Physics of Sailing

The hull is a frame where the hull and the crew float on the water. The mast is a high pole arranged vertically near the center of the hull and is attached to the sail to maintain the suspension and straight line. The boom is a large bar attached to the bottom of the mast, and it can rotate up, down, left and right. The sail is attached to the boom and the mast, and the person controlling the main sail moves the boom to change the direction and tension of the main sail.

Naval physics arises from the balance of the yacht supplying the wind through the yacht and the resistance of the yacht against the blow course, the hull is provided underwater by keel, ladder, underwater foil and other components on the ice. A runner on a boat is on land with a wheel of a land vehicle moving on ice or on land. Sail force depends on wind speed and direction, and speed and direction of the aircraft. The speed of the aircraft at a given navigation point contributes to the "apparent wind", ie the wind speed and direction measured on the moving aircraft. The apparent wind on the sail creates a total aerodynamic force that can be divided into resistances - the force component in the direction of the wind - and the lift force component is perpendicular to the obvious wind (90 °)

Traditional yachts can not be moved with a sail near the wind sailing point. At a given navigation point, seamen adjust the direction of each voyage to the direction of the apparent wind (as perceived by the spacecraft) and mobilize the force of the wind. The force transmitted by the yacht comes from the yacht's hull, the strength of the keel and ladder, the strength of the skater from the ice boat, or the force of the wheel from the land boat to enable maneuvering

Because of their ability to generate lift (and the ability of the aircraft to resist the resulting transverse forces), Sail allows the yacht to go into the wind. Each sail configuration has a characteristic lift coefficient and an associated drag coefficient that can be experimentally determined and theoretically calculated. Even if their route changes, the yacht will direct their sails at a favorable angle of attack between the entrance of the sail and the apparent wind. If there is a possibility of generating lift (producing variable amplitude) and there is no effective angle of attack sufficiently away from the wind, the sail can not be directed to the preferred angle of attack to prevent navigation and lift is generated The ability is limited by sailing too close to the wind. Stall by separation of flow