Tupolev Tu-104 - Design and Development

Design and Development

At the beginning of the 1950s, the Soviet Union's Aeroflot airline needed a modern airliner with better capacity and performance than the piston engined aircraft then in operation. The design request was filled by the Tupolev OKB, which based their new airliner on its Tu-16 'Badger' strategic bomber. The wings, engines, and tail surfaces of the Tu-16 were retained in the airliner, but the new design adopted a wider, pressurised fuselage designed to accommodate 50 passengers. The prototype (SSSR-L5400) first flew on June 17, 1955 with Yu.L. Alasheyev at the controls at Kharkov plant in Ukraine. It was fitted with drag chute to shorten landing distance by up to 400 metres (1,300 ft).

The arrival of the Tu-104 in London during a 1956 state visit by Nikolai Bulganin and Nikita Khrushchev totally surprised Western observers who, at the time, thought the Soviets lacked the advanced technology required to build a commercial airliner with such performance. By the time production ceased in 1960, about 200 had been built.

The Tu-104 was powered by two Mikulin AM-3 turbojets placed at the wing/fuselage junction (similar to the de Havilland Comet). The crew consisted of 5 people: two pilots, a navigator (placed in the glazed "bomber" nose), a flight engineer and a radio operator (the radio operator was later eliminated). The airplane raised great curiosity by its lavish "Victorian" interior – called so by some Western-hemisphere observers – due to the materials used: mahogany, copper and lace.

Tu-104 pilots were trained on the Il-28 bomber, followed by mail flights on an unarmed Tu-16 bomber painted in Aeroflot colors, between Moscow and Sverdlovsk. Pilots with previous Tu-16 experience transitioned into the Tu-104 with relative ease. The Tu-104 was considered tricky to fly, as it was heavy in the air, and had poor response to controls, with a tendency to stall at low speeds. Experience with the Tu-104 led the Tupolev Design Bureau to develop the Tupolev Tu-124, designed for local markets, and subsequently the more commercially successful Tu-134

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