The most terrifying people in this world are “very active idiots.” They know nothing, yet they actively participate in and try to dominate all kinds of things.
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In 2012, the FC-31 prototype (31001) fighter jet made its maiden flight. It is a purely export-oriented 5th-generation fighter jet project initiated independently by SAC, using Russian RD-93 engines.
In 2014, the PLA became involved in the FC-31 project and officially assigned the FC-31 fighter jet the PLA's internal code name “J-31.” The code name “J-31” first appeared on the PLA's official news website.
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However, at that time, the FC-31/J-31 (Ver 1.0) could not meet the PLA's requirements. As a result, SAC made significant improvements to the FC-31/J-31.
In 2016, the FC-31 Ver 2.0 successfully completed its maiden flight.
In 2020, the FC-31 Ver 3.0 successfully completed its maiden flight.
In 2022, a fighter jet with the serial number 350003 was unveiled. This signifies that the PLA has renamed the FC-31/J-31 to J-35. It also indicates that this fighter jet has undergone a complete transformation.
The J-31 fighter jet uses the RD-93/WS-13 series engine. (This project has been upgraded to the J-35 project.)
The J-35 fighter jet uses the WS-21 series engine.
The J-35A fighter jet uses the WS-19 series engine. ------ Since the AECC refused to export WS-19, the J-35AE does not exist.
FC-31 is the general term for the export versions of this series of fighter jets. The current FC-31 fighter jet is equivalent to the export version of the PLA's J-35 fighter jet.