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I understand that the purpose of winglets is to decrease the wingtip vortexes to increase performance in climbs and cruising by redirecting the air over the wing. However on some old cessnas the winglets curve downwards. What is the reason for this?

jskypilot
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    A picture would be really helpful here, if you can find one. – Pondlife Mar 25 '16 at 19:02
  • @Pondlife The Cardinal II has wingtips that curve downwards, its difficult to get a good picture of it though. – Ron Beyer Mar 25 '16 at 19:18
  • http://s179.photobucket.com/user/Cardinal774/media/blog05cfo/wingtips.jpg.html is a good image to see a Cardinal II wingtip next to an older 177. – Ron Beyer Mar 25 '16 at 19:31
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    http://aviation.stackexchange.com/questions/22232/is-this-a-wing-tip-device-on-the-a-10-warthog has all the stuff you want in it. – SMS von der Tann Mar 25 '16 at 20:15

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