J-20 5th Gen Fighter Thread VIII

Tomboy

Junior Member
Registered Member
We quite literally have no solid idea. If I had to hazard a guess, it would be something similar to this F110 roadmap from GE (reasonable too since the WS-10 family has a linage that can be traced to the F110):
View attachment 155703
I'd (conservatively) expect the WS-10C2 to be at or above F110-GE-134 (listed as the F110-GE-129EFE+ above) in terms of thrust rating. But a bolder estimate would be that the WS-10C itself already is at that level (150+ kN ish), and the WS-10C2 being an equivalent of the fully realised WS-15 pre-revamp (170-175 kN).

It is completely within the realm of possibility though, that the WS-10C2 represents an overhaul in the lifespan direction instead, like the F414 EDE proposal instead of the EPE. But I would assume that since the WS-10C2 is only a very short stopgap (hopefully) before the WS-15 arrives, it wouldn't make much sense to keep them around for long. And we know that the J-20A has reworked DSI bump geometries to accommodate for the WS-15 (which is allegedly has a noticeably higher mass flow than the WS-10C), which the WS-10C2 is compatible with, and I guess you can put forth an argument of that as an anecdote for WS-10C2 being an EPE overhaul instead of EDE.

And IMHO an EPE overhaul makes more sense to require a whole new designation than an EDE overhaul.

(Another theory is that the WS-10C2 is actually a VCE/ACE operational testbed of sorts but I think we can all agree that the above is way more likely.)

(I would be completely glad to move this to the Engine Development thread if the mods deem this as too off-topic)
If this WS-10C2 uses the same intake geometry as the WS-15 which has higher mass flow wouldn't it mean that this engine likely have a larger, more advanced core hence be could represent a significant redesign. This IMO is odd considering these engines likely cannot be retrofitted to older J-20s due to requiring different intake geometry but will also be replaced very soon by WS-15, so why spend all this time and effort to build a dozen or so specially made engines that will be replaced anyways.
 

Alfa_Particle

Junior Member
Registered Member
If this WS-10C2 uses the same intake geometry as the WS-15 which has higher mass flow wouldn't it mean that this engine likely have a larger, more advanced core hence be could represent a significant redesign. This IMO is odd considering these engines likely cannot be retrofitted to older J-20s due to requiring different intake geometry but will also be replaced very soon by WS-15, so why spend all this time and effort to build a dozen or so specially made engines that will be replaced anyways.
It would help if we have an idea as to which direction the C2 heads. But we don't.
 

Gloire_bb

Major
Registered Member
Likeliest explanation why ws-10c2 exists is that ws-15 is not necessarily just around the corner, contrary to that we anticipated.

Otherwise it'll be a parade armata batch. Not impossible (first J-20s flew on AL-31s, too), but there are clearly reservations about ws-15 readiness. It's birth was long and troubled, PLAAF needs(and apparently invoked) fallback option.
 

Tomboy

Junior Member
Registered Member
Likeliest explanation why ws-10c2 exists is that ws-15 is not necessarily just around the corner, contrary to that we anticipated.

Otherwise it'll be a parade armata batch. Not impossible (first J-20s flew on AL-31s, too), but there are clearly reservations about ws-15 readiness. It's birth was long and troubled, PLAAF needs(and apparently invoked) fallback option.
IMO, I couldn't care more about WS-15 right now but more concerned about next gen VCE engines and the overall maturity of the industry. 6th generation aircraft are much more dependent on engines than previous generations if China can't even get its F-135 technology equivelent in service by 2025(and possibly delayed for a few extra years past 2025) than it means Chinese aeroengine industry is still much behind and is still nowhere near parity with the US contrary to what most members previously thought. If true this could mean China might once again lose the race to the US because they'll once again have issues putting proper 6th gen engines into their 6th gen airframes while the US is progressing steadily with their NGAP program. Hence despite PLAAF might put 6th gen aircraft(but with only partial capability due to limited powerplants) into service faster, the US will have fully capable 6th generation aircraft sooner than PLAAF by potentially years. So hopefully this assumption is not true and the next batch will switch to proper WS-15s.
 

sunnymaxi

Major
Registered Member
If this WS-10C2 uses the same intake geometry as the WS-15 which has higher mass flow wouldn't it mean that this engine likely have a larger, more advanced core hence be could represent a significant redesign. This IMO is odd considering these engines likely cannot be retrofitted to older J-20s due to requiring different intake geometry but will also be replaced very soon by WS-15, so why spend all this time and effort to build a dozen or so specially made engines that will be replaced anyways.
AECC Shenyang is the richest AECC subsidiary. revenue exploded in recent years. the major reason they invested huge sum of money in different projects in which one is STOVL Engine. we have seen patents.

Shenyang still has R&D team on WS-10 Engine. they continuously upgrade engine and production method in order to enhance the efficiency. introduced 3D printed. WS-10 core upgraded in 2021.. seems like they did it again for WS-10XX

According to a recent podcast by Yankeesama even different batches of Taihang used for J-16 can have magnitudes of difference in terms of MTBO and lifespan.
IMO, I couldn't care more about WS-15 right now but more concerned about next gen VCE engines and the overall maturity of the industry. 6th generation aircraft are much more dependent on engines than previous generations if China can't even get its F-135 technology equivelent in service by 2025(and possibly delayed for a few extra years past 2025) than it means Chinese aeroengine industry is still much behind and is still nowhere near parity with the US contrary to what most members previously thought. If true this could mean China might once again lose the race to the US because they'll once again have issues putting proper 6th gen engines into their 6th gen airframes while the US is progressing steadily with their NGAP program. Hence despite PLAAF might put 6th gen aircraft(but with only partial capability due to limited powerplants) into service faster, the US will have fully capable 6th generation aircraft sooner than PLAAF by potentially years. So hopefully this assumption is not true and the next batch will switch to proper WS-15s.
who told you ?? China is at parity with USA in Turbofan Engine. right now China is tier2 Engine manufacturer.

China basically developed all materials and manufacturing process like additive/3D printed for next gen Engines. in this category China can compete with USA.

but advanced turbofan Engine is much more than that. serial production/commercialization is magnitudes levels of complex than produce a prototype. this is where China is struggling right now. but the world largest industrial power/material producer is working on it..

----------------------------------------------------------------------------------------------------------------
There are two plus points in China's ACE/VCE programs.

1. these projects started in late 2010's decade when China has sufficient institutional knowledge and established industrial base. WS-10/WS-15/WS-20 didn't have this luxury.

2. ACE/VCE project is divided in between two different AECC Subsidiaries. Shenyang has own program and Sichuan/Xian has own next gen Engine program.
--------------------------------------------------------------------------------------------------------------------

China will be tier1 Aero engine manufacturer by 2035.. This statement given by Liu Daxiang. father of China's turbofan Engine industry.

We usually consider only UK and USA tier1 players in this industry

**********************************************************************


Edit - i just saw a member said, they would have showcase WS-15 in parade if this was ready.. Nope.

this is not our tradition. PLAAF don't show latest/cutting edge equipment in open public spaces. even if WS-15 was ready. they wouldn't showcase. they always go with the safe option for event like this.
 
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cft4201

Just Hatched
Registered Member
IMO, I couldn't care more about WS-15 right now but more concerned about next gen VCE engines and the overall maturity of the industry. 6th generation aircraft are much more dependent on engines than previous generations if China can't even get its F-135 technology equivelent in service by 2025(and possibly delayed for a few extra years past 2025) than it means Chinese aeroengine industry is still much behind and is still nowhere near parity with the US contrary to what most members previously thought. If true this could mean China might once again lose the race to the US because they'll once again have issues putting proper 6th gen engines into their 6th gen airframes while the US is progressing steadily with their NGAP program. Hence despite PLAAF might put 6th gen aircraft(but with only partial capability due to limited powerplants) into service faster, the US will have fully capable 6th generation aircraft sooner than PLAAF by potentially years. So hopefully this assumption is not true and the next batch will switch to proper WS-15s.
Cute Orca said that the WS-15 only needed some "polishing" left. The use of this phrase would mean it's likely just around the corner.
 

Tomboy

Junior Member
Registered Member
AECC Shenyang is the richest AECC subsidiary. revenue exploded in recent years. the major reason they invested huge sum of money in different projects in which one is STOVL Engine. we have seen patents.

Shenyang still has R&D team on WS-10 Engine. they continuously upgrade engine and production method in order to enhance the efficiency. introduced 3D printed. WS-10 core upgraded in 2021.. seems like they did it again for WS-10XX

According to a recent podcast by Yankeesama even different batches of Taihang used for J-16 can have magnitudes of difference in terms of MTBO and lifespan.

who told you ?? China is at parity with USA in Turbofan Engine. right now China is tier2 Engine manufacturer.

China basically developed all materials and manufacturing process like additive/3D printed for next gen Engines. in this category China can compete with USA.

but advanced turbofan Engine is much more than that. serial production/commercialization is magnitudes levels of complex than produce a prototype. this is where China is struggling right now. but the world largest industrial power/material producer is working on it..

----------------------------------------------------------------------------------------------------------------
There are two plus points in China's ACE/VCE programs.

1. these projects started in late 2010's decade when China has sufficient institutional knowledge and established industrial base. WS-10/WS-15/WS-20 didn't have this luxury.

2. ACE/VCE project is divided in between two different AECC Subsidiaries. Shenyang has own program and Sichuan/Xian has own next gen Engine program.
--------------------------------------------------------------------------------------------------------------------

China will be tier1 Aero engine manufacturer by 2035.. This statement given by Liu Daxiang. father of China's turbofan Engine industry.

We usually consider only UK and USA tier1 players in this industry
Well, as long as Chinese next gen engines can atleast mostly match US timeline then its good enough for me. I'm hoping WS-15 is the last victim of the lack of industrial base and institutional knowledge as you said and next gen engines would no longer be bottlenecked and could match US counterparts in both timeline and quality.
 
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