Where do you think technology of CFM-56 coming from when China had nothing to begin with if US did not provide the Pratt & Whitney F100 engine as part of friendship technology transfer? It's considered reward to China for pleasing US by attacking Vietnam at that time.
The same goes to how Soviet jet engine technology started with British giving technology to Stalin as token of appreciation in fighting Hitler's forces. Soviet immediately came up with advanced turboprop aircrafts followed by Mig-15 fighter.
What the fxxx!?? You know - or at least should know and check - that the CFM-56 is built by
CFM International (CFMI), a 50–50 joint-owned company of
Safran Aircraft Engines (formerly known as Snecma) of France, and
GE Aviation (GE) of the United States.
Pratt & Whitney has nothing to do with this engine and as such even less with the J-20's engine.
No PW F100 was provided by the US to China and especially not "as part of friendship technology transfer".
The CFM-56 delivered to China and allegedly "lost" were delivered together with some B737s and from all we know China reverse engineered the WS-10's core by using the CFM-56's core.
OMG, get the facts correct or check what you are posting ..
Facts are facts and we can't deny that. You shouldn't spin things around instead by dragging Pakistan into this. My post to Figaro contained historical political because these tech provided part of political good ties at that time that are part of the engine origin so don't try to give me warning, etc.
Yes, facts are facts but it seems this is not valid for you ... "F100 by Pratt Whitney provided to China as a gift for friendship based on the FCM-56 and used to develop the WS-10 by mating it with the AL-31 nozzle."
So much on your facts!
I'll give you warning exactly for that reason ... you are posting BS, fake and off topic stuff and either you know it or you simply do it for fun, which is trolling.
Also your post towards
@Figaro contained NO "historical political" things but simply plain wrong BS.