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Solar sails are a method of spacecraft propulsion using radiation pressure exerted by sunlight on large mirrors. A number of spaceflight missions to test solar propulsion and navigation have been proposed since the 1980s. The first spacecraft to make use of the technology was IKAROS, launched in 2010.
A magnetic sail is a proposed method of spacecraft propulsion that uses a static magnetic field to deflect a plasma wind of charged particles radiated by the Sun or a Star thereby transferring momentum to accelerate or decelerate a spacecraft. Most approaches require little to no propellant and thus are a form of Field propulsion. A magnetic sail could also thrust against a planetary ionosphere or magnetosphere. Important use cases are: a modest force from the solar wind sustainable for a long period of time; deceleration in the interstellar medium and the plasma wind of a destination Star following interstellar travel at relativistic speeds achieved by some other means; and efficient deceleration in a planetary ionosphere. Plasma characteristics for the Solar wind, a planetary ionosphere and the interstellar medium and the specifics of the magnetic sail design determine achievable performance; such as, thrust, required power and mass.
A sail plan is a description of the specific ways that a sailing craft is rigged. Also, the term "sail plan" is a graphic depiction of the arrangement of the sails for a given sailing craft.
A barquentine or schooner barque is a sailing vessel with three or more masts; with a square rigged foremast and fore-and-aft rigged main, mizzen and any other masts.
Sailly-au-Bois is a commune in the Pas-de-Calais department in the Hauts-de-France region of France.
Sailly-en-Ostrevent is a commune in the Pas-de-Calais department in the Hauts-de-France region of France.
Sailly-Labourse is a commune in the Pas-de-Calais department in the Hauts-de-France region of France.
Sailly-sur-la-Lys is a commune in the Pas-de-Calais department in the Hauts-de-France region of France.
Sailly-lez-Lannoy is a commune in the Nord department in northern France. It is part of the Métropole Européenne de Lille.
Sailly is a commune in the Ardennes department in northern France.
Sailly-lez-Cambrai is a commune in the Nord department in northern France.
Sailly-Achâtel is a commune in the Moselle department in Grand Est in north-eastern France.
Sailly is a commune in the Saône-et-Loire department in the region of Bourgogne-Franche-Comté in eastern France.
Sailly-Flibeaucourt is a commune in the Somme department in Hauts-de-France in northern France.
Sailly-Laurette is a commune in the Somme department in Hauts-de-France in northern France.
Sailly-le-Sec is a commune in the Somme department in Hauts-de-France in northern France.
Small-craft sails are sails designed to be attached to watercraft not conventionally equipped with sails, such as kayaks, canoes, or dinghies. Depending upon wind conditions, they can augment the user's paddling or rowing effort, or replace it. They are suited to touring and other long-distance usage.
The Javelin is a high-performance skiff type dinghy sailed in Australia and New Zealand. The class was founded by designer John Spencer in 1961. Spencer also founded the Cherub Class. It is 14 feet long, sporting a large sail area, single trapeze and asymmetrical spinnaker. The Javelin is a development class, meaning that boats vary in shape within a framework of rules, rather than being all built to the same design. Bruce Farr is another well-known designer who drew successful Javelins.
The Topaz Taz is a sailing dinghy created by Topper International designed for between 1 or 2 children. The Taz is an ISAF ‘Learn to Sail’ class.
Bigiw is a small double-outrigger sailboat native to the islands of Mindanao, Visayas, and Palawan in the Philippines. It is used for personal transport or small-scale fishing and can hold one to three people. It is traditionally propelled by sails and steered with a single oar, but is commonly motorized in modern times. It can also be paddled. The sail type used is predominantly triangular crab claw sails, but it can also use spritsails or tanja sails.
References
- ↑ C. A. Marchaj (2003) [1996]. Sail Performance. Camden, Maine: International Marine/McGraw Hill. p. 4.
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