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Max winglet??????

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When the rampers knock the bottom one off parked at the gate they'll blame us pilots some how some way! But I'll take that 2 week bet!
 
I am not an aerodynamics guru, but I had a conversation with one recently. He said these extreme winglets were really a waste of money due to the additional weight and strengthening required in the wing to support the winglet. He stated that it takes very long segments (7 plus hours) to realize much fuel savings from them. The real reason airlines (and leasing companies) keep having them installed is the accountants believe the airplanes will keep their value longer and they will be easier to re-sell or re-lease them later in their life cycle. Thoughts?

edit - I should say he was a self proclaimed aerodynamics expert.
 
edit - I should say he was a self proclaimed aerodynamics expert.
Ding! We have a winner! If the guy isn't a Boeing engineer, I'd say his 'calculations' were worth less than the cocktail napkin he wrote them on.

HAL
 
Ding! We have a winner! If the guy isn't a Boeing engineer, I'd say his 'calculations' were worth less than the cocktail napkin he wrote them on.

HAL

Aren't winglets an optional addition to the wing? As in, you add them or don't add them to the same wing? i.e. no strengthening required? They are lighter than current blended winglets and provide another 1.5% fuel savings on top of the existing 3% so ups it to 4.5% over a finite wing tip.

I don't know... I'm just a self proclaimed aerodynamic and structural engineer. Perhaps I am just thinking of the 767s where some have winglets and some don't?? agh, whatever... I haven't studied any CFD or PATRAN models of the thing so what do I know.

http://www.b737.org.uk/winglets.htm#ATWinglets

http://www.boeing.com/commercial/aeromagazine/articles/qtr_03_09/article_03_1.html

http://www.youtube.com/watch?v=o6A6arPgXVc
http://www.reuters.com/article/2012/05/02/uk-boeing-idUSLNE84102620120502

http://www.youtube.com/watch?v=d0P4kpjiQho

http://www.youtube.com/watch?v=vD828p9Nt0U

http://www.flightglobal.com/news/ar...oeing-split-opinions-on-737-wing-tips-375348/


http://www.google.com/patents/US20120312928
 

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