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Tupolev ANT-2
The ANT-2 was Tupolev OKB's first all-metal aircraft. It had a two-passenger capacity.
== Background ==
AN Tupolev saw the practicality of metal used in aircraft. Light metal alloys were more durable than wood and held up better in the severe Russian winters. Because of this, a special commission, founded on 21 October 1922, was established at TsAGI, and after Tupolev died, bore his name. It was headed by him, and the first assignment was to establish facilities to produce aircraft. A factory was already selected in Kolchuginsk, located in the Vladimir region, approximately 121 km (75 mi) from Moscow. There, a high-grade alloy was made, which was named Kolchugaluminum. The first ingots of the new alloy were produced in September 1922. For this reason, a commission was established with an order to start working on all-metal aircraft, and to figure out ways to test the metals' strengths. Tupolev created a design bureau inside TsAGI. It had fifteen engineers, technicians, and draftsmen, and the first components made were used to train craftsmen in the new materials.
The creation of duraluminum was regarded by Tupolev as the Soviet Union's aviation industry's birth. Along with the problem of building crafts skills were the problems of the need for acquiring the skills to make alloy products. This gave Tupolev, TsAGI, and the factory in Kolchuginsk a fair share of work. There was a need to find the answers to all of these problems. Fortunately for them, they finally developed methods for developing alloys. Their techniques were different from the leader in that industry Junkers, but were just as or even more effective. Tupolev now had the confidence to build an all-metal aircraft. He eventually was known for making huge headway without taking large risks, so he trod with great caution while working on this new adventure to make the aircraft. He made a few trials on his with the new materials on aerosleighs, boats, and gliders before he was satisfied that it was safe to move forward.
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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