:51am

dcunning30   Offline
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Interesting!  I didn't know this was coming off the line until I read this article about Airbus.

http://business.timesonline.co.uk/article/0%2C%2C13130-2256673%2C00.html

It's a graceful looking aircraft.  Look at that dihedral, it looks more like a sailplane rathered than a powered aircraft!


...



 

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Reply #1 - Jul 5th, 2006 at 11:57am

Theis   Offline
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B-e-a-utiful aircraft!! Cheesy Shocked
 

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Reply #2 - Jul 6th, 2006 at 1:13pm
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Its basically a 747 designed with the knowledge gained from research for the 787, should be a great plane!
 
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Reply #3 - Jul 23rd, 2006 at 5:09pm

MrJake2002   Offline
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That is one beautiful aircraft!!
 
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Reply #4 - Jul 23rd, 2006 at 5:48pm

Woodlouse2002   Offline
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An artists impression. The real thing will look quite different.
 

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Reply #5 - Jul 23rd, 2006 at 6:12pm

Nexus   Offline
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Quote:
An artists impression. The real thing will look quite different.


The general public never realizes that.
Just look at the first 787 pictures, with the futuristic "shark fin", and the oooh-aaahs associated with that design.

Look at it now, it's in the trash bin  Smiley
 
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Reply #6 - Jul 24th, 2006 at 10:07am

dcunning30   Offline
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LOL!!!!

The expected wet blanket!   Grin Grin Grin Grin Grin

So, you're saying the 787 WON'T have a dihedral like what is shown?   Roll Eyes
 

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Reply #7 - Jul 24th, 2006 at 10:58am

Nexus   Offline
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Touché.

And it looks like you're confusing dihedral design with wing flex  Roll Eyes
 
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Reply #8 - Jul 24th, 2006 at 12:57pm

dcunning30   Offline
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Quote:
Touché.

And it looks like you're confusing dihedral design with wing flex  Roll Eyes



Isn't wing flex essential in calculating dihedral design?  The aerodynamic properties of the wing's shape must be it's shape in flight, not standing static where the wings may/will sag.

Oh yea, I forgot to add the  Roll Eyes
« Last Edit: Jul 24th, 2006 at 2:48pm by dcunning30 »  

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Reply #9 - Jul 24th, 2006 at 3:39pm

Nexus   Offline
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By judging from your first post, it seems like you believed that the aircraft actually looks like that.

The wings will have an upward slant, allright.
But it wont be as much in the picture.

The 747-800 will be longer, and why would you want it less manoverable?
(assuming you know about these things)

To further try to convince you: my friend, who is an aeronautic engineer dismissed the picture at the first glance "It's too much" he replied.

So Dcunning30, the picture you show us exaggerates the upward angle of the wings.
 
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Reply #10 - Jul 24th, 2006 at 3:51pm

dcunning30   Offline
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I knew the pic is an artists rendition.  It was a light post with light commentary, before the wet blanket was cast over the thread.  And in order to conclude the picture is an exaggeration, we would have to have some sort of factual info, such as a pic of the real plane, or some reporting on the subject.  But to assume the plane won't look like what is depicted without substanciation, is just that.....assumptions, or wet blankets, take your pick.

Now, the real plane, once it rolls off the assembly line may or may not have such a graceful dihedral.  We don't know.  But until then, we have what Boeing releases in their press info.  Now, is Boeing given to releasing false information on their aircraft?  If Boeing practices releasing false info, then to be suspicious is warranted, but I have yet to be convince that Boeing practices falsification of press releases.
 

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Reply #11 - Jul 24th, 2006 at 4:01pm

Hagar   Offline
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I suspect the artists's brief was to make the new aircraft look as sexy as possible.

I have to agree with Woodlouse & Nexus. To anyone knowing anything about aerodynamics the wing flex in that impression appears to be highly exaggerated & it wouldn't be at all easy to control with that amount of "dihedral". Before you accuse me of being a wet blanket, the Boeing 747 is my favourite modern airliner. Where possible I would choose that to fly on myself. I always thought it looked very graceful considering its size.
 

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Reply #12 - Jul 24th, 2006 at 4:01pm

dcunning30   Offline
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Quote:
To further try to convince you: my friend, who is an aeronautic engineer dismissed the picture at the first glance "It's too much" he replied.


What does your friend base that statement on?  Current practices?  The Boeing 787 and 747-8 will be making large uses of composites, by nature are much more flexable that the currently used metals.

Surely, you've seen Voyager and other Rutan planes in flight, whth their composite wings and all.  The flex on those wings seem unnatural as well.
 

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Reply #13 - Jul 24th, 2006 at 4:05pm

dcunning30   Offline
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Quote:
I suspect the artists's brief was to make the new aircraft look as sexy as possible.



Agreed.  My response to your following point can be summed up with one word.

Composites!
 

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Reply #14 - Jul 24th, 2006 at 4:10pm

Woodlouse2002   Offline
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Quote:
INow, is Boeing given to releasing false information on their aircraft?  If Boeing practices releasing false info, then to be suspicious is warranted, but I have yet to be convince that Boeing practices falsification of press releases.

Take a look at the first pictures we saw of the 787 and compare them with how it looks now. Boeing does seem to take a fair amount of artistic licence when it comes to pictures of their future aeroplanes.


Whats more, composites need not be more flexible than metals. By composites I assume they mean things like Carbon Fibre. Which is lighter than metal. But as far as i'm aware not much more flexible.
 

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