Mikoyan-Gurevich MiG-7

MiG-3
A restored MiG-3 at an air show.
Role	Fighter and interceptor aircraft
National origin	Soviet Union
Manufacturer	Mikoyan-Gurevich
First flight	29 October 1940
Introduction	1941
Retired	1945
Primary user	Soviet Air Forces (VVS) Soviet Air Defence Forces (PVO) Soviet Naval Aviation
Produced	1940–41
Number built	3,422
Developed from	Mikoyan-Gurevich MiG-1
Variants	Mikoyan-Gurevich I-211

The Mikoyan-Gurevich MiG-3 (Russian: Микоян и Гуревич МиГ-3) was a Soviet fighter and interceptor aircraft used during World War II. It was a development of the MiG-1 by the OKO (opytno-konstruktorskij otdel — Experimental Design Department) of Zavod (Factory) No. 1 to remedy problems found during the MiG-1's development and operations. It replaced the MiG-1 on the production line at Factory No. 1 on 20 December 1940 and was built in large numbers during 1941 before Factory No. 1 was converted to build the Ilyushin Il-2.

On 22 June 1941, at the beginning of Operation Barbarossa, some 981 were in service with the Soviet Air Forces (VVS), the Soviet Air Defence Forces (PVO) and Soviet Naval Aviation. The MiG-3 was difficult to fly in peacetime and much more so in combat. It had been designed for high-altitude combat but combat over the Eastern Front was generally at lower altitudes, where it was inferior to the German Messerschmitt Bf 109 as well as most of its Soviet contemporaries. It was also pressed into service as a fighter-bomber during the autumn of 1941 but it was equally unsuited for this. Over time, the survivors were concentrated in the PVO, where its disadvantages mattered less, the last being withdrawn from service before the end of the war.

The large number of defects noted during flight testing of the MiG-1 forced Mikoyan and Gurevich to make a number of modifications to the design. Testing was done on a full-size aircraft in the T-1 wind tunnel belonging to the Central Aero and Hydrodynamics Institute (TsAGI) to evaluate the problems and their proposed solutions. The first aircraft to see all of these changes applied was the fourth prototype of the I-200. It first flew on 29 October 1940 and was approved for production after passing its State acceptance trials. The first MiG-3, as the improved aircraft was named on 9 December, was completed on 20 December 1940 and another 20 were delivered by the end of the year.

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