over all lenght 132 ft
8000 sq-ft of sail area
150 long tons
displacement type hull
2006-08-23 01:45:18 · 5 answers · asked by amoc1ca 1 in Science & Mathematics ➔ Engineering
Rules of thumb and formulas found in yachting magazines are probably what you are looking for. If you want to go back to the aerodynamic basics you would need to consider at least the wind speed and the direction of the apparent wind. In wind energy a formula called the "Bent Air Law of Wind Aerodynamics" provides the driving force on the blades as a proportion from these two considerations: F = (rho)CV^2(1 - cos (alpha)). Can't be much more help than this. It is interesting that the sailboat speed is a factor in this and that the driving force does not diminish with faster boat speeds in keeping with the greater amounts of wind flow mass seen - unlike the propeller torque of engines, which tapers off at higher boat speeds.
2006-08-23 03:28:40 · answer #1 · answered by hrdwarehobbyist 2 · 1⤊ 0⤋
the formula for hull ( maximum) speed of a displacement sailboat is square root of the length of the water line times 1.25
2006-08-23 09:58:47 · answer #2 · answered by yankee_sailor 7 · 0⤊ 1⤋
the formula would be the wind pressure on the sails, minus the drag from the boat, minus the drag of the water, or:
Speed(sb) = (friction{air} + friction{water}) * (Power{sail} / weight)
2006-08-23 09:47:46 · answer #3 · answered by jasonalwaysready 4 · 0⤊ 0⤋
No formula - experiment!
2006-08-23 09:21:01 · answer #4 · answered by jude l 2 · 0⤊ 0⤋
Wouldn't it be much simpler to consult your gps?
2006-08-23 08:51:34 · answer #5 · answered by Mr. Peachy® 7 · 0⤊ 0⤋