Military Hardware: Tanks, Bombers, Submarines and More Russia’s Su-57 Felon Stealth Fighter Just Got the ‘Supercruise’ Engine It Always Needed Key Points and Summary – Russia is spotlighting the Su-57’s new 177S/AL-51F1 “fifth-generation” engine after its Dubai debut. -Early Su-57s flew with the 117S/AL-41F1,... Reuben JohnsonDecember 18, 2025