Chinese Engine Development
- Thread starter jackbh
- Start date
A market study or report compiled by a FinTech or Market Research company.
Translate the article and only this seems relevant -
At the beginning of the 21st Century, Beijing Institute of Aeronautical Materials has developed the third-generation single-product superalloys DD9 and DD10. The mechanical properties of DD9 alloys are equivalent to those of foreign third-generation single-product superalloys CMSX-10 and TMS-75.
Hope I am not wrong when I conclude that around 2000-2005 timeframe, China had 3rd gen SCB. Also, It doesn't explain anything about current gen SCB ( 15-20 years have passed).
How about this one，from "Jiangsu Longda Superalloy Material Co" 2021 IPO files. This company is a supplyer of high-temp alloy to Chinese military.
It states that：The West has developed 5th gen SCA，no clear information indicates 4th and 5th gen has been used in industrial scale. China has developed 4th gen “DD-22”，however only 1st gen have been used in scale，2nd gen just start to roll out，3rd and 4th gen still no pratical use case
Then we have come to the conclusion that it is mass production (and better yields) that hampers China's faster progress in the field rather than fundamental R&D. China also seem to face issues with securing supply of rhenium and other elements. Has been discussed to death here.
Old article (2017)
High-temp alloy is already reaching temperature limits，future material will focuse on composite materials
Don't know the story about the "display piece", but I think the reason that there is the white pieces in this demonstrator but not in the "display piece" is that the "display piece" is contracted. The white pieces are used to cover the gaps of the black pieces, when the nozzle is fully closed in the "display piece", the white pieces are hidden by the black ones.
What I am trying to say is that even if that air frame is not a real J-10, the engine could still be real thing. At least one can not say it is not real by looking at that photo.
According to this report, France and USA is at 4th Gen, 1 generation ahead of China. If you always take China against the rest of the world, then yes China is 3 generation behind Japan (the whole west).
Besides, I don't see Japan's lead as the "west's" lead. If US withholds their crown jew (F-22, F-119, F-135 etc.) from Japan, there is no reason that Japan would share their top notch tech with US, therefor there is no "west" here.
Correction, 1st and 2nd generation are on equal footing in terms of application. The article did not make a claim of difference.
@tonyget,
I also seriously doubt the significance of your sources. All of them are from company in the open stock market per regulation of the stock market regulator. Unless they are directly involved in volume engine production, their words about research institutions achievement and applications are not really good indicator.
I mean, unless this company is subcontractor that produces such fan blade for WS-10 or CJ-1000, how could it know what was used? Also, there are very few Chinese jet engines in mass production for civilian market, the big volumes are for military, talking about production scale using western airliners is really meaningless.
I also seriously doubt the significance of your sources. All of them are from company in the open stock market per regulation of the stock market regulator. Unless they are directly involved in volume engine production, their words about research institutions achievement and applications are not really good indicator.
I mean, unless this company is subcontractor that produces such fan blade for WS-10 or CJ-1000, how could it know what was used? Also, there are very few Chinese jet engines in mass production for civilian market, the big volumes are for military, talking about production scale using western airliners is really meaningless.
