In the past China has technically never made a knockoff of any Russian/Soviet fighter. The F-6 (MiG-19) was produced under license from USSR & the F-7 was/is just a MiG-21 lookalike (not MiG-21 itself).Given China's past history of making knock-offs of Russian MiGs (which for decades were the backbone of China's air force) ...
The only proper copy is perhaps the J-11 = Su-27.
The new Chinese J-11, termed J-11B is not accountable to Russian license, in fact the Chinese have suspended the Russian license in order to produce their own version. In late 1960s PRC sold Pakistan F-6 fighters without the Soviet approval (& they did not require it since Soviet-PRC relations had gone cold. license was canceled & PRC was producing fighters on its own).Is China prepared to export the J-11 without Russian approval and involvement? If so, I'd expect Russia to suspend a wide range of contracts with China, both military and non-military alike.
In recent times PRC was going to sell RD-93 engines to Pakistan without the approval of Russians. The Russians did confront the Chinese only to end up approving the sell.
If you ask me I don't think Russia is going to cancel or suspend its exports to PRC since China is the largest purchaser of Russian arms.
I can't say whether WS-10A is really a master piece but it certainly could be the path to it. China is serious about engine making. WS-10A is not the only engine they are pursuing, WS-13 for JF-17/FC-1 is another project in its final phases.Finally, have the Chinese really mastered the most complex subsystem of a modern jet fighter - it's engine? ... Only time will tell if China's purported success with its WS-10A is real, or only a propaganda vehicle being used as a bargaining chip to secure better access to Russian technology.
Can't say that Chinese engines are bargaining chips against Russia but they can certainly act as one.
I'll have to agree here. I don't see either of them going for a divorce any time soon. There will be quite more years in this marriage.More likely, however, is that there is a lot of maneuvering and posturing going on. China is not going to want to give up its access to Russian experience with the Su-27 until they know that they really have a viable home-grown option (that doesn't enter a mid-life crisis due to quality defects). The Russians in turn, will want continued access to China's defense market. I would expect to see a lot of bargaining going on during the coming months.