Touted as a rival to American stealth jets, Russia’s Su-57 has been mired in delays, design flaws, and economic hurdles. While it showcases next-gen radar and maneuverability, its stealth performance ...

TASS/. Russia’s Su-57 fifth-generation stealth air superiority fighter, also known as T-50, had performed its first test flight with a new-generation engine, a source in the Russian Industry and ...