Sorry, can you explain the significance of these new numbers, what do they imply?
J-20 5th Generation Fighter VII
- Thread starter siegecrossbow
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Shenyang build pulse assembly line. and it took 5 years. so a single unit of engine production time reduced by 2/3. and results are in front of us.
WS-20 production begun too. from 2021 components production scale up by many folds.
Chinese aero engines makers caught up the western engine makers in terms of production.
almost daily i get interact with bunch of Indians and Anglos on twitter. same old shit. ah China can't produce engine. they bought SU-35 to just examine the Russian engines. bla bla bla
these people will never ever accept China has second most powerful country in science and technology.
What is "pulse assembly line"?
Let's hope China catches up to western engine makers in terms of technology.
First in plenty of fields already. But never rest on laurels.
They have improved a lot and more than many of us have anticipated by this point, but have definitely not caught up to western engine makers. Just thinking about it this way, Airbus and Boeing produce probably close to 120 narrow body per months which would require 240 engines and spares and that is split between just Pratt and cfm. China has come a long way, but let's not get ahead of ourselves.
Even when it comes to 5th gen, lockmart is still capable of producing 150 a year. At this point, cac is probably at half of their level although I anticipate cac + sac + guizhou together is probably getting close to 150 a year now.
pulse line is a type of moving assembly line, but its one step short of a continues moving line. In a pulse line, products are positioned sequentially in a straight or U-shaped line on the shop floor. The products stay at those positions until all the planned work is complete.
this concept first introduced by US military industrial complex in early 2000's. you can apply this on any heavy industrial product.
China also started to convert its production line as pulse lines. Y-20 was the first Chinese aircraft to actually produced on pulse assembly line. now all main Chinese military industrial products have pulse assembly line include engines.
like this..
In low bypass military turbofan production, China is improving and can be scaled up to match the US which btw isn't producing as many as they could since the only current one it is mass producing is F-135 because the only fighter they are mass producing for themselves is F-35. In commercial high bypass turbofans, it's nowhere near US/UK.
Production rates mainly depend on the bottleneck components and their manufacturing processes. It isn't really an issue to scale this up. It's a matter of cost and priority. Cost because there are obvious financial and resource costs and priority as opportunity cost to how limited resources are used. Basically I'm trying to say since the technology is long mastered and there is pretty much total self dependence for low bypass military turbofan production, at least as far as being realistic (ie there surely are some Swiss machinery here, Japanese tools there etc etc), China can produce as much as the US did at its peak rate performance. It's just not what the strategic direction ordered.
Thanks for explanation. Seems like a good direction for adjustments. Surprised even better manufacturing process innovations have not been made. I mean this is already relatively obvious stuff from factory arrangement to equipment that allows this sort of manufacturing ie moving lines. Been used in car making for decades hasn't it?
Now this is a fine factory. Safran? GE or RR or P&W?
sir i m talking about low bypass military turbofan engine production ..
In commercial high bypass turbofans, China is nowhere near US/UK. coz they just started their journey.
LEAP engines assembly line in Safran plant.. but with collaboration with GE
AECC released the promotional video of CJ-1000/CJ-2000. their main Shanghai plant is as advance as any western counterpart. we have seen glimpse
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