I though WS-21 already in service for years? what's the different between this version and the one they use for FC-31?
Chinese Engine Development
- Thread starter jackbh
- Start date
Probably not "in service" per se but "finished development" or "very mature" since no PLA jets in FOC service use the WS-13 series. The JF-17 does, but it's technically not the PLA + it's just the base WS-13.
IIRC the WS-13E was actually pretty old and was installed on the FC-31V2s. The WS-21 to the WS-13E is basically the WS-10C to the WS-10B.
What's the intended user for WS-21? Export version of FC-31? New engine for JF-17?
Yes and maybe. No way they're exporting the WS-19, plus the WS-21 is a fairly mature product. I'm not sure about its compatibility with the JF-17 though.
its WS-19 Engine
its WS-19 Engine
don't need to confuse.
WS-21 has long passed this pre-production stage and already in production. where it is used on J-35 and J-35A.
in 2022, 10th Annual China Aerospace propulsion technology forum, chief designer of WS-19, first time confirmed the existence of WS-21 and used in J-35 fighter jet.
AECC 2025 new year speech on Weibo, they have confirmed, J-35A have Chinese heart.
WS-21 basically passed that pre-production stage long ago.. so it is definitely related with WS-19 engine since Guizhou/Guiyang is the responsible of WS-19 development.
Hswz of zhihu. Unfortunately I don't know how to post the link from zhihu app.
Nvm. Here the link
Well, it's Chinese Quora.
Besides, it sounds like the model was extrapolated. Nowhere did the text mention WS-21.
yes. they didn't mention any Engine model name.. it is the Author himself, he mentioned WS-21 engines.. hmm