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Boeing Raked Wingtips  
User currently offlineCancidas From Poland, joined Jul 2003, 4112 posts, RR: 11
Posted (8 years 10 months 2 weeks 1 day 14 hours ago) and read 2670 times:

while Aviation Partners is the company behind the blended winglets used by boeing and other manufacturers, who do the raked wingtips belong to, if not boeing?


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5 replies: All unread, jump to last
 
User currently offlineAeroWeanie From United States of America, joined Dec 2004, 1607 posts, RR: 52
Reply 1, posted (8 years 10 months 2 weeks 1 day 14 hours ago) and read 2662 times:
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Boeing holds the two patents on raked wing tips. They are US Patent 6,089,502 "Blunt-Leading-Edge Raked Wingtips" and US Patent 5,039,032 "High Taper Wing Tip Extension".

User currently offlineNZ1 From New Zealand, joined May 2004, 2244 posts, RR: 26
Reply 2, posted (8 years 10 months 4 days ago) and read 2518 times:
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What other aircraft besides the 764 and 772LR have raked wingtips, if any??

NZ1


User currently offlineHAWK21M From India, joined Jan 2001, 31660 posts, RR: 56
Reply 3, posted (8 years 10 months 3 days 21 hours ago) and read 2499 times:

Quoting NZ1 (Reply 2):
What other aircraft besides the 764 and 772LR have raked wingtips, if any


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MEL



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User currently offlineHa763 From United States of America, joined Jan 2003, 3628 posts, RR: 5
Reply 4, posted (8 years 10 months 3 days 13 hours ago) and read 2463 times:
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The 787-8 and -9 will also have raked wingtips, as would the 747Adv.

User currently offlineAmeriCam From United States of America, joined Dec 2002, 29 posts, RR: 1
Reply 5, posted (8 years 10 months 3 days 8 hours ago) and read 2429 times:

The idea of raked wingtips is associated with something called the Schuemann Planform. From my understanding, the Schuemann Planform is a set of aerodynmic priciples and rules regarding the design of a wing according to some guy named Schuemann. How strictly Boeing conforms to this planform I don't know, but Airbus has used ideas from it as well in the A310/330/340 (all aircraft who also utilize the raked wingtip. Google it, maybe you'll learn something.

Cameron



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