AL-51F has been flight tested since 2017.
CasualObserver Junior Member Registered Member Dec 23, 2025 #3,472 sunnymaxi said: i think that 2021 pic should be AL-51 but with 177S nozzle, later on they put the same nozzle on newly developed 177S as AL-51 switched to hexagonal nozzle. 177S was first publicly introduced last year at Zhuhai air show. Click to expand... Via the Sukhoi guy:
sunnymaxi said: i think that 2021 pic should be AL-51 but with 177S nozzle, later on they put the same nozzle on newly developed 177S as AL-51 switched to hexagonal nozzle. 177S was first publicly introduced last year at Zhuhai air show. Click to expand... Via the Sukhoi guy:
I iBBz Junior Member Registered Member Dec 24, 2025 #3,473 RT News: Su-57 fighter jet is getting a major upgrade Please, Log in or Register to view URLs content!
RT News: Su-57 fighter jet is getting a major upgrade Please, Log in or Register to view URLs content!
