A veil is a piece of fabric, which can vary in size from a few square meters to several hundred square meters, which, thanks to wind, is used to move a vessel. Sails are used on sailboats, windsurfers, but also on land vehicles (Key West sail and snorkel). A veil is mainly characterized by its shape, weight, and (s) material (s) which it is composed.
The three angles of sails (a triangular sails) have a specific name: The head point is the angle at the top of web once hoisted it: this is where the halyard is hit. The tack denotes the angle attached tofixed point of boat: when sails is in position, the tack is on the front of boat. The clew refers to angle of sails which was struck listening (jib) or near which rose listening (mainsails)
To improve the performance sailboats, speedboats architects also influence the shape of mast (wing masts) to further improve these flows. Resembling the close, sailing has a propulsive force as its angle relative to apparent wind is still large enough (about twenty degrees). This has the consequence that it is possible with a vehicle with a low resistance to progress, to go faster than the true wind. This is the case for example windsurfers, multihulls, mono hulls designed some of Planing and tanks to sails. Craft being the fastest sailing ice tanks capable of reaching four to five times the speed of wind.
The force exerted by wind on sails is roughly perpendicular to chord of sails plan. The component of force which is parallel to axis of vessel is the propulsive force. The other component, perpendicular to axis of vessel tends to cause it to drift, but can also cause property (band) (the ship leans on its side), and can dangerously compromise its balance or capsize.
When the ship away from the wind, the flow along sails can "win." The wind literally pushes sails. To obtain maximum propulsion, it is then necessary to orient the web so as to be differently perpendicular to axis of wind. It should also set sails so that it is as hollow as possible. Extremely hollow sails were designed for this purpose, such as spinnakers (or "spinnakers") or gennaker.
If the boat downwind, speed tends to reduce the apparent wind. Thus, contrary to intuition, this rate is not faster because it is not possible to go faster than the true wind. The fastest way to get to a point downwind way is then sometimes tacking in a direction slightly away from the axis of wind (broad reach), which increases the apparent wind. Downwind, the wind on sails tends to push the front of boat.
The maximum angle of deflection that can obtain is equal to angle of incidence of wind relative to axis of vessel. It is against-productive effect of sails border beyond the axis of vessel. The actual angle of deflection depends on the ability of air to follow the profile of sails. If the radius of curve is too short to follow the depression on the upper surface becomes too strong, and the air picks (tends to take the wind direction).
Ideally, therefore, a web has a curved profile, the profile being in front of axis of wind, and the back of profile in axis of vessel. The distance between the leading edge and the trailing edge should be as short as possible to reduce friction (drag), while being long enough to distribute the vacuum. Depression is much stronger that the forced air flow direction deviates from the axis of wind. We can therefore provide for a higher radius of curvature at the front of profile backwards. This results in an asymptotic optimal profile, where in hollow is located in first third of profile.
The three angles of sails (a triangular sails) have a specific name: The head point is the angle at the top of web once hoisted it: this is where the halyard is hit. The tack denotes the angle attached tofixed point of boat: when sails is in position, the tack is on the front of boat. The clew refers to angle of sails which was struck listening (jib) or near which rose listening (mainsails)
To improve the performance sailboats, speedboats architects also influence the shape of mast (wing masts) to further improve these flows. Resembling the close, sailing has a propulsive force as its angle relative to apparent wind is still large enough (about twenty degrees). This has the consequence that it is possible with a vehicle with a low resistance to progress, to go faster than the true wind. This is the case for example windsurfers, multihulls, mono hulls designed some of Planing and tanks to sails. Craft being the fastest sailing ice tanks capable of reaching four to five times the speed of wind.
The force exerted by wind on sails is roughly perpendicular to chord of sails plan. The component of force which is parallel to axis of vessel is the propulsive force. The other component, perpendicular to axis of vessel tends to cause it to drift, but can also cause property (band) (the ship leans on its side), and can dangerously compromise its balance or capsize.
When the ship away from the wind, the flow along sails can "win." The wind literally pushes sails. To obtain maximum propulsion, it is then necessary to orient the web so as to be differently perpendicular to axis of wind. It should also set sails so that it is as hollow as possible. Extremely hollow sails were designed for this purpose, such as spinnakers (or "spinnakers") or gennaker.
If the boat downwind, speed tends to reduce the apparent wind. Thus, contrary to intuition, this rate is not faster because it is not possible to go faster than the true wind. The fastest way to get to a point downwind way is then sometimes tacking in a direction slightly away from the axis of wind (broad reach), which increases the apparent wind. Downwind, the wind on sails tends to push the front of boat.
The maximum angle of deflection that can obtain is equal to angle of incidence of wind relative to axis of vessel. It is against-productive effect of sails border beyond the axis of vessel. The actual angle of deflection depends on the ability of air to follow the profile of sails. If the radius of curve is too short to follow the depression on the upper surface becomes too strong, and the air picks (tends to take the wind direction).
Ideally, therefore, a web has a curved profile, the profile being in front of axis of wind, and the back of profile in axis of vessel. The distance between the leading edge and the trailing edge should be as short as possible to reduce friction (drag), while being long enough to distribute the vacuum. Depression is much stronger that the forced air flow direction deviates from the axis of wind. We can therefore provide for a higher radius of curvature at the front of profile backwards. This results in an asymptotic optimal profile, where in hollow is located in first third of profile.
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