Chinese Engine Development

R

ReneDad

New Member
sunnymaxi said:
damn ..

as per the CCTV, this is high-thrust, low-fuel consumption, high-bypass ratio twin-rotor turbofan engine AEF1300 independently developed by AECC made its debut.

Weibo fans are saying this is WS-20 ..

but it looks like CJ-1000A new name. and this is the first time AECC display real civil engine with nacelle.

View attachment 101095View attachment 101096
Click to expand...
It shouldn't be a CJ-1000A. CJ-1000A's fan only has 18 blades, but this one has 22.

Since it was put in a group of WS-10 variant engines, logically it should be developed by the same core with WS-10's, which means it should be a WS-20 or a variant of WS-20.

I also noticed that the two engines with victor trust nozzles belongs to another group. I suppose engines in the group are not related to WS-10 but new generation engines, like WS-19 or WS-15.
 
sunnymaxi

sunnymaxi

Major
Registered Member
ReneDad said:
It shouldn't be a CJ-1000A. CJ-1000A's fan only has 18 blades, but this one has 22.

Since it was put in a group of WS-10 variant engines, logically it should be developed by the same core with WS-10's, which means it should be a WS-20 or a variant of WS-20.

I also noticed that the two engines with victor trust nozzles belongs to another group. I suppose engines in the group are not related to WS-10 but new generation engines, like WS-19 or WS-15.
Click to expand...
that's huge. i didn't notice this difference. thank you

so this is WS-20 engine or a variant of WS-20.

22 blades ..
mysterious WS-20 model.jpg

18 blades

CJ-1000A ......jpg
 
T

taxiya

Brigadier
Registered Member
sunnymaxi said:
damn ..

as per the CCTV, this is high-thrust, low-fuel consumption, high-bypass ratio twin-rotor turbofan engine AEF1300 independently developed by AECC made its debut.

Weibo fans are saying this is WS-20 ..

but it looks like CJ-1000A new name. and this is the first time AECC display real civil engine with nacelle.

View attachment 101095View attachment 101096
Click to expand...
Am I right to say that the fan blades in the model is composite with metal(titanium) leading edge?
 
T

taxiya

Brigadier
Registered Member
ReneDad said:
It shouldn't be a CJ-1000A. CJ-1000A's fan only has 18 blades, but this one has 22.

Since it was put in a group of WS-10 variant engines, logically it should be developed by the same core with WS-10's, which means it should be a WS-20 or a variant of WS-20.

I also noticed that the two engines with victor trust nozzles belongs to another group. I suppose engines in the group are not related to WS-10 but new generation engines, like WS-19 or WS-15.
Click to expand...
The first screen shot
1667769240906.png
The subtitle is AEF1300 which is the alternative name for CJ-1000A. Unless CCTV is putting subtitles on wrong thing.

As the possible reason of different number of blades. This one in the screen dump looks to be composite blade. I have asked the question in #7044.

The earlier CJ-1000A ground test article was hollow titanium blade. Could it be that the number of blades are changed due to change of material?
 
sunnymaxi

sunnymaxi

Major
Registered Member
taxiya said:
The first screen shot
View attachment 101188
The subtitle is AEF1300 which is the alternative name for CJ-1000A. Unless CCTV is putting subtitles on wrong thing.

As the possible reason of different number of blades. This one in the screen dump looks to be composite blade. I have asked the question in #7044.

The earlier CJ-1000A ground test article was hollow titanium blade. Could it be that the number of blades are changed due to change of material?
Click to expand...

CJ-1000A prototype with composite blades display during Zhuhai Air Show 2021 has also 18 blades

i have closely following the CJ-1000 development. from the first porotype to until 2021, engine have 18 blades.

51548261560_a1a7eeff09_k.jpg
 
L

latenlazy

Brigadier
taxiya said:
The first screen shot
View attachment 101188
The subtitle is AEF1300 which is the alternative name for CJ-1000A. Unless CCTV is putting subtitles on wrong thing.

As the possible reason of different number of blades. This one in the screen dump looks to be composite blade. I have asked the question in #7044.

The earlier CJ-1000A ground test article was hollow titanium blade. Could it be that the number of blades are changed due to change of material?
Click to expand...
Last year’s CJ-1000 mock-up also showed carbon fiber fan blades and had 18 of them. I think this is just a different engine. Maybe tailored to military requirements.
 
A

Andy1974

Senior Member
Registered Member
sunnymaxi said:
sorry for late reply ..

CJ-1000 official promotional video from AECC released during Zhuhai Air Show 2021

Please, Log in or Register to view URLs content!

download this and watch in decrease speed. coz it is extremely fast. there are plenty of hidden information and glimpse of factory.

View attachment 101180

CJ-1000 main assembly line

View attachment 101181

CJ-2000 promotional video has been deleted on Bilibili. trying to find out.

i have taken some screen-shot from CJ-2000 video

View attachment 101182
View attachment 101183

AECC major plant in Shanghai has world class facilities , fully automatic and high tech.
Click to expand...
So CJ-1000A is ready for certification and mass production? Does this mean we don’t need LEAP engines for C919?
 
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