That's precisely why I give more credence to Venturi.

I like to keep it simple as my name suggests. Why
clutter a good physical reality with extra theories
that may or may not be applicable?





"Thomas Stewart" wrote in message ...
Neal,

Be very careful with your statement on this discussion. You are about to
be swallowed by Newton's first three laws.
I can feel the smiling, sneering faces.. They know "Bernoulli' is
incomplete about sail action. Newton's 1st,2nd,and 3rd Laws are true and
more complete BUT
either is Newton's Laws. They don't cover the Cosanda (probably wrong
spelling) or the apparent circulation forces.

I'm still in a muddle about this since the first time thru it. Our
Newtonians are using flight theories, which are based on vertical
forces. They use terms like ground effects, updrafts and downdrafts
which haven't been truly converted to
horizontal. They are probably right but also incomplete.

Let it go Neal, my friend, Bernoulli will not stand up to close
examination. The Newtonian are dingking around for answers they don't
have. Drop it on them!

And; "I'LL DRINK TO THAT!"

Ole Thom
P/S Bernoulli will answer your sailing needs.