J-20 5th Gen Fighter Thread VI

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Captain
Since when have we concluded that China has an LRIP system? There's been no mention of the J-20 using LRIP, which implies that not even the FCS is mature.
 

ougoah

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Someone's confused. However FCS is probably the biggest challenge after engines for China. There is a known possible problem with J-15 FCS which is true for Su-33 as well. Still quite a lot of progress made in fly by wire and FCS in the last few decades. Only a small handful can do this. USA, Russia, France, China, and UK. No one else really mastered this stuff for high performance, unstable fighter aircraft. Indians completely ripped off French Mirage design for their domestic project and more than half the actual work was done outside of India for the higher end of technology. China benefited from Israeli and Russian experts in the early years of developing this stuff as much as CAC want to claim all the credit for it.
 
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Inst

Captain
My point is that LRIP is unique to American defense procurement; countries like Russia and China may use similar processes but it's not the same. You have to remember, various F-35 models during the LRIP process couldn't even fire their guns. In the United States' case, it's a sort of a scam, an attempt to say that an aircraft that's still in the beta process is fully operational and that issues are with the production process, not the development process.

In China's case, the J-20 was declared operational by the PLAAF. Moreover, LRIP in the J-20's context implies that either the WS-10X or AL-31-engined J-20s are going to be put into mass production at some point, when we expect the J-20 instead to go through A, B, C stages like the J-11s and J-10s.

That is to say, the J-20s and J-20As may ALWAYS be in the equivalent of LRIP; LRIP is simply not applicable. The J-20B and J-20Cs using more advanced engines, on the other hand, may be produced at higher volumes. In this context, does it make sense to claim that the J-20 is in LRIP?
 

ougoah

Brigadier
Registered Member
Okay I think we all misunderstood you with the FCS then. Did you mean J-20B/C ... will likely have a different set of FCS when newer engines are installed? What they have with the Al-31/ WS-10 must be decent enough for PLAAF to put into any rate of production, showing that existing FCS is fine for this setup. FCS for new engines is a matter of tweaking it, hardly going to take forever. They've been changing the engines and frame of J-10 and J-20 a few times with no known FCS problems so J-20 with WS-15 shouldn't be a real big issue.
 
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