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J-20A with WS-15: Many others in hangars:

Prototype 2052, fitted with two WS-15 engines!

Mass production!

The two seater 2032 is now painted operational gray!

That particular picture is probably fake. The new prototype should be marked 2051 among a few other things.

Another! I like the change. Very sleek!

Latest on the new variant!

Drawing of the profile difference:

Aerodynamics:

Yes. Multiple news streams. Number 2012 flew with WS-15. Number 2051 is airframe change but flies with WS-10C.

It is bort number 2051. New prototype or initial serial batch? The J-20 line is rapid and flexible! We saw engine changes, two-seaters and now airframe revisions to the original single seater. Nothing stays still. It is a living breathing production line!

Revision similiar to that of the J-35 from FC-31.

Exciting stuff happening!!!

Redesigned airframe is coming for the J-20! Like J-10A to J-10B. This is possibly done is advance for WS-15!

Go here for more on the AVIC keynote address -- much more than just the WS-15 and J-20! It marks the state of China's engine industry and it is will be extremely intriguing and fun to look forward to...

Chinese materials science has reached a point that critical engine parts can last 50,000 hours compared to global standard of 20,000 hours!

2022 Keynote Report at China Aviation Industry Conference on Chinese aircraft engine development. It also states that the 4th Gen engine for J-20 has already done its maiden flight but not inducted yet.

WS-15 is a heavy engine -- 180kN ;) WS-19 is China's 110kN medium engine :)

David Wang already translated a synopsis on twitter ;)