Sail downwind faster than the wind!
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From: ThinAirDesigns on 3 Aug 2010 16:15 Cwatters: > "The North American Land Sailing Association made it official Tuesday when > it ratified the results"... An article on the NALSA record from Kimball Livingston -- an editor at Sail Magazine. http://kimballlivingston.com/?p=3971 JB
From: bert on 3 Aug 2010 17:23 On Aug 2, 3:58 am, "Autymn D. C." <lysde...(a)sbcglobal.net> wrote: > On Aug 1, 5:16 am, Tom Roberts <tjroberts...(a)sbcglobal.net> wrote: > > > BTW a modern sailboat on a reach can sail considerably faster than thewind. But > > no boat can do so when running before thewind. > > The wind is free, not fast. The statement is absurd. It fits that the Egyptians use the river Nile about 4,000 BC used "square sails"which could sail only before the wind. The triangular sail,which is able to sail into the wind first appeared about AD 300. Partial vacuum of a triangular sail took a long time coming TreBert
From: George Hammond on 7 Aug 2010 02:04 On Sun, 01 Aug 2010 07:16:53 -0500, Tom Roberts <tjroberts137(a)sbcglobal.net> wrote: >Y.Porat wrote: >> about "sailing agisnst the wind' >> it is an illusion!!! > >You know as little about sailing as you do about physics or math -- i.e. NOTHING >AT ALL. > >There is no "illusion" about sailing upwind, and sailors do it all the time. Not >directly upwind, mind you, but a good boat and crew can approach 45 degrees from >directly upwind. Using alternate tacks the boat can have a long-term path going >directly upwind. > >BTW a modern sailboat on a reach can sail considerably faster than the wind. But >no boat can do so when running before the wind. > > If you don't know what these terms mean, look them up. They are > standard sailing terms. > > >Tom Roberts > > [Hammond] A cambered airplane wing can achieve a maximum lift coefficent of nearly 2.0 Anybody know what the maximum lift coefficient of an ordinary triangular sloop mainsail might be? ======================================== GEORGE HAMMOND'S PROOF OF GOD WEBSITE Primary site http://webspace.webring.com/people/eg/george_hammond Mirror site http://proof-of-god.freewebsitehosting.com HAMMOND FOLK SONG by Casey Bennetto http://interrobang.jwgh.org/songs/hammond.mp3 =======================================
From: Don Stockbauer on 7 Aug 2010 09:37 On Aug 7, 1:04 am, George Hammond <Nowhe...(a)notspam.com> wrote: > On Sun, 01 Aug 2010 07:16:53 -0500, Tom Roberts > > > > > > <tjroberts...(a)sbcglobal.net> wrote: > >Y.Porat wrote: > >> about "sailing agisnst the wind' > >> it is an illusion!!! > > >You know as little about sailing as you do about physics or math -- i.e. NOTHING > >AT ALL. > > >There is no "illusion" about sailing upwind, and sailors do it all the time. Not > >directly upwind, mind you, but a good boat and crew can approach 45 degrees from > >directly upwind. Using alternate tacks the boat can have a long-term path going > >directly upwind. > > >BTW a modern sailboat on a reach can sail considerably faster than the wind. But > >no boat can do so when running before the wind. > > > If you don't know what these terms mean, look them up. They are > > standard sailing terms. > > >Tom Roberts > > [Hammond] > A cambered airplane wing can achieve a maximum lift > coefficent of nearly 2.0 Anybody know what the maximum > lift coefficient of an ordinary triangular sloop mainsail > might be? > ======================================== > GEORGE HAMMOND'S PROOF OF GOD WEBSITE > Primary sitehttp://webspace.webring.com/people/eg/george_hammond God and the Universe are identical memes (pantheism).
From: " SNIP PHYSICS HECKLER>" on 7 Aug 2010 14:52
On Sat, 7 Aug 2010 06:37:44 -0700 |