Chinese Engine Development

Xsizor said:

Not that Rolls Royce would desperately need IHI/ Japan expertise ( they don't. Most know that).

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Most all RR commercial Trent engine's fan blades are built in Japan due to it's extreme weight and balance control.
RR also has very little experience with CMC technology which Japan is the forerunner for this technology as well.
Japan is also a forerunner in metallurgy which is Key in developing cutting edge SCB.
RR needs Japanese technology more than Japan needs RR.

Xsizor said:

The Japanese have developed fourth, fifth gen SCBs. But I am going to presume its technology accumulation for their F3 fighter jet program where they are going to collaborate with Rolls Royce and UK for both Aircraft and Engines. Not that Rolls Royce would desperately need IHI/ Japan expertise ( they don't. Most know that).

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Each generation has 40 degree raising, but require more rare element Re.

China choose another way by complicated cooling hole.

SamuraiBlue said:

Most all RR commercial Trent engine's fan blades are built in Japan due to it's extreme weight and balance control.
RR also has very little experience with CMC technology which Japan is the forerunner for this technology as well.
Japan is also a forerunner in metallurgy which is Key in developing cutting edge SCB.
RR needs Japanese technology more than Japan needs RR.

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citation needed.

SamuraiBlue said:

Most all RR commercial Trent engine's fan blades are built in Japan due to it's extreme weight and balance control.
RR also has very little experience with CMC technology which Japan is the forerunner for this technology as well.
Japan is also a forerunner in metallurgy which is Key in developing cutting edge SCB.
RR needs Japanese technology more than Japan needs RR.

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Rolls Royce mentions in its website that Japan contributes 20 percent of components for its engines.
And the Fan Blades, being a critical technology, are manufactured by RR. The only center outside England that is used to manufacture them are in Singapore.
The carbon fibers are Toray supplied but the CMC themselves are fabricated by British/American companies. I'm going to ignore that last statement of yours. Guess Japan doesn't need Rolls Royce and will create an engine all on it's own for a fighter then. Oh wait...It seems like it does.
Also,

ascii said:

Each generation has 40 degree raising, but require more rare element Re.

China choose another way by complicated cooling hole.

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Japan sources rhenium as Molybdenum ores from Foreign suppliers and recovery of Rhenium from old/junk engines etc. But The fact that they simply can source it from a Global network catering US/EU is only revealing. Japanese remain faithful suppliers of components for Foreign Turbofan giants. That may be enough for Japan.

China's requirements are more harsh. It needs to secure its supply chain from the raw material stage. As the production of elements and Tools get refined, we will get better news to fill these threads.

ascii said:

Each generation has 40 degree raising, but require more rare element Re.

China choose another way by complicated cooling hole.

Click to expand...

Everyone is using cooling holes.

SamuraiBlue said:

Most all RR commercial Trent engine's fan blades are built in Japan due to it's extreme weight and balance control.
RR also has very little experience with CMC technology which Japan is the forerunner for this technology as well.
Japan is also a forerunner in metallurgy which is Key in developing cutting edge SCB.
RR needs Japanese technology more than Japan needs RR.

Click to expand...

I am calling BS on this. I was at RR Derby in the mid 2000s, and we did the SCB at Derby for the Trent 700s. The Bristol plant did the stuff for EF2000 but the Trent stuff was definitely done in Derby/UK.
That said, I do recall the 5 or 6 axis machine used was from Japan, unless my memory fails me.

Machine translated that image.