MiG-31 - the first Soviet combat aircraft of the fourth generation, which is currently on high-speed and high-altitude performance has no analogues in the world in its class
Analysis of open military programs leading countries suggests that in the world today is not in the next 10-15 years will not aviation system commensurate with the aircraft speed, rate of climb, the practical ceiling and other flight characteristics, as well as performance in a given range of its combat use.
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