Quote:
Originally Posted by Burty248
I remember that large airliners had a problem with too much weight and not enough wing length. They fixed this issued by adding a small vertical section on the tip of the wing. Have a look a some boeing 747 wing pictures and your get the idea.
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The vertical section on the end of the wing is to give extra lift by preventing the the vacuum created above the wing producing lift leaking over the end of the wing.