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Gordon: The New Science of Strong Materials

Скачать книгу (размер 1 462 Kb , формат fb2, страниц 288) Аннотация: Why isn't wood weaker that it is? Why isn't steel stronger? Why does glass sometimes shatter and sometimes bend like spring? Why do ships break in half? What is a liquid and is treacle one? All these are questions about the nature of materials. All of them are vital to engineers but also fascinating as scientific problems. During the 250 years up to the 1920s and 1930s they had been answered…

Gordon: OKB Yakovlev: A History of the Design Bureau and Its Aircraft

Скачать книгу (размер 1 625 Kb , формат fb2, страниц 320) Аннотация: The Yakovlev design bureau started life in 1927 when Aleksandr Sergeyevich Yakovlev (1894-1977) brought out his first aircraft, the two-seat AIR-1. The first nine designs created by Yakovlev remained in prototype form, being developed largely at his own initiative; in 1935, however, his fortune changed when the UT-2 primary trainer entered large-scale production. In the immediate pre-war years…