After exceeding the speed limit of a thousand kilometers on a MiG-15 fighter (I-310, C) in 1948, the OKB-155, led by chief designer AI Mikoyan, together with CAGI specialists, almost immediately outlined measures to further increase it. As early as July 26, 1949, a prototype MiG-17 fighter (I-330, SI) ascended into the air.
At the beginning of 1943, the command of the Soviet Air Force became clear that the Ilyushin Il-2 fighters would soon need to be replaced by a far more powerful type. Because fighters providing direct air support to the fighting units were irreplaceable in the tactics used by Soviet troops, in May 1943 J.V. Stalin issued an order to design an aircraft that could replace the type of Il-2 in the armament of the Front Air Force.