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Aviation of World War II |
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UTB-2Training BomberSukhoy![]()
Work on the aircraft, which received the designation UTB, or UTB-2, among aviation wits - "neither Tu nor Su", began in February 1946. In early June, the alteration of the aircraft was completed. On June 12, the test team of plant No.134 consisted of: test pilot N.D.Fixon, navigator V.I.Furdetsky, lead engineer F.M.Fisun, flight mechanic P.V. Zadneprovsky began testing the aircraft. At the conclusion of the Act, based on the results of state tests, it was noted that: "... 1. An experienced Training Bomber UTV... in terms of its flight tactical data and the amount of equipment meets the requirements and can be adopted by the Air Force for training cadets-pilots and navigators in flight and navigation Air Force schools, as well as for training the flight personnel of combat units of bomber aviation ... " At the beginning of May 1947, factory No.381 completed the construction of the lead serial aircraft UTB No.3810001 with some changes in the design. On May 7, 1947, the crew of N.K. Fedorov began flying under the factory test program, which ended on May 14. In the conclusions of the test report, it was noted that: "...Basic flight data ... meet the TTT of the Air Force of the Armed Forces ..." In July-August 1947, UTB-2 aircraft of the head series (No. 3810004, 3810005) passed control tests at the State Research Institute of the Air Force. These aircraft did not have cockpit lighting equipment, they did not have RPKO-2B radio semi-compasses, RV-2 radio altimeters and AV-52 airborne sights. Based on the results of the control tests, an act was drawn up, in the conclusion of which it was noted: "1. Aircraft UTB 004 and 005 passed the control tests ..." December 1947 arrived. Despite a lot of work on the reorganization of production, plant No.381 disrupted the plan for the supply of UTB-2 aircraft to the Air Force, instead of 120 copies, only 35 aircraft were handed over. However, the plant No.381 was not particularly guilty of this, because. Having transferred 31 Tu-2 aircraft for rework, Plant No.23 did not subsequently ensure the supply of units of unchangeable parts of the Tu-2. In addition, by the end of 1947, the Air Force handed over to the plant No.381 only 18 early series Tu-2 aircraft. In February 1948, the UTB-2 No.3810510 aircraft, equipped with an experimental altimeter RV-2 and a modified scheme for switching on the RSI-6M radio receiver, successfully passed state tests at the State Research Institute of the Air Force. According to the results of the work of the plant No.381 for 1948, the percentage of the plan for the production of UTB-2 aircraft was 116%. In 1949, plant No.381, in parallel with the production of UTB-2 aircraft, began the production of MiG-15 fighters. During 1949, 25 UTB-2s and 75 MiG-15s were produced. And in 1950, plant No.381 merged into plant No.30. In connection with the cessation of production of UTB-2 aircraft, Tu-2 aircraft equipped with dual control began to be used in the combat units of the Air Force. * - experimental 7-cylinder air-cooled engine ASh-21 (chief designer V.S. Nitchenko) manufactured by plant No.29, created on the basis of the 14-cylinder engine ASh-82FN. |
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