Technical data
Type I-220-1 I-220-2
Function Fighter
Year 1943
Crew 1
Engine AM-38F AM-39
Power 1500/1700hp 1500/1800hp
Length 9.5m
Wingspan 11.0m
Wing area 20.38m2
Empty weight 3014kg 3092kg
Loaded weight 3575kg 3647kg
Wing Load (kg/m2) 176 179
Power load (kg/hp) 2.1 2.03
Speed at 0m 572km/h 571km/h
Speed at 2000m 622km/h -
Speed at 2700m - 614km/h
Speed at 7800m - 697km/h
Range 730km 660km
Ceiling 9500m 11000m
Climb to 5000m 4.6min 4.5min
Armament
Guns 4*20mm ShVAK cannons

I-220, 'A' A.I.Mikoyan/M.I.Gurevich

15k b/w I-220 at "History of aircraft construction in the USSR", Vol.1 p.237;

The best possible results with MiG-3 airframe were achieved when the I-231 rolled out. But it was not enough to make a decision in favor of mass production. Progress of advanced high altitude fighter required to change the size of aircraft.

It was done in 1944, when the I-220 was built in two configuration - with AM-38F and AM-29 engines. Several novel construction elements were introduced: tunnel radiators inside of the wing, soft fuel tanks, lever wheel suspension. Armament was formidable - four 20mm ShVAK cannons (reload powered by engine exhaust gases), two of them could be easily removed for low-weight operation.

I-220 with AM-38F was tested in January 1944, and later re-engined with AM-39. The AM-38F engine was more suitable for low-level ground attacker, and high altitude performance was not that superior.

The second I-220 (with AM-39) was factory tested in July-August 1943 and came to the State Trials on June 14, 1944. Good high altitude performance was demonstrated, but tests were interrupted on June 21 when engine gave up.

Predecessor MiG-3
Development I-221

References:
Modified October 13, 1997 Back to
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