they were both from the nikolai polikarpov design bureau, who was... both deservedly called the kingof fighters. in 1939, they were given the polikarpov i-200 for modification, it was planned as a mass fighter with a speed of over 600 km/h, which at that time was simply an enormous speed, that is, the first high-speed fighter of the soviet union, so it received a new powerful am35 engine, which gave it a characteristic astro-nosed appearance, strongly. in general, one can say, it took root, pilots got used to it, highly valued its characteristic speed qualities, fighter maneuverability, gradually eliminated shortcomings, defects, the aircraft's armament was strengthened, to two shkaz machine guns of caliber 762 and one large-caliber bs of caliber 12.7 they added - a large-caliber bk, which were installed under the wings, here they were visible, here under the wings. they put two more machine guns, during the first battles the main drawback of the mi-3 was especially clearly manifested - this is the lack of armor glass in the cockpit cap, well, naturally, the losses were quite large,