What are you credentials with regard to engineering? Have you been involved with military jet engine development before?
That is what I have been saying, but you previously denied that the WS-10 has quality issues. You said that the reason it was held up was due to spool-up times. I am saying that quality control has been the bigger problem.
I still don't buy it, an aircraft engine is going to corrode or not corrode, just because it is Russian doesn't automatically make it resistant to sea salt. Your argument makes no sense. What you are saying is that SAC engineers decided not to test the J-15 with the engine that it would use in production because it would corrode the engines. So instead, they decided to go with the AL-31F...and engine which...is also unprotected and not designed to handle sea salt. The AL-31F is just a regular engine, it has no special modification that make it corrosion resistant. But I'll even give it to you.
It makes no difference anyway. The J-15 is, and will be for the next few years, tested on LAND. There is no reason to use AL-31s.
I am well aware that these things take a long time to develop, perhaps better than you. You said the J-10B project began in 2006 and it took five years for the first flight. The J-10B flew in 2009, check it. That is three years...not five.
I am being very realistic. I am not some huge CAC fanboy either, I am just looking at the facts.
You keep telling me that I am wrong but you are not inadequately explaining why the PLAAF is so hesitant to use WS-10s.
The J-11BS prototypes used WS-10, but the J-15s prototypes have not. Why? The J-11BS flew years before the latter, the engine was more mature by the time the J-15 came around.
The J-15 prototypes aren't seeing any water or any corrosion. They could be fitted with WS-10s just as the J-11BS was years EARLIER. Why are they not? You still haven't explained this. Huitong suggests that a J-11BS crashed, maybe the crash caused SAC to rethink putting an immature engine on future prototypes (hence the J-15 and J-20 were stuck with AL-31Fs). SAC is going to use WS-10 engines on the prototypes if they can because ultimately the J-15 is going to be powered by them. It doesn't make sense to test and aircraft with a different engine, and then go back and repeat some of the testing again with the final engine. The fact that SAC did not use WS-10 on the J-15 is telling.
The J-20 is in not threat of corrosion either. The J-11BS flew with WS-10s 3-4 years before the J-20. My argument still applies as it does with the J-15. There is a reason that these engines are not being used.
That reason is not supply. They will make sure there are enough engines for testing aircraft, aside from the fact that AL-31Fs are not being ordered or produced anymore, and therefore are in shorter supply.
It is not spool-up times because the J-20 and J-15s don't require faster spool up times for now. Besides, they wouldn't be using the WS-10 engines on J-11B or J-11BS if their performance was all that bad. If it can power a combat ready J-11B it can power a J-15 or a J-20 prototype.
It is not corrosion resistance.
It can only be concerns with quality. That's it.
it's doubtless FWS10 has a bright future. there are many applications
