The Klimov GTD-350 (initially Isotov GTD-350 ) is a Soviet gas-turbine turboshaft engine intended for helicopter use. Designed in the early 1960s by the Isotov Design Bureau the engine was later produced by Klimov and PZL , production ending in the late 1990s.
6-541: The GTD-350 powers the Mil Mi-2 , the first Soviet gas-turbine powered helicopter, and has accumulated over 20 million hours in service. Data from Klimov, World Encyclopaedia of Aero Engines, Aircraft engines of the World 1970 Comparable engines Related lists Mil Mi-2 The Mil Mi-2 ( NATO reporting name Hoplite ) is a small, three rotor blade Soviet -designed multi-purpose helicopter developed by
12-763: The Mil Moscow Helicopter Plant , designed in the early 1960s and produced exclusively by WSK "PZL-Świdnik" in Poland. Nearly 5500 were made by the time production stopped in 1999, and it remains in service globally. The Mi-2 was produced exclusively in Poland , in the WSK PZL-Świdnik factory in Świdnik . The first production helicopter in the Soviet Union was the Mil Mi-1 , modelled along
18-597: The Mi-1's piston engines, for barely half the engine weight, with the result that the payload was more than doubled. The Mi-2 fuselage was extensively altered from its predecessor, with the engines mounted overhead. However, the external dimensions remained similar. The Mil-built prototype first flew in the Soviet Union on 22 September 1961, after the initial development the project was transferred to Poland in 1964. The first Świdnik-built example flew on 4 November 1965; this
24-640: The lines of the S-51 and Bristol Sycamore and flown by Mikhail Mil 's bureau in September 1948. During the 1950s it became evident, and confirmed by American and French development, that helicopters could be greatly improved with turbine engines . S. P. Isotov developed the GTD-350 engine and Mil used two of these in the far superior Mi-2. The twin shaft-turbine engines used in the Mi-2 develop 40% more power than
30-493: Was first introduced into the Soviet Air Force in 1965 . The Mi-2 is used by mainly former Soviet and Eastern Bloc countries, although it was also purchased by the armed forces of Mexico and Myanmar . Most of the armed Mi-2 variants were used by Poland . Some were also used by the former East Germany (with 7.62 mm machine gun and 57 mm unguided rocket armament only). North Korea still maintains
36-697: Was the only Soviet-designed helicopter to be built solely outside the Soviet Union. PZL-Świdnik produced a total of 5,497 helicopters, about a third for military users. The factory also developed fiberglass rotor blades, and developed the wide-body Mi-2M seating 10 passengers instead of eight. Most typical role-change kits include four stretchers for air ambulance usage, or aerospraying or cropdusting applications. In Poland, several specialized military variants were also developed in early 1970s for support or training roles, with 23 mm autocannon , machine guns and/or two 57 mm rocket pods, four 9K11 Malyutka anti-tank missiles or Strela-2 AA missiles. The Mi-2
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