Russia Begins Flight Tests of New Engine on Su-57 Fighter Aviation News – Russia has begun flight testing a new engine on its Sukhoi Su-57 fifth-generation fighter, marking a step toward more powerful and efficient propulsion for future variants of the aircraft. The test flight was confirmed on December 22, 2025, by Russia’s state-owned defense conglomerate Rostec. According to the company, the Su-57 flew for the first time with the new “Product 177” engine, a fifth-generation powerplant developed specifically for advanced combat aircraft, with test pilot Roman Kondratyev at the controls.

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First Flight of Russian Su-57 Fighter with Fifth-generation Engine “Product 177” New powerplant begins flight trials as Russia moves to upgrade Su-57 performance and expand production

First Flight of Russian Su-57 Fighter with Fifth-generation Engine “Product 177”

defensemirror.com/news/40750/F...

#Russia #Su57 #FifthGenerationFighter #Product177 #RussianAerospace #Rostec #UnitedAircraftCorporation #UnitedEngineCorporation #MilitaryAviation #JetEngine

First Flight of Russian Su-57 Fighter with Fifth-generation Engine “Product 177” New powerplant begins flight trials as Russia moves to upgrade Su-57 performance and expand production

First Flight of Russian Su-57 Fighter with Fifth-generation Engine “Product 177”

defensemirror.com/news/40750/F...

#Russia #Su57 #FifthGenerationFighter #Product177 #RussianAerospace #Rostec #UnitedAircraftCorporation #UnitedEngineCorporation #MilitaryAviation #JetEngine

First Flight of Russian Su-57 Fighter with Fifth-generation Engine “Product 177” New powerplant begins flight trials as Russia moves to upgrade Su-57 performance and expand production

First Flight of Russian Su-57 Fighter with Fifth-generation Engine “Product 177”

defensemirror.com/news/40750/F...

#Russia #Su57 #FifthGenerationFighter #Product177 #RussianAerospace #Rostec #UnitedAircraftCorporation #UnitedEngineCorporation #MilitaryAviation #JetEngine