I do believe it is worth discussing.
I think that using a WS-15 in a single engined fighter gives a lot of bang for the buck compared to using 2 in a dual engined fighter. If there were only 2 engines, it would be better to have 2 fighters that 1. I’m not saying it’s 100% equivalent, but for 30 engines you can equip a whole squadron of J-10s.
We already know, from the GT article I posted earlier that J10 is capable and has successfully achieved far-sea intercept missions, with WS-15 this range could be extended further. Range is the main argument against J10 here, WS-15 increases it.
The J10 does not have an EW variant, adding WS-15 could supply the electrical power needed for many sensors and emitters.
We just heard the J10 pilots have an easier transition to J20, which will be powered with WS-15, so having J10 powered by the same engine will keep pilot transition smooth.
We don’t know about cost of the WS-15, but maybe it will be lower and have lower maintenance costs, we just saw some other engine parts be qualified for 50,000 hours life, for example. There may be a financial incentive to switch.
There may be a very large production run of WS-15 engines, much like we are now seeing with WS-10 engines, The existing WS-10 lines could be transitioned giving great capacity early.
Even if J-10 is 3rd in line for WS-15, it won’t take long to get too.
I also expect further upgrades, along with the engine. For example we just learned that 3D printing is being widely used, so I can imagine that this would be done in conjunction with a new WS-15 variant, further mitigating the range issue.
The export market space is quite good, anyone buying J-10 now is on the fast track to J-35 and more. Keeping J-10,current in terms of avionics is important, so as more fifth and sixth Gen technologies are developed they can also be applied to J-10. More production keeps cost low.
The J-10 has a variant with a spine, this should make future upgrades to airframe, avionics and engines easier.
Additionally we have seen many stealth materials at the airshow, for export. And 3D printing eliminates rivets according to a recent article. So, not only is a new airframe quite feasible, so is a stealthy skin.