Chinese Engine Development

[superdog]

One advantage of this design is that no additional mechanism is required to change the petal position. However, it is more prevalent on older engines.

I'm talking about the small pedals that dropped down, I'm not aware those existed in older engines. The inner and outer 'rings' of the nozzle are still actively actuated, they are not free-moving or fixed like on older jet engines.

One advantage of an ejector nozzle is actually lowered heat signature.

 

[delft]

From

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In part:

Motor Sich to Power Chinese Stealth Jets
For war jets, China’s Skyrizon and Ukraine’s Motor Sich are planning to build a plant in Chongqing to produce and service aircraft engines with Ukrainian technology, Stepan Kubiv, Ukraine’s First Deputy Prime Minister, said in May after visiting the central Chinese city, 1,500 km southwest of Beijing.

“The company plans to invest $250 million in upgrading the Ukrainian production and design facilities of Motor Sich,” Kubiv wrote on his Facebook page after visiting the Chongqing site and meeting executives with Beijing Skyrizon Aviation Industry Investment Co. Ltd.

Motor Sich is one of the world’s largest manufacturers of aircraft engines, with sales to 100 countries. Motor Sich recently supplied 20 AI-222 turbofans for use in Chinese L-15 fighter-trainer jets, the first in a $380 million deal for 250 engines.

It is unclear how work will be split between Chongqing and Motor Sich’s design and production base in Zaporizhia. China wants make in China its own engines to power its latest generation J-20 and J-31 stealth fighters. Kubiv predicted that the first Motor Sich engine could be produced in China by the end of this year.

This doesn't look like a reliable site. I haven't look here before. But Motor Sich investing in Chongqing is worth noting.
The article also mentioned production of An-124 in China. Will Motor Sich move the production of engines for these aircraft to Chongqing?

 

[Figaro]

Chinese aero-engine manufacturer shows high-end models at expo

2017-09-12 10:20

Xinhua Editor: Gu Liping

Aero Engine Corporation of China (AECC), the country's leading state-owned aircraft engine manufacturer, will show its high-end products at the upcoming Aviation Expo China 2017.

The company will exhibit its major achievements in promoting integrated military and civilian development at the expo, which will be held in Beijing from Sept. 19 to 22, according to the AECC.

It will exhibit one aircraft engine, two gas turbines, as well as two patented technologies of graphene material and high precision aluminum alloy.

The WZ16, a model of turboshaft engine, jointly developed by the AECC and French aviation giant of Safran, will also be displayed.

The WZ16 can be fitted to a seven-to-eight tonne helicopter, or 13-tonne triple-engine helicopter. On Dec. 20 last year, it completed a successful maiden flight on the AC352, China's first seven-tonne multi-purpose twin-engine helicopter.

Meanwhile, the AECC will exhibit its QD70 gas turbine and 100KW small-sized gas turbine, which can operate on a variety of fuels for multiple uses.

Aircraft and turbo engines are a representative industry for China's industrial development.

The state-owned AECC was set up on Aug. 28, 2016, with a target of accelerating independent research, development and manufacturing of aircraft engines and gas turbines.

Founded in 1984, China Aviation Expo was China's first professional aviation expo. This year it has attracted more than 300 exhibitors from 14 countries and regions.

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[Figaro]

I'm confused about the 2022 remark; are they referring to the WS-15? And what's with the WS-10C remark? Very weird ...

Latest fighter jets to use domestically made engines by 2022: experts
Source

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Editor
Huang Panyue
Time
2017-09-13
China's latest fighter jets will be powered by domestically made engines by 2022, experts said, as a television crew was given a glimpse of a J-11B fighter's radar system and engine.

"More Chinese fighting jets, including the J-10, J11, J-20 and J-31, will be powered by homegrown engines. China's new generation of military jets will all be powered by domestically-made engines within five years," Xu Guangyu, a senior adviser to the China Arms Control and Disarmament Association, told the Global Times.

The J-11B is powered by two domestic-made engines, a China Central Television (CCTV) reporter said, who gained access to a secret warehouse of the Shenyang Aircraft Corporation, a major fighter jet producer located in Northeast China's Shenyang Province. CCTV aired a report on the jet on Tuesday.

"The domestically made engine WS-10C on the J-11B is quite competitive to the previous Russian-made AL31 engine," Xu Yongling, an air force expert at the Chinese Society of Aeronautics and Astronautics (CSAA), told the Global Times.

Newly produced J-11B jets will be powered by the WS-10C, but engines on the current 120 J-11Bs won't be totally replaced due to the high cost, Xu Yongling said.

"China still lags behind in turbofan engines, especially engines that feature domestic single-crystal turbine blades made from metal rhenium," Xu Guangyu explained.

Most of the technology of single-crystal turbine blades is in the hands of State companies, Wang Yanan, chief editor of the Aerospace Knowledge magazine, previously told the Global Times. The Sichuan Province-based Chengdu Aerospace Superalloy Technology Company became China's first company to mass produce single-crystal turbine blades, CCTV had earlier reported.

The participation of private firms in the aviation industry would make production more efficient, Wang said.

Xu Youngling said the military aircraft engine industry is monopolized by State-owned companies, and will still take some time before more private companies enter this high-end industry.

"The domestic engines will be gradually tested on more fighters, Xu Guangyu stressed, adding that it would be strategically beneficial to the army since most fighter jets are powered by Western-made engines.

 

[Deino]

I'm confused about the 2022 remark; are they referring to the WS-15? And what's with the WS-10C remark? Very weird ...

if he means "Latest fighter jets to use domestically made engines by 2022" and connects this with the J-11B-production & WS-10C, I have daubs that then a WS-15 will be ready soon.

 

[Quickie]

I'm confused about the 2022 remark; are they referring to the WS-15? And what's with the WS-10C remark? Very weird ...

Did the air force expert specifically mentioned a WS-10C variant? If so, how would the WS-10C compare to the WS-10B?

 

[Deino]

Did the air force expert specifically mentioned a WS-10C variant? If so, how would the WS-10C compare to the WS-10B?

Just go up to the text he posted:

....
"The domestically made engine WS-10C on the J-11B is quite competitive to the previous Russian-made AL31 engine," Xu Yongling, an air force expert at the Chinese Society of Aeronautics and Astronautics (CSAA), told the Global Times.

Newly produced J-11B jets will be powered by the WS-10C, but engines on the current 120 J-11Bs won't be totally replaced due to the high cost, Xu Yongling said.
...

Nothing more.

 

[Hyperwarp]

WS-10C? What is that?

I am wondering whether the designations "A", "B", "C" have to do with the max thrust

We officially know the Taihang thrust range is 12000 kgf to 14000 kgf (

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My speculations -

WS-10 (Original) - 118 kN?
WS-10A (PLAAF J-11B/BH) - 123 kN?
WS-10H (PLAN J-11BH/BSH, J-15T) - 125 kN?
WS-10B - (PLAAF J-10B #155 & #156) - 130 kN?
WS-10C (PLAAF J-16, J-11B new batches/upgrades?) - 134 kN?
WS-10X (PLAAF J-20, J-11D) - 137 kN

 

[Quickie]

Just go up to the text he posted:



Nothing more.

What I meant was we have only heard of WS-10B, but not WS-10C.

The report suddenly mentioned about WS-10C.

I was wondering if the designation WS-10C was an invention of the reporter, or whether if it actually came out of the expert's mouth.

 

[by78]

WS-10C? What is that?

I am wondering whether the designations "A", "B", "C" have to do with the max thrust

We officially know the Taihang thrust range is 12000 kgf to 14000 kgf (

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,

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)

My speculations -

WS-10 (Original) - 118 kN?
WS-10A (PLAAF J-11B/BH) - 123 kN?
WS-10H (PLAN J-11BH/BSH, J-15T) - 125 kN?
WS-10B - (PLAAF J-10B #155 & #156) - 130 kN?
WS-10C (PLAAF J-16, J-11B new batches/upgrades?) - 134 kN?
WS-10X (PLAAF J-20, J-11D) - 137 kN

According to PUPU, a big shrimp, WS-10B has more than 13.2 metric tons (129.45 kN) of thrust, and its performance was deemed "very good". So one item on your list is confirmed to be on target.