Engines are like aircraft, they go by generations, the current WS-10 is one generation behind what the US or Russia have, one generation, see, this is important the Su-27/J-11 today are old aircraft, specially in the case of China are even older.
So please tell me what defines engine generations. Tell me what makes an engine 4th gen and what makes it 5th gen. I mean give me some solid, reasonable cut-offs in that definition, not some hazy stuff about 1 being a little heavier or maybe needs more maintenance, actual numbers unknown, but probably LOL
The generations go by size and thrust to weight ratio, the Me-262 had really weak engines if i am not wrong 900 kg/thrust, this went up in the MiG-21 to 7000 kg/thrust and this later came up to 13000 kg/thrust in the Al-31/F-100.
So... what? You're saying thrust determines generation? If so, WS-10 is top notch in thrust, certainly on equal footing to the newest AL-31, not with the F-35 engine though (but that is the most modern fighter engine in the world and it's still having problems). I certainly don't see how this supports your thesis that WS-10A is an entire generation lower than AL-31 or F-100.
WS-10 is not at the same Level the newest Al-31s or 117s series, also these engines are old, type 30 promises to power Russia to have a smaller, lighter, more economic and reliable engine that the highly revamped 117 series.
All I hear from you is that they're not the generation and WS-10 is a lower level, but I don't hear why. AL-31 powers flankers; WS-10A powers flankers, so same size. AL-31 and WS-10 have comparable thrust, maybe a little in favor of the WS-10As. So far, size and thrust are comparable. Then, what about weight? I don't know; maybe WS-10A weighs a bit more but it's nothing phenomenal, especially when you factor in the weight of the entire aircraft, not just the engines. I don't see any noticeable gap. Do you?
Type 30 promises? It doesn't promise anything until it's done (and Russia's economy ain't exactly moving like a well-slicked machine). If you put it that way, WS-15 promises China will have a more powerful fighter engine than anything Russia has. It seems you treat non-Chinese projects like they're all done deals that will reach their targets without hitch but even when China has hundreds of its engines in service with one of the most relevant fighter designs (the Flanker), you want to dismiss that as "inferior" and "a generation behind". I really need to see some solid evidence to believe this.
To see, consider a Su-35 will supercruise and a Eurofighter will do the same, no J-10 or J-11 can do that.
Su-35 uses AL-41, which do have higher thrust than WS-10A. None of Russia's Flankers equipped AL-31 supercruise. Eurofighter is a different design entirely.
as long as J-31 and J-20 use Russian engines and the J-10s and J-11s use Al-31s, the Ws-10 still is far far away to compete with 117s and F-119s engines
Not only is this logic badly flawed, its conditions don't even stand up to fact. The most modern J-11s use WS-10A, including the J-11D prototype. Only older J-11 still use AL-31.
That is if the leader let you copy, and today copiers can be always surpassed by just simply improving the technology you have, the West has brains and Russia too, proof is called Su-35 it supercruises and F-119 it supercruises and the US will simply put more restrictions to Chinese nationals or chinese americans working in the US like they did to Japanese in WWII, remember the other side always react
Logic flawed again. Only if the leader lets you copy? Well then I guess nobody uses any spies nowadays. Copiers can always be surpassed by "simply" improving the technology you have?? I think you have things backwards. It's much simpler to copy than it is to improve cutting-edge technology, otherwise, who would copy? I'm sure the US (among countries) is doing everything it can to stop China from getting its technologies, as any nation should be, but as we know, leaks still happen. They can ban all Chinese people, (or even all Asians who look remotely like they might be Chinese) from working on their projects, but they'll stand to lose a lot of talent as well. They'll have to balance that. And also, it's not like white people have never sold a couple secrets for some cash. Anyways this discussion isn't about espionage, but you're making it sound WAYYY too easy to stay on top.
