Sukhoi su 57 vs f 22 raptor - wholevol

But the current engines are only temporary a second stage version of the PAK-FA is expected to be powered by a new engine called the izdeliye 30, which should enter service in the mid-2020s. The engine, which runs far hotter than the original AL-31 engines from which they were originally derived, is not proving to be as reliable as initially hoped. Right now, the answer is no-the initial inte