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Winglet-restricted Models  
User currently offlineFlightShadow From United States of America, joined Jun 2005, 937 posts, RR: 6
Posted (8 years 1 month 1 week 3 days 8 hours ago) and read 3043 times:

Hello

I'm wondering, are some Boeing models not suited for Winglets? For example, I have only seen winglets on 737-7/800s, 757-200s and on 747-400s. I've also seen winglets some 727s, what? Is there a reason that airframes such as the earlier 747s, 767s, 777s, and earlier 737s can not have winglets?

[Edited 2006-03-12 06:36:47]


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11 replies: All unread, jump to last
 
User currently offlinePilotpip From United States of America, joined Sep 2003, 3139 posts, RR: 11
Reply 1, posted (8 years 1 month 1 week 3 days 5 hours ago) and read 3015 times:

It's not economically feasible.


DMI
User currently offlineKC135TopBoom From United States of America, joined Jan 2005, 12061 posts, RR: 52
Reply 2, posted (8 years 1 month 1 week 3 days 3 hours ago) and read 2996 times:

Winglets can be added to almost any airplane, including the early Boeing jets. There is substantial wing structual work to be done, but it can be done.

Airplanes like the B-777-200/ER/LR/-300ER and the B-767-400 don't need winglets as they have raked wing tips, which also cut down on drag. AC and CO is looking at installing winglets on their B-767-300ERs. That may become a popular program like the retrofitting on the B-757-200s and B-737NGs.

All newer Airbus airplanes come with them as standard equipment.


User currently offlineVikkyvik From United States of America, joined Jul 2003, 9400 posts, RR: 27
Reply 3, posted (8 years 1 month 1 week 3 days 2 hours ago) and read 2990 times:
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Quoting KC135TopBoom (Reply 2):
Airplanes like the B-777-200/ER/LR/-300ER and the B-767-400 don't need winglets as they have raked wing tips, which also cut down on drag. AC and CO is looking at installing winglets on their B-767-300ERs. That may become a popular program like the retrofitting on the B-757-200s and B-737NGs.

Just to clarify a bit....the 777-200LR, 777-300ER, and 767-400ER all have raked wingtips. The 777-200ER does not.

Quoting KC135TopBoom (Reply 2):
All newer Airbus airplanes come with them as standard equipment.

There is a difference between winglets and wing fences. I believe the A310, A320, and A380 all have wing fences. The A330 and A340 have winglets.

~Vik



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User currently offlineAeroWeanie From United States of America, joined Dec 2004, 1606 posts, RR: 52
Reply 4, posted (8 years 1 month 1 week 2 days 12 hours ago) and read 2924 times:
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Quoting FlightShadow (Thread starter):
I'm wondering, are some Boeing models not suited for Winglets? For example, I have only seen winglets on 737-7/800s, 757-200s and on 747-400s. I've also seen winglets some 727s, what? Is there a reason that airframes such as the earlier 747s, 767s, 777s, and earlier 737s can not have winglets?

APB has winglets certified and available for the 737 Classics.


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Winglets have been flown on the 747-200 by APB, but the economics didn't pan out (low hull values), so they were never certified.



Winglets and/or spiroids are under development for the 767 and 777. Burbank Aeronautical II even developed, but never certified, winglets for the 707-320.


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User currently offline777WT From United States of America, joined Jan 2005, 874 posts, RR: 1
Reply 5, posted (8 years 1 month 1 week 2 days 11 hours ago) and read 2903 times:

Quoting AeroWeanie (Reply 4):
Winglets and/or spiroids are under development for the 767 and 777

APB winglets for the 777 has been said to be 7 feet tall!


User currently offlineAlias1024 From United States of America, joined Oct 2004, 2715 posts, RR: 2
Reply 6, posted (8 years 1 month 1 week 2 days 10 hours ago) and read 2885 times:

Quoting KC135TopBoom (Reply 2):
AC and CO is looking at installing winglets on their B-767-300ERs.

CO has 767-200ERs, not 300s.



It is a mistake to think you can solve any major problems with just potatoes.
User currently offline777WT From United States of America, joined Jan 2005, 874 posts, RR: 1
Reply 7, posted (8 years 1 month 1 week 2 days 8 hours ago) and read 2869 times:

Quoting Alias1024 (Reply 6):
CO has 767-200ERs, not 300s.

They also have 767-400ER


User currently offlineStarlionblue From Greenland, joined Feb 2004, 16908 posts, RR: 67
Reply 8, posted (8 years 1 month 1 week 2 days 1 hour ago) and read 2837 times:

Quoting 777WT (Reply 5):
Quoting AeroWeanie (Reply 4):
Winglets and/or spiroids are under development for the 767 and 777

APB winglets for the 777 has been said to be 7 feet tall!

Sounds tall, but remember that the 744 and 330/340 winglets are about 6 feet.



"There are no stupid questions, but there are a lot of inquisitive idiots."
User currently offlineMX757 From United States of America, joined Aug 2005, 628 posts, RR: 12
Reply 9, posted (8 years 1 month 1 week 1 day 22 hours ago) and read 2808 times:

CO is currently installing winglets on the 737-700, 737-800, and 757-200 aircraft. Our 737-900s will get them as soon as AirpatnersBoeing completes the STC.

We won't be installing winglets on the the classic 737-300 and -500. The 300 won't get them because these a/c are do to exit the fleet in the next couple of years. (Some have already left) The 735 doesn't fly a long enough range for winglets to give the a/c any real fuel savings. Plus there is no STC from Boeing to install winglets on the 500 series.

There are no plans to install winglets on the 757-300 either. I had heard that AirpartnersBoeing was working on a STC to install them on the 753 but CO was not interested in putting them on our a/c.

I haven't heard anything about Boeing developing winglets on the 767-200. I've checked their website but I couldn't find any info. Does someone here have a link or article I can check out?

Thanks.



Is it broke...? Yeah I'll fix it.
User currently offlineAeroWeanie From United States of America, joined Dec 2004, 1606 posts, RR: 52
Reply 10, posted (8 years 1 month 1 week 1 day 18 hours ago) and read 2786 times:
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Quoting MX757 (Reply 9):
I haven't heard anything about Boeing developing winglets on the 767-200. I've checked their website but I couldn't find any info. Does someone here have a link or article I can check out?

Towards the bottom of the text:
http://www.spicejet.com/newspage.asp?strNews=BlendedWingletShipsets


User currently offlineMX757 From United States of America, joined Aug 2005, 628 posts, RR: 12
Reply 11, posted (8 years 1 month 1 week 1 day 16 hours ago) and read 2767 times:

Quoting AeroWeanie (Reply 10):
Towards the bottom of the text:

Thanks.



Is it broke...? Yeah I'll fix it.
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