Во, нашёл про пизду движкам МиГ-25
Цитата:
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MiG-25 pilots were warned never to exceed Mach 2.8; the MiG tracked at Mach 3.2 by Israel in 1971 essentially destroyed its engines in the process, and was lucky to return to base.
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Цитата:
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The MiG’s turbojets generated thrust by sucking in air to help burn the fuel. Above 2,000mph (3,200km/h), however, things started to go wrong. The sheer force of the air could overwhelm the fuel pumps, dumping more and more fuel into the engine. And at the same time, the force exerted by the compressors would be so huge it would start sucking up parts of the engine. The MiG would start eating itself.
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Из-за особенностей конструкции двигателя на скоростях около 3М движок начинал питаться сам собой.