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Tupolev A-3 Aerosledge
The Tupolev A-3 Aerosledge is an all-metal amphibious aerosledge, designed to transport passengers and light freight in remote areas of the Soviet Union. Officially known as the A-3 ''"Hope"'' (''"Nadezhda"'' in Russian), it uses a single pusher propeller mounted behind the enclosed cabin to propel the craft over snow or water.〔McLeavy, Roy, (1982). "Jane's Surface Skimmers", pp 65–67, London, England: Jane's Publishing Company Limited. ISBN 0-86720-614-4〕
==History==
Year-round transportation of mail, passengers, and light freight has always been a problem in remote areas of Siberia and Eastern Europe. Many communities are surrounded by deep snow, hummock ice, marshes that remain unfrozen, and natural waterways choked by weeds. The constantly changing conditions faced by these communities required the development of a vehicle capable of traveling over a widely varied surface at high speeds in order to deliver mail and supplies, as well to transport passengers, and provide emergency medical relief and evacuation to hospitals. To satisfy these requirements, the Tupolev Design Bureau developed an amphibious aerosledge with the appearance of a powered speedboat, and powered by a single radial engine mounted behind the cabin in a pusher position.〔 Development of the A-3 began in 1961, with the first production A-3 being delivered in 1964. Production of the A-3 continued until the early 1980s. Though early production A-3's were manufactured near Moscow, the majority of A-3 production took place in Ukraine, at the Tyachivski Transcarpathian helicopter plant. By the time production ceased in 1983 over 800 A-3 Aerosledges had been produced. Also Nikolay Kamov developed such like the Aerosled K30.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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