|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|
|Climb to 5000m||4.6min||4.5min|
|Guns||4*20mm ShVAK cannons|
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.
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.
|Modified October 13, 1997||Back to|