Cow Horn Winglets on an A320
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Joined: Sep 2002
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From: Middlesesx
Cow Horn Winglets on an A320
Just spotted a photo of the first above aircraft with cow horn winglets as opposed to triangular shaped end of wing extensions unique to Airbus. Are these existing triangular winglets there for the same purpose as the usual Boeing style, are they as effective, from the A320 above I must assume that they are not? Finally from previous threads I have read that winglets offer a 5+% saving but in real terms how long might it take to get the initial outlay back.
Joined: Aug 2002
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From: Switzerland, Singapore
Pix: Make a Google search on the net, and you'll find some, like here: http://www.!!!!!!!!!!!!!!/open.file/1027446/M/%5D.
There is also a Flight International article around, I'm too lazy to search for it. There it's explained that there are 2 different shapes, one similar to A330, one like on the BBJ.
The essays are done together with JetBlue.
I have the impression that JetBlue is looking for better fuel numbers, because those shapes are rather for better cruise performance, while the conventional A320 wingtip fence is optimized for take offs and landings. That's why A380 has a similar shaped wingtip fence (for less wakes).
At least that's my personal analysis of the public information.
hth,
Dani
There is also a Flight International article around, I'm too lazy to search for it. There it's explained that there are 2 different shapes, one similar to A330, one like on the BBJ.
The essays are done together with JetBlue.
I have the impression that JetBlue is looking for better fuel numbers, because those shapes are rather for better cruise performance, while the conventional A320 wingtip fence is optimized for take offs and landings. That's why A380 has a similar shaped wingtip fence (for less wakes).
At least that's my personal analysis of the public information.
hth,
Dani
