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The Physics of Sailing
http://web.mit.edu/2.972/www/reports...sail_boat.html
"MAIN FUNCTIONAL REQUIREMENT: Propel a boat with or against the wind" http://www.phys.unsw.edu.au/~jw/sailing.html * How can a boat sail upwind? * How can boats sail faster than the wind? * Why are eighteen foot skiffs always sailing upwind? We introduce the physics of sailing to answer these and some other questions. But first: A puzzle. http://www.amya.org/sailmanual/part2.html Part II : Basic sail theory and concepts http://motor1.physics.wayne.edu/~cin...ceptest48.html "Sailboat Say I am out on a saiboat. The wind dies. I suggest putting the grill in front of the sail as shown below and lighing it. Will this get the boat in motion? Why? " http://rec-puzzles.org/new/list.pl/physics "sail A sailor is in a sailboat on a river. The current is 3 knots with respect to the land. The wind (air velocity) is zero, with respect to the land. The sailor wants to proceed downriver as quickly as possible, maximizing his downstream speed with respect to the land. Should he raise the sail, or not? Solution" http://www.chicagoboyz.net/archives/002735.html Hummm..... http://www.weathernotebook.org/trans...999/06/04.html "You're on a sailboat on a lake when the wind suddenly dies. For some reason, you have a generator and a really big fan on your boat. Will the fan help you get back to shore?" http://www.grok.ltd.uk/ansshop/encyc...s/physics.html Not a sailing link but maybe some answers to lifes questions.... "When should I pour the cream to keep my tea or coffee hottest?" "Why does the same side of the moon always face the earth?" http://www.pbs.org/safarchive/4_clas.../4494_idx.html http://www.physics.ucla.edu/demoweb/..._contents.html http://www.kawartha.net/~apanter/jro.htm This link is about J. Robert Oppenheimer..." At eighteen, his father gave him a 28 foot sail boat which he named...." |
Great articles!
-p -- Patrick's Sailing Blog: http://shipsrecord.com/blogs/patrick/ http://ShipsRecord.com -- Get you own Blog http://sailing.meetup.com/11/ --- Seattle Sailing Meetup "Mic" wrote in message ... http://web.mit.edu/2.972/www/reports...sail_boat.html "MAIN FUNCTIONAL REQUIREMENT: Propel a boat with or against the wind" http://www.phys.unsw.edu.au/~jw/sailing.html * How can a boat sail upwind? * How can boats sail faster than the wind? * Why are eighteen foot skiffs always sailing upwind? We introduce the physics of sailing to answer these and some other questions. But first: A puzzle. http://www.amya.org/sailmanual/part2.html Part II : Basic sail theory and concepts http://motor1.physics.wayne.edu/~cin...ceptest48.html "Sailboat Say I am out on a saiboat. The wind dies. I suggest putting the grill in front of the sail as shown below and lighing it. Will this get the boat in motion? Why? " http://rec-puzzles.org/new/list.pl/physics "sail A sailor is in a sailboat on a river. The current is 3 knots with respect to the land. The wind (air velocity) is zero, with respect to the land. The sailor wants to proceed downriver as quickly as possible, maximizing his downstream speed with respect to the land. Should he raise the sail, or not? Solution" http://www.chicagoboyz.net/archives/002735.html Hummm..... http://www.weathernotebook.org/trans...999/06/04.html "You're on a sailboat on a lake when the wind suddenly dies. For some reason, you have a generator and a really big fan on your boat. Will the fan help you get back to shore?" http://www.grok.ltd.uk/ansshop/encyc...s/physics.html Not a sailing link but maybe some answers to lifes questions.... "When should I pour the cream to keep my tea or coffee hottest?" "Why does the same side of the moon always face the earth?" http://www.pbs.org/safarchive/4_clas.../4494_idx.html http://www.physics.ucla.edu/demoweb/..._contents.html http://www.kawartha.net/~apanter/jro.htm This link is about J. Robert Oppenheimer..." At eighteen, his father gave him a 28 foot sail boat which he named...." |
....... Some BAD articles that are contrary to modern aerodynamics
go to www.arvelgentry.com and lookup how *sails* (thin section wings) work and generate lift (hint: viscosity) !!!! Bernoulli theorem doesnt apply to thin foils such as sails, and not much application to wings. Bernoulli pretains to 'conduit" or ducted flow. aaaaaaaaaaaaaaaarrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrr gh !!!!!!!! Now you know why the American Science education is so faulty and so lags the rest of the world. In article , Mic wrote: http://web.mit.edu/2.972/www/reports...sail_boat.html "MAIN FUNCTIONAL REQUIREMENT: Propel a boat with or against the wind" http://www.phys.unsw.edu.au/~jw/sailing.html * How can a boat sail upwind? * How can boats sail faster than the wind? * Why are eighteen foot skiffs always sailing upwind? We introduce the physics of sailing to answer these and some other questions. But first: A puzzle. http://www.amya.org/sailmanual/part2.html Part II : Basic sail theory and concepts http://motor1.physics.wayne.edu/~cin...ceptest48.html "Sailboat Say I am out on a saiboat. The wind dies. I suggest putting the grill in front of the sail as shown below and lighing it. Will this get the boat in motion? Why? " http://rec-puzzles.org/new/list.pl/physics "sail A sailor is in a sailboat on a river. The current is 3 knots with respect to the land. The wind (air velocity) is zero, with respect to the land. The sailor wants to proceed downriver as quickly as possible, maximizing his downstream speed with respect to the land. Should he raise the sail, or not? Solution" http://www.chicagoboyz.net/archives/002735.html Hummm..... http://www.weathernotebook.org/trans...999/06/04.html "You're on a sailboat on a lake when the wind suddenly dies. For some reason, you have a generator and a really big fan on your boat. Will the fan help you get back to shore?" http://www.grok.ltd.uk/ansshop/encyc...s/physics.html Not a sailing link but maybe some answers to lifes questions.... "When should I pour the cream to keep my tea or coffee hottest?" "Why does the same side of the moon always face the earth?" http://www.pbs.org/safarchive/4_clas.../4494_idx.html http://www.physics.ucla.edu/demoweb/..._contents.html http://www.kawartha.net/~apanter/jro.htm This link is about J. Robert Oppenheimer..." At eighteen, his father gave him a 28 foot sail boat which he named...." |
It is scary to see a 4th yr MIT student misapplying HS level physics in
ignorance. "The things that pass for knowledge, I can't understand..." - Steely Dan |
Mic wrote:
http://web.mit.edu/2.972/www/reports...sail_boat.html "MAIN FUNCTIONAL REQUIREMENT: Propel a boat with or against the wind" http://www.phys.unsw.edu.au/~jw/sailing.html * How can a boat sail upwind? * How can boats sail faster than the wind? * Why are eighteen foot skiffs always sailing upwind? We introduce the physics of sailing to answer these and some other questions. But first: A puzzle. http://www.amya.org/sailmanual/part2.html Part II : Basic sail theory and concepts http://motor1.physics.wayne.edu/~cin...ceptest48.html "Sailboat Say I am out on a saiboat. The wind dies. I suggest putting the grill in front of the sail as shown below and lighing it. Will this get the boat in motion? Why? " http://rec-puzzles.org/new/list.pl/physics "sail A sailor is in a sailboat on a river. The current is 3 knots with respect to the land. The wind (air velocity) is zero, with respect to the land. The sailor wants to proceed downriver as quickly as possible, maximizing his downstream speed with respect to the land. Should he raise the sail, or not? Solution" http://www.chicagoboyz.net/archives/002735.html Hummm..... http://www.weathernotebook.org/trans...999/06/04.html "You're on a sailboat on a lake when the wind suddenly dies. For some reason, you have a generator and a really big fan on your boat. Will the fan help you get back to shore?" http://www.grok.ltd.uk/ansshop/encyc...s/physics.html Not a sailing link but maybe some answers to lifes questions.... "When should I pour the cream to keep my tea or coffee hottest?" "Why does the same side of the moon always face the earth?" http://www.pbs.org/safarchive/4_clas.../4494_idx.html http://www.physics.ucla.edu/demoweb/..._contents.html http://www.kawartha.net/~apanter/jro.htm This link is about J. Robert Oppenheimer..." At eighteen, his father gave him a 28 foot sail boat which he named...." See also "Aero-Hydrodynamics of Sailing" by Tony Marchaj. |
On Sun, 31 Jul 2005 09:54:23 -0400, Tim Mueller wrote:
Mic wrote: http://web.mit.edu/2.972/www/reports...sail_boat.html "MAIN FUNCTIONAL REQUIREMENT: Propel a boat with or against the wind" http://www.phys.unsw.edu.au/~jw/sailing.html * How can a boat sail upwind? * How can boats sail faster than the wind? * Why are eighteen foot skiffs always sailing upwind? We introduce the physics of sailing to answer these and some other questions. But first: A puzzle. http://www.amya.org/sailmanual/part2.html Part II : Basic sail theory and concepts http://motor1.physics.wayne.edu/~cin...ceptest48.html "Sailboat Say I am out on a saiboat. The wind dies. I suggest putting the grill in front of the sail as shown below and lighing it. Will this get the boat in motion? Why? " http://rec-puzzles.org/new/list.pl/physics "sail A sailor is in a sailboat on a river. The current is 3 knots with respect to the land. The wind (air velocity) is zero, with respect to the land. The sailor wants to proceed downriver as quickly as possible, maximizing his downstream speed with respect to the land. Should he raise the sail, or not? Solution" http://www.chicagoboyz.net/archives/002735.html Hummm..... http://www.weathernotebook.org/trans...999/06/04.html "You're on a sailboat on a lake when the wind suddenly dies. For some reason, you have a generator and a really big fan on your boat. Will the fan help you get back to shore?" http://www.grok.ltd.uk/ansshop/encyc...s/physics.html Not a sailing link but maybe some answers to lifes questions.... "When should I pour the cream to keep my tea or coffee hottest?" "Why does the same side of the moon always face the earth?" http://www.pbs.org/safarchive/4_clas.../4494_idx.html http://www.physics.ucla.edu/demoweb/..._contents.html http://www.kawartha.net/~apanter/jro.htm This link is about J. Robert Oppenheimer..." At eighteen, his father gave him a 28 foot sail boat which he named...." See also "Aero-Hydrodynamics of Sailing" by Tony Marchaj. Marchaj is great. Two other good references a 1. Bethwaite, High Performance Sailing 2. Anderson and Eberhardt, Understanding Flight |
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