Mikoyan-Gurevich I-250
The Mikoyan-Gurevich MiG -13 (Russian Микоян - Гуревич МиГ -13, also known as I- 250, Project N or MiG -7 called ) was a Soviet fighter aircraft. It was designed by the Mikoyan-Gurevich design bureau and featured a mixed propulsion, consisting of a piston motor and a Cholschtschewnikow accelerator.
Development
In addition to the conventional piston engine developed in a ZIAM Cholschtschewnikow accelerator in the rear fuselage from 1943 served as a slave drive. In order to achieve low air resistance, the wing is designed very thin. The MiG -13 was created as a parallel development to the Sukhoi Su -5, which was also an aircraft with mixed drive.
The first project studies began in the summer of 1944, the first prototype was controlled by A. P. Dejew and first flew on March 3, 1945. Was built, a second, which had a slightly different chassis and tail.
It was decided that instead of the Su -5 to give the MiG -13 in series production, but only in a small number of pieces, as they had recognized the advantages of the pure jet propulsion. From 1945 to 1946 about 50 series machines were produced which differed from the prototypes, particularly by eliminating the fin under the stern. They flew until 1950 when the Soviet Navy as coastal surveillance aircraft in the Baltic and the North Sea.
The abbreviation MiG- 13 was first used in 1981 by official Soviet authorities; before all series machines were called MiG -7, the prototypes as I- 250 or N, the N is Novyi (new ) position.
Technical Description
The MiG -13 was a low -wing monoplane of all-metal construction with an oval fuselage cross-section. The thruster is located at the rear and is supplied together with the piston engine via a common inlet in the nose cone with air. The wings in trapezoidal shape have a slightly positive V-shape, the tail is carried in normal construction. The landing gear is fully retractable, with the main wheels retract inwards.