On 2006-03-13, Tony wrote:
Most winglets I've seen point upward, but thinking about the physics of
the things, if they had to extend in only one direction wouldn't down
be better, and wouldn't a plate -- extending both up and down, be best
for sub sonic flight?

Take a look at some models of Airbus - they have winglets that extend
both above and below the wingtip.

--
Dylan Smith, Port St Mary, Isle of Man
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