Abstract The present research examines the first confirmed flight of the Su-57 fifth-generation multirole combat aircraft equipped with the Izdeliye 177 powerplant, situating this event within the longer arc of Russian Federation military-aerospace propulsion development, contemporary great-power air combat doctrine, and the structural constraints shaping post-Cold War defense-industrial ecosystems. The purpose is to determine what … Leggi tutto Su-57 with Izdeliye 177: Engine Transition and Airpower Balance in 2025