and water can lead to more skillful sailing.After a brief but insightful tour of the history of sailing, the book explores the physics involved in making faster sailing crafts for both upwind and downwind sailing, including Newton's impact theory of fluid resistance and lift and drag phenomena....
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. A river runs straight from West to East at 10 knots. A 10 mile race is held: the boats sail downstream, from West to East. The first ...
Obviously, when sailing to windward we are trying to reach a destination upwind, and any sideslipping that pushes us downwind is undesirable. The slower the velocity of the fluid flowing past the ‘airfoil,’ the less efficiency it has as a lifting surface. So when the boat is going slowly...
How do sailboats sail upwind? Three essential knots Before departure briefing Sailing Mooring and anchoring Troubleshooting Sailing qualifications Yachts aren’t blown along – they are ‘sucked along’. The sail creates a low pressure zone in front of the sail and a high pressure zone behind t...
In upwind sailing conditions, bulbs of canting keel sailboats operate close to the water surface and therefore induce non-negligible changes in the wave system, thus influencing the wave making resistance of a sailboat. The bulb could pr... K Hochkirch,C Fassardi 被引量: 6发表: 2007年 Optim...
A related bit of physics: sailing upwind ≡ sailing directly downwind, faster than the wind. A physics lesson without words. Explain what you see. How sure are you? How do you know? An analysis of clocks that use pulses of light to keep time. A special relativity puzzle, involving ...
my understanding is that the lift should be proportional to the speed of the air over the foil. That would imply that sailing upwind should be faster, since the apparent wind is greater when sailing against the true wind. At the same time, if one sails into the eye of the wind, the ...
43 24K sailing-upwind-downwind.htm 2-Feb-2023 11:43 21K sampling-intro.htm 2-Feb-2023 11:43 219K sampling-intro.pdf 2-Feb-2023 11:43 601K scaling.htm 1-Aug-2023 21:48 184K schroeder-thermal.htm 14-Dec-2021 23:54 16K scientific-methods.htm 24-Apr-2024 19:54 153K secchi-disk....
Obviously, when sailing to windward we are trying to reach a destination upwind, and any sideslipping that pushes us downwind is undesirable. The slower the velocity of the fluid flowing past the ‘airfoil,’ the less efficiency it has as a lifting surface. So when the boat is going slowly...
September 9, 2007 at 7:41 am | Posted inphysics,sailing|Leave a comment WB-Sails Ltd: Good windtunnel movies showing seperation. Both the jib and the mail should be eased out to rettach the airflow http://www.wb-sails.fi/news/99_4_WindTunnelMovies/Movies.htm# ...