Design phase The MiG-1 was designed in response to a requirement for a high-altitude fighter with an inline engine issued by the
VVS in January 1939. Initially the aircraft, designated
I-200, was designed in the
Polikarpov construction bureau. Work started in June
1939, under the direction of
Nikolai Polikarpov and his assistant M. Tetivikin. Polikarpov himself preferred radial engines and promoted his
I-180 design at that time, but when the powerful
Mikulin AM-37 inline engine became available, he decided to use it in a fighter. The approach that he selected was to build the smallest possible aircraft around the intended powerplant, thereby minimizing weight and drag — the philosophy of the
light fighter. As specified, the aircraft was to be capable of reaching 670 km/h (417 mph). In August 1939, Polikarpov fell out of favor with
Joseph Stalin and as a result, when Polikarpov went in November 1939 to tour Germany's aviation works, the Soviet authorities decided to scatter his construction team and create a new Experimental Construction Section (OKO), headed by
Artem Mikoyan and
Mikhail Gurevich, which remained formally subordinated to the Polikarpov bureau until June 1940. Further work upon the I-200 design was assigned to Mikoyan and Gurevich, who later became recognized — not with full justice — as its designers. The MiG-1 was a low-wing monoplane with a
tailwheel undercarriage of mixed construction. Due to shortages of light alloys, the rear fuselage was made from wood, but the front fuselage, from the propeller to the rear of the cockpit, was a welded steel tube
truss covered by
duralumin. The bulk of the wing was wooden, but the center section was all-metal with a steel I-section main
spar. The wing used a
Clark YH profile. It was evenly tapered with rounded tips and the outer wing panels had 5° of
dihedral. All three landing gear wheels retracted hydraulically; the main units inwards into the wing center section. The cockpit was situated well aft, which seriously limited forward vision when landing and
taxiing. The AM-37 engine was not yet available and the less powerful V-12
Mikulin AM-35A had to be substituted. It had six exhaust ejectors, one for each pair of cylinders, that provided some additional thrust. It drove a VISh-22Ye
controllable-pitch propeller in diameter. The air intakes for the supercharger were in the wing roots and the oil cooler was on the port side of the engine cowling. The radiator was underneath the cockpit. Armament included two fuselage-mounted
ShKAS machine guns and one
UBS machine gun. The result was a highly conventional aircraft that first flew on schedule on 5 April 1940 at the
Khodynka Aerodrome in
Moscow with chief test pilot Arkadij Ekatov at the controls. On 24 May the first prototype attained a speed of 648.5 km/h (402.9 mph) at 6,900 m (22,638 ft). It could not, however, attain the speed originally specified by the Air Force with this engine. The second prototype took to the air on 9 May, but the third aircraft, the first to be armed, was forced to wait until 6 June, as problems with its
synchronization gear prolonged the ground firing tests. On 5 August was reached at using maximum boost. Time to altitude figures were 5.1 minutes to and 7.2 minutes to and speeds at lower altitudes were at and at . In contrast to the other competing designs, the I-26 (
Yak-1) and I-301 (
LaGG-3), the I-200 successfully completed the state trials in August on its first attempt. But the trials revealed a number of serious defects, including inadequate visibility when taxiing, poor-quality plexiglas in the canopy obscuring the pilot's view, heavy controls, poor longitudinal stability, difficulty in opening the canopy, an excessively hot cockpit and a "dangerous propensity to flick from a simple stall into a spin from which it was almost impossible to recover". A number of improvements were ordered to be made to the aircraft as a result of the deficiencies discovered during the trials, but only a few of them were able to be implemented before production began as the VVS was very anxious to get modern fighters into service. These included an additional air intake on the starboard side of the nose for the oil cooler, rubber sheaths around the fuel tanks to make them
self-sealing, two underwing bomb racks each capable of carrying a FAB-100 bomb, a PBP-1 gunsight and each ShKAS was given 375 rounds and the UBS 300 rounds. From the ninth aircraft onwards the side-opening canopy was replaced by a rear-sliding canopy that could be jettisoned in flight. On 9 December 1940 the first 100 I-200s were designated as the MiG-1 (after the initials of Mikoyan and Gurevich). The improvement process continued throughout the production run, though they were not immediately implemented in the production line, but were instead incorporated in a fourth prototype for evaluation. This aircraft first flew on 29 October 1940 and was a significant improvement over the I-200s then in production. It passed its State acceptance trials and its improvements were incorporated in the production line from the 101st I-200. These were designated as the
MiG-3 on 9 December, although the first production MiG-3 was not completed until 20 December 1940.
Additional testing The I-200 prototypes were used to evaluate a number of proposals. For example, the second prototype was fitted with a prototype of the AM-37 engine and first flew with that engine on 6 January 1941. It experienced severe vibration problems and, despite efforts to cure the problems, failed during a flight on 7 May, and was destroyed in the ensuing crash. The third prototype was generally used for armament trials, experimenting with
RS-82 rockets among other weapons. For another trial it was equipped with the experimental MP-3 autocannon carried underneath the wings in external pods and redesignated as the IP-201. The 12.7 mm UBS gun was removed for these tests and the space freed up was used to install an extra fuel tank. Initially the cannon had the low rate of fire of only 300 rounds per minute, but this was soon doubled and the gun was renamed the MP-6. Installation of the guns was difficult, despite the aircraft's metal outer wing panels, and the wings deformed when the cannon were first mounted. It made its first and only flight on 1 December 1940 carrying two MP-6s and two 12.7 mm AP-12.7 machine guns, but a blocked fuel line caused a forced landing before the guns could be fired. Testing on a variety of other aircraft revealed very unsatisfactory performance from the guns and their development was canceled. The designers were arrested on 15 May 1941 and executed on 28 October 1941. ==Operational history==