PPRuNe Forums - View Single Post - Wing tip fences and winglets
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Old 22nd Jul 2010, 00:56
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Tyres O'Flaherty
 
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Probably correct, but it's economics that rules.

Those straight up & down fences were probably much cheaper to add, ( remember its a cost benefit analysis that rules what is done ) than those carefully formed & aerodynamically analysed blended winglets.

They didn't go on there until it was worthwhile adding them in pounds shillings and pence
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