Chinese Engine Development

T

taxiya

Brigadier
Registered Member
Here is the ground test prototype, it seems that the fan blade is composite. It seems that CJ-1000A used composite fan blade from the beginning. That may be what the A stands for. I also suspect that CJ-1000 (without A) was never intended for build or never proceeded beyond conceptual study.
CJ1000 (2).jpg
 
T

taxiya

Brigadier
Registered Member
stannislas said:
wait a sec, this is from AVIC?
is that correct? what about AECC? how old this report is?
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AVIC ≈ AECC, similar to Volkswagen ≈ Audi

AECC was a branch of AVIC before the reform. After the reform AECC's major share holders are Beijing State Asset Management, AVIC and COMAC. AVIC is the only real technical owner of the three. From administration perspective AVIC is like the CEO. So whatever AVIC says is exactly what AECC would have said.
 
L

latenlazy

Brigadier
taxiya said:
Here is the ground test prototype, it seems that the fan blade is composite. It seems that CJ-1000A used composite fan blade from the beginning. That may be what the A stands for. I also suspect that CJ-1000 (without A) was never intended for build or never proceeded beyond conceptual study.
View attachment 77539
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8FE6ED0E-071C-490B-869C-5DF2676083EF.jpeg

I think those are actually two different blades. Those blades look all metallic to me...
 
Xizor

Xizor

Captain
Registered Member
We are likely watching a new version of CJ-1000 engines. And the CFRP blades with Titanium edges might be the highlight ( along with the Engine casing which is likely Composite too).

Remarkable progress. Very few engine makers / engine models have CFRP blades ( GE90, Ultrafan etc).

Less likely but What if China announces application or intention of application of CMC in the hot section? It'd be great.
 
L

latenlazy

Brigadier
Xsizor said:
We are likely watching a new version of CJ-1000 engines. And the CFRP blades with Titanium edges might be the highlight ( along with the Engine casing which is likely Composite too).

Remarkable progress. Very few engine makers / engine models have CFRP blades ( GE90, Ultrafan etc).

Less likely but What if China announces application or intention of application of CMC in the hot section? It'd be great.
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The CMC research pipeline is actually pretty deep in China. Another one of those base level technologies that China might have caught up on but which no one has noticed yet because it hasn’t been deployed into applications.
 
Xizor

Xizor

Captain
Registered Member
latenlazy said:
The CMC research pipeline is actually pretty deep in China. Another one of those base level technologies that China might have caught up on but which no one has noticed yet because it hasn’t been deployed into applications.
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China won't have caught up. Inconceivable to believe China has leapfrogged and cut through the decades of operational experience and iterative improvements put in by western companies.

However, since CMC is a relatively new entrant as a material, China can close the gaps with investments and research faster. It won't be as daunting a task as getting the engine design right.

The website is probably not reliable but it gives some info about CMC in China. It is a management consulting firm ( of all) .
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2008, Zhang Litong's team decided to establish XAXY Ceramic Composites Technology Co., Ltd. with entrepreneur Cai Mingtong
 
Xizor

Xizor

Captain
Registered Member
zszczhyx said:
The VR exhibition hall of AECC(Aero Engine Corporation of China)
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You can read introductions and watch videos on it.

CJ2000
View attachment 77597View attachment 77598View attachment 77599
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The Engine casing as well as the Fan blades seem to be Carbon fiber Composite like the CJ-1000A. But the images for CJ2000 doesn't show the real engine and is just a mock up (The irregularities and deformities are visible unlike a real engine).

The images for CJ-1000A posted is real ( mostly) and not a mockup.
 
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