Chinese Engine Development

Andy1974 said:

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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not yet bro. but all major steps have have been successful.

from design to prototype to ground testing and prototype production.

airborne testing have left. it will take minimum 2 more years before certification and small scale production can commence after that

so most probably after 2025.

Blitzo said:

How did you reach that conclusion by reading his post?

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I looked at the video and saw a large factory, I concluded it was ready to be put into operation.

Andy1974 said:

I looked at the video and saw a large factory, I concluded it was ready to be put into operation.

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...
No. Just because you see a factory doesn't mean it is ready to produce products.

In the case of CJ-1000A, the engine itself has yet to even make a first flight test.

Blitzo said:

...
No. Just because you see a factory doesn't mean it is ready to produce products.

In the case of CJ-1000A, the engine itself has yet to even make a first flight test.

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Right, I prematurely ejaculated a little there.

Hyper said:

From Xian I guess?

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The engine is developed by 中科重明 which is a JV between CAS Institute of Mechanics and Anhui provincial investment located in Hefei, Anhui.

It worths to note that the aircraft (MD-21 and MD-22) is from a Guandong company whose technical investment is from an Xi'an institute (陕西空天动力研究院) who is involved in another hypersonic vehicle launch in July this year, see their log at the bottom of the rocket. That engine also involves Northwest Polytechnic University in Xi'an as printed on the rocket.

For me, geography location is less important than who is actually behind it, so we know how many different programs they are running.

It is interesting that this 3D TVC works differently from WS-10TVC in that the whole nozzle rotate without changing shape. The WS-10TVC and other similar ones (AVEN type) change the direction of jet by each individual petal being moved relative to each other. This new nozzle rotates as one solid piece. It looks similar to the ball type TVC the Su-30 uses, but in the dimension of non-TVC engine.

sunnymaxi said:

sorry for late reply ..

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

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

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CJ-1000 main assembly line

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

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

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AECC major plant in Shanghai has world class facilities , fully automatic and high tech.

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How official is the text in the background. The text in the foreground says
Thrust is 12900kgf to 13600 kgf
can mass produce in 5 years.
50% lower emission than ICAO CAEP 6
noise less lower than 1.08 EPNdB

the text in the background says
the original WS-10 had 12t thrust with afterburners
and the recent WS-10 is in the 15t thrust class.

I've anticipated for a while that to be case, but it would be a nice confirmation if true.

taxiya said:

It is interesting that this 3D TVC works differently from WS-10TVC in that the whole nozzle rotate without changing shape. The WS-10TVC and other similar ones (AVEN type) change the direction of jet by each individual petal being moved relative to each other. This new nozzle rotates as one solid piece. It looks similar to the ball type TVC the Su-30 uses, but in the dimension of non-TVC engine.

https://twitter.com/i/web/status/1589101555638505475

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I somewhat suspect that for this subscale model they're just representing the 3D TVC by moving the whole nozzle so they don't have to develop a model that articulates the individual petals.

Blitzo said:

I somewhat suspect that for this subscale model they're just representing the 3D TVC by moving the whole nozzle so they don't have to develop a model that articulates the individual petals.

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It is possible, but would be worse than not moving it at all. The simplification works for people who is there for fun, but very misleading to anyone who has some knowledge but can not be there and ask.

by78 said:

Turboramjet for supersonic UAVs and target drones.

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Note that most of this thing is 3d printed.