Sponsor Message:
Civil Aviation Forum
My Starred Topics | Profile | New Topic | Forum Index | Help | Search 
Why No Winglets On All Aircraft Types?  
User currently offlineSEVEN_FIFTY7 From United States of America, joined Sep 2000, 957 posts, RR: 4
Posted (14 years 5 months 4 weeks 7 hours ago) and read 3446 times:

No winglets on the 757-300 (as well as newer deliveries of the -200), none on the 767s except the -400, none on the 777s, and none on most of the 737NGs.

We know the main purpose is to reduce drag, but wouldn't this principle work on ALL aircraft?


4 replies: All unread, jump to last
User currently offlineBWIrwy4 From United States of America, joined Nov 2001, 940 posts, RR: 1
Reply 1, posted (14 years 5 months 4 weeks 7 hours ago) and read 3434 times:

There are tradeoffs, though. "Wingleted" wings are heavier than conventional wings, so it's a matter of preference. Winglets look great, though.

User currently offlineUAL_777_Pilot From United States of America, joined Dec 2001, 81 posts, RR: 0
Reply 2, posted (14 years 5 months 4 weeks 7 hours ago) and read 3439 times:

I am a 777 pilot for UAL . The thing about winglets is this , they are only economical for long ranges , but I agree with you , I dont know why the B777 doesnt come with a winglet option , well maybe not just the 777-200 like i fly , but definately on the IGW or the ER's would be most appropriate. Also the B767-400 doesnt really have a "winglet" its more of a "wingtip" a true winglet , is what you would find on a MD-11 , B747-400 , A330 , A340. The B767-400 is a type of wingtip that Airbus uses for its A320 , A321 , A319 and soon on the A380 and the A318. Hope this answers your question!

User currently offlineCV640 From United States of America, joined Aug 2000, 952 posts, RR: 5
Reply 3, posted (14 years 5 months 4 weeks 5 hours ago) and read 3410 times:

Winglets only help in longer arnged flights as mentioned above. Otherwise they do add weight and are expensive, just over $750,000 for a set on the CRJ. So, don't want to ding one of those

User currently offlineJetguy From , joined Dec 1969, posts, RR:
Reply 4, posted (14 years 5 months 4 weeks 3 hours ago) and read 3391 times:

For what it's worth, I believe that it was Marcel Dassault, the famous French aircraft designer, who said that properly designed wings don't need winglets. I'm not an aeronautical engineer by any means, but I've flown plenty of hours in aircraft with and without winglets and my personal observation is that what ever small performance gains they provide often is usurped by the handling penalties they impose. I would guess the reason why the "Triple 7" doesn't have winglets is because it has a fresh "clean sheet" wing design that just doesn't need them. Winglets have found their place with "old technology" designs. They allow the manufacturers to improve the aerodynamics with minimal redesign costs.

Top Of Page
Forum Index

This topic is archived and can not be replied to any more.

Printer friendly format

Similar topics:More similar topics...
Why No Winglets On Boeing Aircraft? posted Fri May 12 2000 22:09:43 by Mason
Why No Winglets On 787! posted Sat Oct 7 2006 20:27:37 by Bringiton
Why No Winglets On The B777 posted Wed Dec 17 2003 16:18:56 by B747FAN
Why No Winglets On DL/AA 738s? posted Mon Aug 4 2003 18:36:55 by JFKTOWERFAN
Why Varying Winglets On Airbus Aircraft posted Thu May 9 2002 20:06:45 by Airmale
Why No Winglets On This 744? posted Wed Apr 18 2001 18:08:45 by B7474
Why No Winglets On British Registered B757's? posted Wed Nov 22 2006 12:06:25 by KA501
Why No Winglets For Every 737-700/800? posted Thu Nov 9 2006 23:48:32 by LY777
Why No Geveva On Thomsonfly & Astraeus Website? posted Wed Oct 25 2006 14:15:43 by 8herveg
Why No F Class On AA 767-300s posted Thu Sep 14 2006 03:20:59 by Albird87