p2prada
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You don't need complete ToT for license manufacturing. And China does not manufacture CFM-56. You source it directly from France or America for civilian purposes. CFM-56 was first delivered to China only in 1985. So, there is no way you can actually RE an engine you have no idea about. It is simply not possible without the source codes. Also, engine technology is very complex. Once you take an engine apart, there is no way you can put it back together again.budddy,chinese did finished many RE without any TOT.
if there is TOT ,then it is not "RE" .but "license production"
The only engine you had access to was the AL-31. Russians did not give you ToT. But, there is a chance you could have stolen it from Russia. There are plenty of technology thieves in Russia. Your engine development may have had support from the Ukrainians too.
Not if you already have an engine core(Al-31 in 1998). The Kaveri engine can use the M-88 core and be ready in 3 years for testing.guy, to develope a engine always takes decades .
Also, the CFM-56 engines that you have are series 3 engines. They have a thrust of 105KN at the max. There is no way you can make changes to the core to produce a thrust of 126KN as in the WS-10 or AL-31 without ToT.
The WS-10A and Al-31 have been modified to produce a thrust of 132KN from 126KN, coincidence. The first J-11 flight with the WS-10 was in 2007 and it wasn't all that great. The J-11 used had one Al-31 and one WS-10 engine for testing.
If your WS-10 was great, you wouldn't have ordered 100s of new Al-31s after the tests.