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Chengdu J-20 5th Generation Aircraft News & Discussions

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Mass production of turbine blades by Chinese private firm to benefit military

By Liu Caiyu Source:Global Times Published: 2017/9/3

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J-20 fighter jets showed at the military parade of the 90th anniversary of the founding of the PLA in a three-plane formation. Photo: CFP

A private Chinese company is mass-producing single-crystal turbine blades for aircraft engines, previously a monopoly of the US, which experts said will help Chinese fighter jets sustain prolonged battles.

The single crystals are a key indicator of a jet engine's capability, and its ultra-strong heat resistance can make it power high performance aircrafts.

Southwest China's Sichuan Province-based private company, Chengdu Aerospace Superalloy Technology Co. Ltd., is reportedly capable of producing single-crystal turbine blades, which, experts said could benefit the military and improve the quality of domestic parts.

The firm, which relies on its parent company that produces rhenium, became China's first company to mass produce single-crystal turbine blades, China Central Television (CCTV) reported Sunday.

Rhenium is a key metal used in producing single-crystal turbine blades, 80 percent of which are used to produce aircraft engines, either jets or rockets, and is vital to the military, the report said.

"Mastering the production technology of single-crystal turbine blades and aero engines will offer assured supply to the army and increase our fighter jets' ability to withstand prolonged battles," Xu Guangyu, a retired rear admiral and senior adviser to the China Arms Control and Disarmament Association told the Global Times.

It brings strategic benefits to the army since most fighter jets were powered by Western engines, Xu said.

"China's J-20, J-31 and H-20 fighter jets are now powered by homemade engines that feature domestic single-crystal turbine blades," Xu added.

According to Zhang Zheng, chairman of the board of the Chengdu Aerospace Superalloy Technology, told CCTV that products produced by his company have a huge market because the US had blocked core production techniques.

"Civil-military integration would boost not only the civil but also military aviation industry. It would be great achievement if China's C919 passenger jumbo jet can be powered by domestic engines," Xu said.

It's rare to see a private Chinese company master the technology used for aircraft engines, since most of technology of single-crystal turbine blades is in hands of State companies, Wang Yanan, chief editor of the Aerospace Knowledge magazine, told the Global Times.

Private firms' entry into the aviation industry would help increase its capacity and efficiency, Wang said. "Because of differences in management style, private firms are more cost-efficient, which is likely to bring a new perspective to the current industry. They are more efficient and competitive in terms of quality," Wang said.

China's 13th Five-year Plan for the National Development of Strategic Emerging Industries, which was released in 2016, highlights the need to improve homemade aircraft engines and develop the domestic aircraft industry.
And a related article about the crucial rare metal rhenium posted in the sibling thread should not be missed out... it tells more about the strategic importance of this material and the related technology.

"China has been faced with a hurdle of self-developing aircraft engines, because the U.S. and some Western countries have blocked certain exports such as rhenium to China for many years."

"China successfully purifies rare metal rhenium used to make aircraft engines"
 
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140KN = current version
155KN = possible optimized version in the near future

The WS-10B starts with 140KN, while the WS-10 started with 120KN, and the WS-10 has been optimized to 135KN, so we won't rule out the possibility that the WS-10B in the near future could be optimized to 155KN.

BTW, I think the rumor about the 155KN WS-10G was referring to the optimized goal for the WS-10B.

I think @Deino can also agree me on that.


But some sources indicate that J-20 uses the 135KN WS-10, not 140KN.
 
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But it does not follow the plan.
It's around 14 tonnes or almost 140 kN. That's what numerous "Big Shrimps" have been saying and corresponds with those AVIC brochures. I wouldn't be surprised if they intentionally understated the thrust and it was rally around 145 kN.
But it does not follow the plan.
This is the plan my friend.

Another issue and maybe anyone here can help !

I got a mail from the publishers of Air Forces Monthly since they saw that latetst high-resolution J-20 image for the Sky Hunter film.

They asked me if I would know the photographer, if I can arrange a contact and ask if they can use that image for their magazine!???

Any idea how to handle that issue and all help appreciated.

Deino
Uhm ... no need to ask them, I believe its open sourced. I saw a Global Times article use that image without permission so it shouldn't be that big of an issue. If you want, contact the Skyhunter producer directly ... the photographer probably works for the cast.

The WS-10B exhibited in the 2016 Zhuhai show is 140KN, and this is the engine designated for the J-20.
Once again, I wouldn't be surprised if the thrust is even higher (maybe 145kN?). This is pretty confidential information ...
 
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Once again, I wouldn't be surprised if the thrust is even higher (maybe 145kN?). This is pretty confidential information ...

The optimized version in the near future could even go up to 155KN if you follow the pattern of the WS-10, but as for now, we stick with 140KN.
 
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The optimized version in the near future could even go up to 155KN if you follow the pattern of the WS-10, but as for now, we stick with 140KN.
Indeed. Reliable Liyang insider @gongke101 states that the current WS-10B is around 14 tonnes. He also says that a WS-10 variant with its core enlarged by 1.4 times is also in the works.
 
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140KN = current version
155KN = possible optimized version in the near future

The WS-10B starts with 140KN, while the WS-10 started with 120KN, and the WS-10 has been optimized to 135KN, so we won't rule out the possibility that the WS-10B in the near future could be optimized to 155KN.

BTW, I think the rumor about the 155KN WS-10G was referring to the optimized goal for the WS-10B.

I think @Deino can also agree me on that.
Thanks for your detail explaination.

The difference between WS-10A and WS-10B is larger than what I thought, but reasonable.

It seems that 155KN WS-10G may not have the oppotunity to be installed in J-20, it has to compete with WS-15. Unless the current WS-10 in J-20 is a type "G"
 
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