Red Panda From Hong Kong, joined Jun 2000, 1521 posts, RR: 0 Reply 3, posted (12 years 4 months 3 weeks 5 days 6 hours ago) and read 709 times:
Winglets do no benefit to short or medium haul flights. That's why 777 was not designed to have winglets. For 772ER, 772LR and 773LR, I think Boeing should put winglets on them. However, I don't understand why 737-800 has winglets option. Anyone know why?
Boeing nut From , joined Dec 1969, posts, RR: Reply 5, posted (12 years 4 months 3 weeks 5 days 4 hours ago) and read 677 times:
Boeing did studies of the winglets for the Boeing Business Jet on a 737-800 ( I believe the #1 738 off the line ) and discovered that it could improve the range by a small margin and increase payload carrying capability. As well as reduce drag by a small percentage. Over time, winglets of the 737NG will save the airlines money.
Also, in regards to winglets on the 777, from what I understand, until recently Boeing was not big on incorporating winglets on their aircraft. I don't know why. I fact, when developing the 744, they really couldn't increase the wing span of the 747 because of structural integrity so thier only option was to put winglet on the 744. With the 777, if you look at the top view of a three-view drawing, you will notice a slight raked wingtip. It really doesn't have a conventional wingtip. I think this is where the got the idea for the raked wingtip for the 764 and the longer range versions of the 777. Boeing also was going to incorporate the raked wingtip on the 747X family as well.
Red Panda From Hong Kong, joined Jun 2000, 1521 posts, RR: 0 Reply 7, posted (12 years 4 months 3 weeks 5 days 2 hours ago) and read 657 times:
Yes, I used to like planes with winglets, but as more and more acfts have winglets, you would start to miss those without winglets such as 747 classic. Now, I start to love 747 classic because of their wing shape and the stick attached to the end of the wing tip.