Mach 2.0 but not the most powerful according to Grok:
The claim that the WS-21 is the world’s most powerful jet engine is false. Its thrust of 93.2 kN is lower than the F135 (191 kN) and WS-15 (180 kN), and even the WS-19 (116 kN) for the J-35. Mach rings, seen in the J-35A’s exhaust, indicate supersonic exhaust from afterburners, common in many jets like the F-22 or MiG-21, not necessarily high power. They show high-speed operation, not superior thrust. Engine power varies by aircraft role, but the WS-21 doesn’t top global rankings.
This aircraft took on no takers at Paris after its show, no countries pilot’s would dare to take it on. This will kick the ass of any other plane of its class all day long. The flight demonstration at Paris was both breathtaking and frightening.
But…but…we have GI Jane and her F-35. What could possibly go wrong?