The J-9 and J-13 were both early Chinese fighter development programs, similar in concept and role to the F-16. The distinction lay in their origins: the J-9 was developed by the 611 Institute (CAC), while the J-13 was developed by the 601 Institute (SAC). Ultimately, both projects were cancelled; however, some of their research and development findings were subsequently applied to the J-10 project.
The J-14—also known as the "Snowy Owl" fighter project(雪鸮战斗机项目)—represented the 601 Institute's (SAC) entry into the competition for China's fifth-generation fighter program, where it competed against the J-20 project developed by the 611 Institute (CAC). Ultimately, the 611 Institute's J-20 project was selected as the winner. The J-14 project was subsequently terminated, though some of its research and development findings were later utilized in the FC-31/J-35 project.
*To date, no official Chinese government or institutional body has ever publicly acknowledged the existence of the J-14 project. All information regarding it is derived from analyses and compilations of fragmented data gathered from various Chinese-language media sources.
Thanks, I know the older types pretty well and also the Snowy Owl, but I wasn't awaew it was called J-14.
Thanks again my friend!






