Photos of China’s J-20 stealth fighter jet clearly seen using the new WS-15 engine have been widely circulated.

Despite the obstacles in making this local engine, it seems that this is now starting to be resolved. The WS-15 engine was made to replace the old WS-10 engine.

The WS-15 provides higher thrust and supercruise capability , allowing the J-20 to maintain supersonic speeds without using afterburners, significantly improving fuel efficiency.

Reports suggest the engine has been produced in larger numbers and integrated into the operational J-20A aircraft of the Chinese People's Liberation Army Air Force (PLAAF).

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