Mikoyan-Gurevich I-211
The Mikoyan-Gurevich I-211 was a prototype high-altitude Soviet fighter aircraft built during World War II. It was a version of the Mikoyan-Gurevich I-210, itself a variant of the Mikoyan-Gurevich MiG-3, fitted with a Shvetsov ASh-82F radial engine. Its development was quite prolonged, although successful, but by the time it finished its manufacturer's trials in early 1944 there was no need for a high-altitude fighter and it was not worth reducing the production of existing fighters to convert a factory over to the I-211.