Chinese Engine Development

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hardware

Banned Idiot
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development of air cool turbine blade for WS-10 and utlizing laser heating to strenglthing the blade.
a lot of technical mambo jambo,hard to translate.anyone got auto-translator.?
 
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vincent

vincent

Grumpy Old Man
Staff member
Moderator - World Affairs
hardware said:
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development of air cool turbine blade for WS-10 and utlizing laser heating to strenglthing the blade.
a lot of technical mambo jambo,hard to translate.anyone got auto-translator.?
Click to expand...

超纯净高温合金涡轮盘喷射成形技术；铝基复合材料构件喷射成形技术温度

spray construction - I think it means they are attempting to use 3-D printing technology in the construction of some of the components

铝基复合材料 - Aluminum based alloy

From Kanak in CDF:

I wonder if this laser 3-D printing technology could be used to fabricate ceramic turbine blades. If they use aluminium powder in place of titanium powder and do it in an oxygen atmosphere, it should be possible to build up Al oxide structure bid by bid.


Large amount of Al powder in an oxygen atmosphere is explosive. Al powder is used in fuel-air explosives and as a fuel in a solid-fuel rocket. But small amount-- especially in partial oxygen atmosphere-- might not.


Years ago, I read in an issue of Scientific American about engineering ceramics that Al oxide could work up to a temperature of 5000 deg Celsius-- The highest of the commonly know engineering ceramics. If China could make this work, it might solve the most important part of its problem with building aircraft engines.
Click to expand...
 
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L

latenlazy

Brigadier
vincent said:
超纯净高温合金涡轮盘喷射成形技术；铝基复合材料构件喷射成形技术温度

spray construction - I think it means they are attempting to use 3-D printing technology in the construction of some of the components

铝基复合材料 - Aluminum based alloy

From Kanak in CDF:
Click to expand...

I'm sure ceramic blades will work for some gas turbines, but not all. Particularly not sure if they can handle the mechanical stresses involved in some of the more intense turbine cores.
 
F

flateric

Junior Member
can someone say me why Shanghai aerospace propulsion summit agenda PDFs didn't mention WS-20 at all? or it's just a military version of SF-A/SF-B (CJ-1000?)
sorry for stupid question as always
 
K

kroko

Senior Member
flateric said:
can someone say me why Shanghai aerospace propulsion summit agenda PDFs didn't mention WS-20 at all? or it's just a military version of SF-A/SF-B (CJ-1000?)
sorry for stupid question as always
Click to expand...

That was the 2012 aerospace propulsion summit. Check the 2013 aerospace propulsion summit in shenyang. There is a link to the pdf in this thread.

The way i see it, perhabs it is now called WS-118 (with WS-10A core). A more powerful competitor engine seems to be SF-A (with WS-15 core). Perhabs WS-118 is being developed as a low-risk alternative to SF-A, since its core maybe more mature. There is also a lower-risk engine, WS18 (based on D30K2). Y-20 has three engine programs going for it. I think its an "insurance policy" if 1 or 2 programs fail. China really needs to get a domestic engine for Y-20.

That or perhabs this is the result of politics, with diferent branches pushing their projects.

CJ-1000A seems to be a totally new civilian engine, not based on any military core. For C919 use only. Perhabs this is the most high-risk engine. SF-A or WS-118 could be used for C919 in its stead.

This is all speculation of course. Probably someone in this forum knows more about this issue.
 
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