Countries developed Fighter Jets with foreign Engine
CHINA .... 2011-2021 ( J-20 used Russian Engine )
The J-20 conducted its maiden flight in 2011, powered by imported Russian Engine ( Saturn AL-31F )
Between 2011 and 2015, China built several technology demonstrators and prototypes using Russian AL-31F series Engines
All initial mass production batches of the J-20 entering service in 2017 still heavily relied on these Russian Engine
in 2021 , The Russian Engines were completely replaced on the assembly lines by the domestic WS-10C Engine
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S.KOREA
The KF-21 conducted its maiden flight in 2022, powered by imported American Engine ( F414-GE-400K )
in 2026 , KAI officially rolled out the first mass-produced KF-21 Block I with American Engine
S.Korea has started developing 24.000 lbs indigenous turbofan Engine to power the KF-21 in 2040
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TURKIYE
The KAAN conducted its maiden flight in 2024, powered by imported American Engine ( F110-GE-129 )
Initial mass production batches of the KAAN Block-10 entering service in 2028-2030 period will be powered by American Engine
Turkiye has started developing 35.000 lbs TF-35.000 indigenous turbofan Engine to power the KAAN in 2033-2035 period
Like the early phases of China’s J-20, the KAAN relies on a proven Engine for first flight and initial mass production while its domestic alternative undergoes development.