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1 lut 2008 · Forces on a moving sailboat. (a) Sail and keel produce horizontal “lift” forces due to pressure differences from different wind and water speeds, respectively, on opposite surfaces. (b) The vector sum of lift forces from sail and keel forces determines the boat’s direction of motion (assuming there’s no rudder).
The force F D is the drag force exerted by the water on the keel and hull, due to the angle α the keel makes with the water streamlines. Using the same convention as before, F D is defined as parallel to the direction of flow of water V water. We can now sum all the forces acting on the sailboat.
Wind forces acting on a sailboat sail (L and D) and being transmitted to the boat (F R —propelling the boat forward—and F LAT —pushing the boat sideways), while close-hauled, are both components of total aerodynamic force (F T).
18 wrz 2024 · There are three forces involved in the wind that affects a sailboat (see Fig. 4). The true wind is the wind you would encounter if you were stationary, the boat wind is the wind caused by your boat moving forward, and the apparent wind is the combination of those two.
2 lip 2013 · The generated lift force has two components: one lifting the sailboat forward, and another responsible for the sailboat to drift downwind. The keel acts like a symmetric wing moving through the water at an angle of attack because of the downwind drifting due to the mainsail.
This is the force that helps propel a sailboat forward while in the water, which is essentially the acceleration of a sailboat cutting through the water. Combine this forward acceleration with the weight of sailboat and you get Newton’s famous second law of motion F=ma.
The SAIL in the wind acts as an AIRFOIL and the HULL in the water acts as a HYDROFOIL, so there are two sets of forces acting on a sailboat: AERODYNAMIC and HYDRODYNAMIC AERODYNAMIC FORCES (insert aerodyn forces )
