Schooner! I guess if that is how you can relate to it.
But differs in that the schooner has both sails lifting to leeward. Where as the reverse flow design as discovered on the first iteration with soft sails the windward sail counters to a degree (?) of the leeward sail. Windward sail is working in reverse of leeward. (working in reverse) Think of a plane with its two wings one on each side of the fuselage take one wing off and turn it upside down put it back on . Now think of the flow over each. Most likely one side will be lift down and the other side lifting up (many things determine how much lift mainly camber and set aoa of wing). Now fold those wings up above fuselage at given distance apart and turn the fuse into a boat hull. My work here is know done thank you and good knight.....
Reefing is a simple structural design built into final concept. Solid wing is hinged at center of each wing, top plate slides up and down on mast.
Another theory of the reverse flow design is as a whole looking at the flow around both sails or the entire structure for that matter is its creating an artificial singular airfoil shape truly bending air flow that can only be seen in as a 4th dimension.
--- In harryproa@yahoogroups.com.au, Mike Crawford <mcrawf@...> wrote:
>
>
> You're right!
>
> Kind of like a schooner rig with two hard wing sails, but with a
> single mast that turns them both at once. It even has the possibility
> of vertical lift if you shape the foil right at the top. Reefing
> becomes mostly a matter of fine-tuning the angle -- straight-on there's
> no lift and little drag. The biggest challenge might be in figuring out
> how to keep that "reefed" angle when moored in a storm.
>
> I'd love to see a full-sized version built.
>
> - Mike
>
> / /
> tsstproa wrote:
> >
> >
> >
> > The argument for a shunting solid wing or dyna type is non exsistent.
> >
> > Having sail 90 degrees to the wind during a shunt is totally negated
> > with the double wing reverse flow design.
> >
> > --- In harryproa@yahoogroups.com.au
> > <mailto:harryproa%40yahoogroups.com.au>, harryproa@yahoogroups.com.au
> > <mailto:harryproa%40yahoogroups.com.au> wrote:
> > >
> > >
> > > Hello,
> > >
> > > This email message is a notification to let you know that
> > > a file has been uploaded to the Files area of the harryproa
> > > group.
> > >
> > > File : / Dyna rig testing/how a double wing reverse flow sail
> > shunts.wmv
> > > Uploaded by : tsstproa <tsstproa@>
> > > Description : How a double wing reverse flow sail shunts
> > >
> > > You can access this file at the URL:
> > >
> > http://au.groups.yahoo.com/group/harryproa/files/%20Dyna%20rig%20testing/how%20a%20double%20wing%20reverse%20flow%20sail%20shunts.wmv
> >
> > >
> > > To learn more about file sharing for your group, please visit:
> > >
> > http://help.yahoo.com/l/au/yahoo7/groups/original/ownmod/web/index.htmlfiles
> > >
> > > Regards,
> > >
> > > tsstproa <tsstproa@>
> >
>