Chinese Engine Development

Equation

Lieutenant General
Just to add to things from my last post, we can't just believe it in the civilian aviation business if an engine maker says it can achieve certain level of sfc.


And that's with a company with decades of experience in this business. For China, CJ-1000A is a tremendous undertaking. It's unlikely any airliner will pick it over Leap-1C unless there is tremendous financial incentive. Outside of efficiency of the engine, airliners also have to consider the maintenance and overhaul costs. CFM international's CF-34E engine for E-175 jets are know to be subpar for their maintenance and that has been a problem for the secondary market cost of E-jets. To the point that embraer have picked PW1000G (GTF) for their next gen E2 airliners. Any Chines engine maker will have to build up a network of after sales support, maintenance and overhaul network. So even if they are close to these western companies in fuel efficiency and safety, it will be hard for any airline to pick it. So for the time being, i think the chinese high bypass engines will be mostly used by the military transports.

Than that's more of a PR and sales issue than an engine R&D issue. Business reputation can only go so far.
 

jobjed

Captain
You do understand that you are contradicting yourself since if you need all chains to work and if PRC is missing one or two links without other nations to provide help then as you yourself stated the entire link doesn't work.
Hence China's technological gap with the leaders in turbofan technology. China won't join them until the remaining few links are forged.
On the other hand many western nations can develop a collaboration obtaining other links from nations that do have the missing link making the entire chain work.
Like I posted earlier Japan provides that link in the form of material science to other nations and other nations can provide Japan the so called missing links as well.
China dislikes being reliant on other countries for crucial technologies. There always needs to be a domestic, though not necessarily the most cost-effective alternative, to any piece of technology that is critical to China's national security. History has shown, time and time again, that even allowing an ostensibly non-hostile country to have her hands around your balls in wartime is a horrendous idea.
 

Deino

Lieutenant General
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Its the first time i have heard of this. Does anyone has information on this?


This was even confirmed on the manufacture's HP ... have to look where again !

By the way ... as explained yesterday, this discussion has reached an end and arguments around how fine the F119 and F135 is are off-topic !
 

Engineer

Major
USA, England, Canada seek cooperation because of deficiency in capital, technology:rolleyes:

same Japan and USA seek cooperation because of deficiency in capital and technology
That is exactly what happen. Canada, England and Japan are only making sub-assemblies, not the entire engine. That's lack of technology. The US looks for partners to spread out costs, that's a hint of lack of capitals.

China both makes all components in the jet engine and continues to invest in improvements of those components. With exceptions of US and England, China is already doing a lot more than all other countries can do already. A entity that does more is in no way behind by any correct definition, unlike what some like to suggest.
 

SamuraiBlue

Captain
China both makes all components in the jet engine and continues to invest in improvements of those components. With exceptions of US and England, China is already doing a lot more than all other countries can do already. A entity that does more is in no way behind by any correct definition, unlike what some like to suggest.

Which engines are you talking about civilian or military?
I recall PRC import whole made engine in both areas.
 

Engineer

Major
that is not true i will give you a tour for the world engines
Ukraine builds the d-18T series 3 of 23, 000 kg thrust, it powers the An-124/225
What I said is absolutely true. US didn't receive any collaboration on the F-119. Going off tangent with "tour of world engines" is just your usual fallacy of
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in order to drag on your view that has been debunked.

By the way China buys the AI-222-25F for L-15 from Motorsich from Ukriane
It is a small engine, which China has no trouble coming up with an equivalent known as Minshan. See
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Later we go to the Japan

They build the XF-7-10 that powers the P-X

here you have a Japanese aircraft with Japanese designed and built engines

China at this moment is only ahead of Brazil and India and more or less at the same level of Japan
You can't be more mislead if you truly believe what you have wrote. Japan XF-7-10 only has half as much thrust as WS-20. Japan has no WS-10 equivalent, and is even further from a F-119 equivalent than China is.
 
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Engineer

Major
Which engines are you talking about civilian or military?
I recall PRC import whole made engine in both areas.
Military, and specifically WS-10. Imported engines either get indigenized or merely serve as interim solution. Importing does not negate the fact that China already has all the links in the chain required to produce jet engines, which is already more than what most nations have.

Civilian engines have geopolitical factors involved, not just technology factors. Let's just say if China has an equivalent of GEnx, China would still have no share of the civilian aero-engine market.
 

tphuang

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Chinese engine industry is clearly behind western companies like GE, P&W, RR, Safran. While it may pass Russians and Ukrainians in the future, it's also currently behind them. Saying that it's not behind these countries because it has a whole portfolio of products only means it has more projects. It's still behind those countries in terms of technology.
Saying England only makes sub assemblies is entirely laughable. Half of the wide body airliners use Rolls Royce engines.
 

Engineer

Major
Activities cannot subsititute for achievement though.
That's false dichotomy. Achievement is an incremental process, not a binary process where you go from 0% to 100% after certain time criteria has been fulfilled. Hence jet engine development is analogous with forging a chain, and the one who got more links completed is obviously ahead of those with less links forged.
 
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