wardialer
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A320 Different Winglets?

Sun Aug 18, 2013 1:29 pm

I just stumbled onto this picture were the A320 winglets are modified.
Never saw this before until now.

Looks like the same design in the winglets as the B737-800.

http://www.planespotters.net/Aviation_Photos/photo.show?id=399930

Are these new winglets designed to resist turbulence and conserve more fuel?
Look odd on an A320.
 
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Starlionblue
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RE: A320 Different Winglets?

Sun Aug 18, 2013 2:17 pm

Them be the Sharklets. Nothing to do with turbulence methinks, but indeed fuel savings. More or less standard on new build 320 family aircraft from now on.

http://www.airbus.com/newsevents/new...ncy-to-operators-around-the-world/

http://www.lufthansagroup.com/uploads/tx_templavoila/1_03.jpg
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817Dreamliiner
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RE: A320 Different Winglets?

Sun Aug 18, 2013 3:17 pm

Quoting wardialer (Thread starter):
Never saw this before until now.

Really?? where have you been all this time??   They've been around for at least a year now... They're called Sharklets.

Quoting wardialer (Thread starter):
Look odd on an A320.

I beg to differ, they make it look a whole lot better in my opinion
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wardialer
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RE: A320 Different Winglets?

Sun Aug 18, 2013 5:48 pm

Yes really!!!! I NEVER saw these before on an A320    

But I like the old standard winglets though. These look kind of a bit strange for an A320. On the B737s they look fine.

[Edited 2013-08-18 10:49:01]
 
aeroweanie
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RE: A320 Different Winglets?

Sun Aug 18, 2013 6:11 pm

There have been four different winglet designs flown on the A320, excluding the tip fences. In the first test program, two winglets, designed by Airbus and Winglet Technology respectively, were flown:

View Large View Medium
Click here for bigger photo!

Photo © Torben Guse
View Large View Medium
Click here for bigger photo!

Photo © Eurospot



Later winglets designed by API were flown:

View Large View Medium
Click here for bigger photo!

Photo © Terence Li



Finally, winglets designed by Airbus were flown and incorporated into the assembly line:

View Large View Medium
Click here for bigger photo!

Photo © OlivierG



The winglets are all designed to reduce aircraft's fuel burn.

[Edited 2013-08-18 11:15:32]
 
Fabo
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RE: A320 Different Winglets?

Mon Aug 19, 2013 1:51 pm

Add to that fences, and the very first 320s wihtout wingtip devices, and we have 6 different configurations, maybe more. Nice  
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HAWK21M
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RE: A320 Different Winglets?

Wed Aug 21, 2013 1:24 pm

Quoting Fabo (Reply 5):
and we have 6 different configurations, maybe more.

Can you list the same.....
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Fabo
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RE: A320 Different Winglets?

Wed Aug 21, 2013 2:01 pm

Quoting HAWK21M (Reply 6):
Can you list the same.....

We have the 4 aforementioned winglets, that is

1. Test winglets by Airbus
2. Test winglets by Winglets Technology
3. Test winglets by API
4. Sharklets by Airbus

then there is

5. Wingtip fences as common on most A320s

and very early production A320s

6. original wing without wingtip devices as shown here


View Large View Medium
Click here for bigger photo!

Photo © N94504



Granted, these only were on the very first A320s and it seems fences were used since 1990 at the latest.
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RandWkop
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RE: A320 Different Winglets?

Sun Aug 25, 2013 8:44 pm

How has the addition of sharklets affected the 32X efficiency versus the 737NG?

[Edited 2013-08-25 13:51:38]
 
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HAWK21M
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RE: A320 Different Winglets?

Thu Aug 29, 2013 7:57 pm

Quoting RandWKOP (Reply 8):
How has the addition of sharklets affected the 32X efficiency versus the 737NG?

Depends who you talk to.....both A and B have their explanations......  
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7BOEING7
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RE: A320 Different Winglets?

Fri Aug 30, 2013 3:37 am

Gee the AB winglets look just like the API winglets -- is there any difference beside who manufactured them??? I guess time, I mean the courts will tell.
 
Fabo
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RE: A320 Different Winglets?

Wed Oct 16, 2013 12:46 pm

Quoting Fabo (Reply 7):
then there is

5. Wingtip fences as common on most A320s

Apparently, these were modified along the years... so now I am looking at no less than 8 different wingtips through A320 production  
Interesting thing.
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ferpe
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RE: A320 Different Winglets?

Wed Oct 16, 2013 7:16 pm

Quoting 7BOEING7 (Reply 10):
Gee the AB winglets look just like the API winglets -- is there any difference beside who manufactured them??? I guess time, I mean the courts will tell.

Having looked at the API patent and the Airbus sharklet patent their claims are in rather different domains. API is all in the non transonic domain focusing on the absence of disturbing vortices from the wing to winglet transit area, the Airbus patent is focused on the transonic design and how it fits into the transonic design of the wing and avoids additional wave drag.

It might therefore very well be that their profiles are quite different even when their planforms seems very similar. As they shall save fuel during cruise the important part is that they don't mess up the transonic design of the outer wing, the planform is important for the low speed behavior, especially how they behave when the wing stalls (they have no slats and must therefore rely on vortice based flow at wing stall alfa angles).

[Edited 2013-10-16 12:19:08]
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hufftheweevil
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RE: A320 Different Winglets?

Sun Oct 20, 2013 1:54 am

Quoting ferpe (Reply 12):
It might therefore very well be that their profiles are quite different even when their planforms seems very similar. As they shall save fuel during cruise the important part is that they don't mess up the transonic design of the outer wing, the planform is important for the low speed behavior, especially how they behave when the wing stalls (they have no slats and must therefore rely on vortice based flow at wing stall alfa angles).

I find it interesting that there even needs to be differences noted in the two designs when it comes to patents and names. B and A don't each have their own names for wings, even if they're shapes and forms differ a bit. So why for winglets and sharklets? Surely most of it has to do with marketing; I mean look at that silly "shark" livery on the A320.

Me...I'll always call them all winglets. Except the "fences" on the A32Xs...them I just call ugly.  
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Viscount724
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RE: A320 Different Winglets?

Sun Oct 20, 2013 10:55 pm

Quoting Fabo (Reply 7):
Granted, these only were on the very first A320s and it seems fences were used since 1990 at the latest.

The A320-100 (only 21 built) did not have the fences.
 
hb88
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RE: A320 Different Winglets?

Fri Oct 25, 2013 5:25 am

Quoting HuffTheWeevil (Reply 13):
I find it interesting that there even needs to be differences noted in the two designs when it comes to patents and names. B and A don't each have their own names for wings, even if they're shapes and forms differ a bit. So why for winglets and sharklets? Surely most of it has to do with marketing; I mean look at that silly "shark" livery on the A320.

Have you been living in a cave?   of course it's marketing: "dreamliner" "jumo-jet", even Aviation Partners try to claim sort sort of rights to the expression "blended winglet". As for the silly shark livery, Airbus sometimes pimps up the occasional aircraft with one-off livery. FOr test aircraft they are flying billboards to a degree. Although I think it's a little corny, it's a break from white livery. Also, the sharklet brand works - it differentiates the Airbus product in the marketplace (except of course on a.net where the armchair engineers reign supreme).

Anyway, google Airbus/sharklets/legal/court/API and you'll find the whole story.
 
CPH-R
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RE: A320 Different Winglets?

Sat Oct 26, 2013 12:59 am

Quoting Viscount724 (Reply 14):
The A320-100 (only 21 built) did not have the fences.

Aren't they're all out of service by now these days? I know BA operated theirs until fairly recently, but I'm not sure how long the Air Inter (and later, AF) birds were operating.
 
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Polot
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RE: A320 Different Winglets?

Sat Oct 26, 2013 7:40 pm

Quoting CPH-R (Reply 16):
Aren't they're all out of service by now these days? I know BA operated theirs until fairly recently, but I'm not sure how long the Air Inter (and later, AF) birds were operating.

Yes, they are all out of service. It should be noted that out of the 21 built, the first A320-100 is Airbus's testbed that they converted to A320-200 standards, although I believe that is going to be retired soonish.

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