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Why The Up-Curve Of Windows On Airbus Widebodies?

Mon Aug 29, 2005 11:16 am

I was wondering why there is a curve upwards of the rear windows on Airbus widebodies. At first I thought it was the pictures I was looking at until I saw one myself. If anyone can explain my curiosity would be gratefully sated.


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liedetectors
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RE: Why The Up-Curve Of Windows On Airbus Widebodi

Mon Aug 29, 2005 11:38 am

Being from Boeing, I am happy to say that this is due to an Airbus SNAFU (you can also see this on the IL-86). Airbus located the floor too low, so that near the rear of the plane, the underfloor cargo space did not provide enough room for the LD3 cargo containers. Instead of raising the entire floor structure and further reducing the passenger cabin volume, it was decided to simply raise the floor at the rear of the aircraft to allow enough room for the 64-inch tall cargo containers.
If it was said by us, then it must be true.
 
aeroweanie
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RE: Why The Up-Curve Of Windows On Airbus Widebodies?

Mon Aug 29, 2005 12:10 pm

To add a little more to Liedetectors' answer: Airbus decided to upsweep the rear fuselage, instead of using a conical close out, like on the 757 and 767. This led to the problem that Liedetectors relates. This upwards bend in the floor makes loading main deck cargo on freighters difficult - the rear pallets have to be pushed up the incline.
 
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HAWK21M
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RE: Why The Up-Curve Of Windows On Airbus Widebodies?

Mon Aug 29, 2005 1:49 pm

Quoting AeroWeanie (Reply 2):
This upwards bend in the floor makes loading main deck cargo on freighters difficult - the rear pallets have to be pushed up the incline.

How steep is the Taper & what would be the Height difference.

This Taper makes the Windows look weird.Is it on all Airbus Widebodies.
Was there an Attempt to raise the floor height later on.

regds
MEL
I may not win often, but I damn well never lose!!! ;)
 
SlamClick
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RE: Why The Up-Curve Of Windows On Airbus Widebodies?

Mon Aug 29, 2005 11:32 pm

An incidental benefit of this is that the deck is nearly level in flight, back at the aft end of the cabin. Flight attendants start out of there with the cart and soon find themselves pushing it up hill.
Happiness is not seeing another trite Ste. Maarten photo all week long.
 
Hals
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RE: Why The Up-Curve Of Windows On Airbus Widebodies?

Tue Aug 30, 2005 4:03 am

At normal pitch up during level flight I thought all F/A's had to push the cart "uphill"...whatever a/c they were flying in.

The Airbus taper maybe only makes it look worse...or is it really steeper ? One for the Airbus jockeys to answer methinks  Silly
 
FredT
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RE: Why The Up-Curve Of Windows On Airbus Widebodies?

Tue Aug 30, 2005 4:31 am

Quoting Liedetectors (Reply 1):
Being from Boeing, I am happy to say that this is due to an Airbus SNAFU (you can also see this on the IL-86). Airbus located the floor too low, so that near the rear of the plane, the underfloor cargo space did not provide enough room for the LD3 cargo containers. Instead of raising the entire floor structure and further reducing the passenger cabin volume, it was decided to simply raise the floor at the rear of the aircraft to allow enough room for the 64-inch tall cargo containers.

Sooo... you are saying that Boeing unnecessarily reduced the passenger cabin volume in the entire cabin, just to be able to fit ULDs in the tail and have a level floor? Smart move! Yeah, they DO seem cramped...  Wink

Tongue-in-cheek, aircraft design is all compromises all the way - and there's rarely a 'right' answer to any given choice.

Cheers,
/Fred
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andz
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RE: Why The Up-Curve Of Windows On Airbus Widebodies?

Tue Aug 30, 2005 4:45 am

I first saw this on an A300, to be honest as a passenger you don't notice it when onboard.
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liedetectors
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RE: Why The Up-Curve Of Windows On Airbus Widebodies?

Tue Aug 30, 2005 8:47 am

Quoting Andz (Reply 7):
I first saw this on an A300, to be honest as a passenger you don't notice it when onboard

Actually, you kind of do. I sat in the last row of a AA A300 one time and i definetly noticed the floor ramping up at the back. Good thing it didnt cut into the head room tho.
If it was said by us, then it must be true.
 
aerlingus330
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RE: Why The Up-Curve Of Windows On Airbus Widebodies?

Tue Aug 30, 2005 9:48 am

Quoting Andz (Reply 7):
to be honest as a passenger you don't notice it when onboard.

I too have noticed it, but on an EI A330-300. Though, I thought that I would have noticed it more looking at the outside because it looks more of a rise than it really is onboard...  Smile

AerLingus330
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AR1300
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RE: Why The Up-Curve Of Windows On Airbus Widebodies?

Tue Aug 30, 2005 12:38 pm

I noticed it when I sat in the last seat of AR's 342, IIRC it was 42 F.
It is like in a movie theater, sorta.

Mike
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jfkaua
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RE: Why The Up-Curve Of Windows On Airbus Widebodies?

Tue Aug 30, 2005 12:49 pm

Quoting Andz (Reply 7):
I first saw this on an A300, to be honest as a passenger you don't notice it when onboard

Yea you do.. I was on an aa a300 and it was very obvious.. i even heard a "its because this is where the tail begins"
 
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HAWK21M
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RE: Why The Up-Curve Of Windows On Airbus Widebodies?

Tue Aug 30, 2005 5:34 pm

Any cabin pics of this view.
regds
MEL
I may not win often, but I damn well never lose!!! ;)
 
RedDragon
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RE: Why The Up-Curve Of Windows On Airbus Widebodies?

Wed Aug 31, 2005 8:14 pm


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Photo © Christian Galliker
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Photo © Freight-Dawg - Airside Photography

The ramped section often comes across fairly obviously in cabin shots taken from the rear of the aircraft, although not always:
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Photo © Daniel Hamer
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Photo © Pierre Lacombe

I believe the deck angle is only something like 2-3° - less than it usually appears from the outside. Over in the KLM A330 thread in CivAv, I wondered why airlines don't tend to match their cheatlines to the windowline to disguise the rise a little.

Rich
 
RedDragon
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RE: Why The Up-Curve Of Windows On Airbus Widebodies?

Wed Aug 31, 2005 9:05 pm

Just another couple of photos to illustrate how a sloping rear floor sometimes is, and sometimes isn't, obvious:
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Photo © Andrei Nesvetaev
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Photo © Joseph K.K. Lee

 Wink
 
GQfluffy
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RE: Why The Up-Curve Of Windows On Airbus Widebodies?

Thu Sep 01, 2005 1:20 pm

Quoting RedDragon (Reply 13):
I wondered why airlines don't tend to match their cheatlines to the windowline to disguise the rise a little.

DL did...
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Photo © Kai Ziehl
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Photo © Oliver Brunke



But, to me, it didn't hide it all that well...
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andz
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RE: Why The Up-Curve Of Windows On Airbus Widebodies?

Fri Sep 02, 2005 6:39 am

Guess I was drunk then....lol
After Monday and Tuesday even the calendar says WTF...

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