Chinese Engine Development

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schenkus

Junior Member
Registered Member
Hendrik_2000 said:
Starrag Swiss Turbine blade CNC machine designer What is AVIC logo doing here
Click to expand...

It seems that AVIC bought the system shown in the video in May 2016, it is supposed to be capable to produce 40000 turbine blades a year.
The photo from the official delivery in the following link seems to show the same setup as the video, so it might be made around that time (
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Hendrik_2000

Hendrik_2000

Lieutenant General
schenkus said:
It seems that AVIC bought the system shown in the video in May 2016, it is supposed to be capable to produce 40000 turbine blades a year.
The photo from the official delivery in the following link seems to show the same setup as the video, so it might be made around that time (
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).
Click to expand...

You are right Surprising but this is not seem to be hollow turbine blade so it is not intended for high temperature application aka first stage turbine blade
So I guess it passed ITAR
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upload_2018-1-27_13-6-44.png

Die feierliche Übergabe des Starrag-FFS mit gesamthaft vier Bearbeitungszentren war ein herausragender Anlass am Starrag-Hauptsitz Rorschacherberg. Neben einer 15-köpfigen chinesischen Delegation des AVIC-International Development Corporation sowie der Xi’an Aero-Engine Corporation nahm Starrag-Werksleiter Dr. Bernhard Bringmann und die gesamte Starrag-Belegschaft teil.
 
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Hendrik_2000

Hendrik_2000

Lieutenant General
Han patriot(Singaporean?) from pakdef posted this video Here is what he has to say
Guys, how can we miss this news. 24:00 onwards, those who can understand Chinese would jump in hysteria. They are producing the 'world's first single crystal titanium alloy' (please translate properly for me) for Rolls Royce, 100 pcs to be delivered by end of 2018. Germans theoretically calculated that this is impossible, they proved them wrong with 10 years of research.
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Based on above pdf, these are LP blades for the TRENT XWB engine.
 
O

ougoah

Brigadier
Registered Member
Some guys on PakDef also posted a video of an interview where an alleged J-10 pilot said he personally thinks J-20 is now using WS-15 as the new nozzled engines instead of a WS-10 variant. Reputable? or already debunked?
 
J

jobjed

Captain
ougoah said:
Some guys on PakDef also posted a video of an interview where an alleged J-10 pilot said he personally thinks J-20 is now using WS-15 as the new nozzled engines instead of a WS-10 variant. Reputable? or already debunked?
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That pilot is retired so his personal knowledge probably isn't up to date. He can ask colleagues still serving but who would answer such a sensitive question seriously?
 
O

ougoah

Brigadier
Registered Member
While that is true, why wouldn't he have said the more accurate, "I just don't know" rather than say with so much certainty in his tone that J-20 "definitely is not using Taihang" and the new engine must be WS-15. He was comfortable saying "I don't know" to at least one other question regarding J-10. Who knows though. He doesn't need to tell the truth and maybe he's told what to say and it ain't necessarily true. This is a very accessible interview and the topics discussed are quite sensitive.
 
K

kurutoga

Junior Member
Registered Member
Hendrik_2000 said:
Han patriot(Singaporean?) from pakdef posted this video Here is what he has to say
Guys, how can we miss this news. 24:00 onwards, those who can understand Chinese would jump in hysteria. They are producing the 'world's first single crystal titanium alloy' (please translate properly for me) for Rolls Royce, 100 pcs to be delivered by end of 2018. Germans theoretically calculated that this is impossible, they proved them wrong with 10 years of research.
Click to expand...

Just to be clear it is not the single crystal "high pressure" superalloy blades. These are casted Ti-Al alloy for the low pressure stages that working temp can't go higher than 900C or so. I think the real purpose is it is lighter and cheaper than the alternative. You can find another youtube video that another Singapore firm also does it.
 
N

nemo

Junior Member
kurutoga said:
Just to be clear it is not the single crystal "high pressure" superalloy blades. These are casted Ti-Al alloy for the low pressure stages that working temp can't go higher than 900C or so. I think the real purpose is it is lighter and cheaper than the alternative. You can find another youtube video that another Singapore firm also does it.
Click to expand...

Not single crystal but single piece formed (i.e. without wielding). In this case, the blade is casted. The problem was titanium is too reactive so yttrium oxide had to be used for the mold, but the material is too fragile. The breakthrough was a special adhesive that hold yttrium oxide together so it can be used for the mold.
 
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