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Underwater sails?
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Brian Whatcott
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Underwater sails?
On 6 May 2004 05:39:49 -0700,
(Parallax) wrote:
"Newdirections Int [Australia]" wrote in message ...
Think of a sailing boat as an aircraft on its side. That's what, in
principle, happens///
"Parallax" wrote in message
om...
Most keels do NOT act as vertical wings but only provide a lateral
force to resist windage and to keep the boat going straight. To be a
good wing, they would have to have an assymetrical cross section.
Airplanes that spend much time inverted often use symmetrical wing
sections.
Brian W
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Underwater sails?