High Quality Content by WIKIPEDIA articles! A yard is a spar on a mast from which sails are set. It may be constructed of timber, steel, or from more modern materials, like aluminium or carbon fibre. Although some types of fore and aft rigs have yards, the term is usually used to describe the horizontal spars used with square sails. In addition, for some decades after square sails were generally dispensed with, some yards were retained for deploying wireless (radio) aerials and signal flags. To...
High Quality Content by WIKIPEDIA articles! A yard is a spar on a mast from which sails are set. It may be constructed of timber, steel, or from more modern materials, like aluminium or carbon fibre. Although some types of fore and aft rigs have yards, the term is usually used to describe the horizontal spars used with square sails. In addition, for some decades after square sails were generally dispensed with, some yards were retained for deploying wireless (radio) aerials and signal flags. To allow the direction of the vessel to be changed relative to the wind the yard can rotate around the mast. When running directly downwind the yards are 'squared', pointing perpendicular to the ship's centre line. As the ship is steered closer to the wind the yards are braced round using the braces. When further rotation is obstructed by other bits of rigging (typically the shrouds), the yard is said to be braced hard round. This angle (normally about 45 degrees) limits how close to the wind a square rigged ship can sail.
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Вместе с авторами этого издания читатель поучаствует в настоящей инвентаризации произведений искусства со всего мира. Книга состоит из десяти глав. Первый разворот каждой главы — краткая характеристика периода в истории искусств с древних времен и до современности, второй — импровизированная коллекция художественных артефактов эпохи. Это художники, картины, строения, скульптуры, явления,...
Издательство:
Ad Marginem
Дата выхода: декабрь 2018
В монографии изложены теоретические основы адаптации промышленных роботов для целей строительства. Рассмотрены технологические особенности строительных процессов и задачи их роботизации, сформулированы требования к роботизации строительных процессов и представлена структурная организация роботов и РТК для автоматизации строительных процессов. Описаны манипуляционные системы строительных...
Издательство:
Солон-Пресс
Дата выхода: декабрь 2018
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