asianguy767
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Winglets On B767

Sun Jul 02, 2006 5:26 am

Wondering if we'll ever see winglets on B767s? Seeing how beneficial they've been on the B737-700s, -800s and even some -300s and the B757-200s. Will we ever see them on B767 b4 the B787 comes into service?
 
rsbj
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RE: Winglets On B767

Sun Jul 02, 2006 5:31 am

The 767-400 already has winglets, like the ones on the 777-200LR and -300ER. They are called raked wingtips and are roughly 50% better than blended winglets. The blended winglets on 737NG's produce a 3-3.5% fuel savings for the average trip, and the raked tips are at 5.5-6% for the 767-400's.
It is tough to see them from most angles, so it is a common misconception.

[Edited 2006-07-01 22:33:24]
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socal
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RE: Winglets On B767

Sun Jul 02, 2006 6:37 am

767-400.....


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1337Delta764
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RE: Winglets On B767

Sun Jul 02, 2006 6:49 am

If blended winglets, which doesn't increase the length of the wing as much as conventional winglets or raked wingtips, were offered for the 767-300ER, I would think that Delta may be a potential customer for the 767-300ER winglets.
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LN-MOW
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RE: Winglets On B767

Sun Jul 02, 2006 7:10 am

It's all up to whichever airline willing to cough up a certification airplane .. DL would, with their sizeable 763-fleet be a good candidate. It would be necessary to pull the initial aircraft out of production for several months.
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Salomon
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RE: Winglets On B767

Sun Jul 02, 2006 7:15 am

I seem to remember Air Canada wanted to install winglets on their 763s. Can anyone confirm?
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HA_DC9
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RE: Winglets On B767

Sun Jul 02, 2006 7:23 am

http://www.prnewswire.com/cgi-bin/st...story/07-18-2004/0002212293&EDATE=

Aviation Partners Boeing announced 767-300ER winglets back in 2004. I think they are still looking for someone to launch it though. As LN-MOW said, someone has to cough up an airplane for a few months for certification. Plus anyone would have to cough up the $ for the retrofits once certified. I seem to recall an FI article a while back stating that APB was in active talks with HA and UPS among others for a launch partner. Could be wrong though.
 
American777
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RE: Winglets On B767

Sun Jul 02, 2006 8:36 am

Didn't Boeing already launched a Boeing 737 version with raked wingtips?

The one I taught Boeing launched was the P-8A Multi-mission Maritime Aircraft that changed the wing extension from a Blended Winglet to a commercially proven raked or backswept wing tip.

Is this aircraft model now in operation with the navy or not? Was it even ever produced or was the program terminated?

I bet Boeing can launch a 737 model series with raked wingtips similar to the one below:



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I bet if the 737 had this feature, it will be able to operate long-haul routes! I bet also WN would be a potential customer for the aircraft to launched new routes to other countries outside North America with cheap low-fares.

I don't think the 737 will ever have this feature but who know the what the future will be.

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seanp11
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RE: Winglets On B767

Sun Jul 02, 2006 2:59 pm

Quoting American777 (Reply 7):
I bet if the 737 had this feature, it will be able to operate long-haul routes!

Raked wingtips are good, but not that good. A 5% increase in fuel savings (2% from blended winglets) isn't suddenly going to make up for the 737's low cargo capacity and high CASM (compared to the 757).

And the 737 can already operate longhaul routes, as the BBJ and 737-700ER, but not profitably with coach seating. It will never be able to fill the same role as the 752.
 
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LN-MOW
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RE: Winglets On B767

Sun Jul 02, 2006 11:06 pm

Quoting American777 (Reply 7):
The one I taught Boeing launched was the P-8A Multi-mission Maritime Aircraft that changed the wing extension from a Blended Winglet to a commercially proven raked or backswept wing tip.

This is correct, and the reason for changing to a raked wingtip is that the blended winglet proved unstable at low altitude and speed. The raked wingtip is better suited for this kind of operation. So don't expect to see it on any other models!  Wink
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solnabo
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RE: Winglets On B767

Sun Jul 02, 2006 11:24 pm

No raked wingtip on 737-900ER, that will loose the "cool" factor imo.

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flying_727
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RE: Winglets On B767

Mon Jul 03, 2006 3:00 am

Boeing is already considering putting raked wingtips on the 737
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DfwRevolution
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RE: Winglets On B767

Mon Jul 03, 2006 3:04 am

Quoting Flying_727 (Reply 11):
Boeing is already considering putting raked wingtips on the 737

Logistics are a major issue, the 737NG must fit into a standard narrowbody gate. At some airports, the blended vertical winglets are already cutting it close. This is one of the reasons AA took so long to commit to the package, and why FL didn't order them from the factory.

Now imagine a flat wingtip that extends wingspan by as much as twelve feet. Yikes!

Not such a big deal for the USN, of course