Make your own free website on Tripod.com


Wingsailer
Manual

~~~~~

Wingsailer
Homepage


Assembly
Instructions


Assembling
the Wing


Transportation


Sailing
Safety


Tacking
Basics


Righting
Instructions


Wingsailing Basics


Wingfoil
Aerodynamics





Wingsailer
Homepage


e-mail
Joanie

In top image, the windward side of the streamlined surface (the side more directly toward the wind) has been pushed in so that it is concave.  This reduces drag a little, but increases the thrust considerably. It is now a true wing that is efficient at low air speed (30 mph and below).

Now, isn't this a coincidence?  Your WINGSAILER just happens to have a wing.  If you compare the top image with bottom image of a standard sail, you can see why.