Seems to me that they arent confident enough in the WS-10C.
Seems obvious they are confident in the WS-10C to have replaced all production of J-20s to now be made with WS-10C engines. If they weren't confident with WS-10 series, they wouldn't have been building J-10 with WS-10 for over a year now.
Seems like you aren't very good at thinking. That's quite obvious since you take something with many explanations and make a stupid conclusion from it. Something that is clearly untrue - if they weren't confident in WS-10C and WS-10A/B, why would they have not bought any more Russian engines for so many years? Why would they have switched everything from J-10 to J-20 with WS-10 engines? J-11B and J-16 have been flying with WS-10, some for up to a decade.
The time it takes India to get a low thrust running, China would have completed 4 major LBR fighter engines (all clearly better, more reliable, and higher thrust). Two of those would have been in operations for WELL over 10 years... assuming the French SNECMA/Safran end up bothering to sort out the Kaveri. If they don't bother and simply slap a Kaveri sticker over an M88, then India would have completed 0 engines in about 50 years of trying. That's how difficult this is and India has thrown its weight behind the effort but gotten nowhere even for a relatively simple, outdated (1970s level), "mid" thrust LBR turbofan. India isn't brewing some magic engine that's going to revolutionise air travel. It's trying and failing to do something a group of well funded Chinese grad students could probably do better than the entire DRDO, HAL, and GTRE combined. In fact that's abundantly obvious because the evidence is there already - China completed WS-10 while India struggles with something half the difficulty for twice as long. In this time, China directly copied a WS-13 and is close to completing 5th gen engines WS-15 and WS-19 for operational status. In this realm, India smashes the other pretenders who talk an even bigger game but haven't even managed to truly bring anything into existence unlike India has at least gotten. Yes China has always had a better engine industry than the rest and enjoyed more funding and development along with experience and licensing engines from Rolls Royce and the USSR. The gap between China and India is wide, the gap between the rest is infinite because all they have is the power of cheap talk.
If you think WS-10 has reliability issues using the logic that J-20 in this flyby didn't use them, then can you explain why J-10 and J-11B which use WS-10 have been used in flybys in the past? Why all of a sudden they have so much confidence in WS-10 engine during those flybys? Or perhaps your stupid assumption is wrong and the true reason Al-31 powered J-20s were used was probably because of those J-20 units being located near Beijing and those pilots being selected for the flyby, fly using J-20 units with Al-31? Not because of your imaginations. I don't think you're trolling. I think you are this stupid since I've read so many of your other posts on this forum.
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