Chinese Aero Engine information thread

[kungfugymnast]

You watched this too? I yawned numbers of times and skipped when watching. Narration is dull, don't know why narrators of China documentaries like to lower tone and mumbling thinking that it's stylish to do so. Back in older days narrators would narrate in fun or exciting presentation, not like this. Also they like to copy bad influence lighting from some western movies by placing dark tinted filters on camera lense and overdone it with too dark.

 

[LKJ86]

Via @中国航发 from Weixin

 

[HRK]

View attachment 712186
Via @中国航发 from Weixin

which engine is this ..... and specification plz ???

 

[siegecrossbow]

which engine is this ..... and specification plz ???

WS-10 for either J-10C or J-20.

 

[CAPRICORN-88]

WS-15????

 

[Polestar 2]

View attachment 712186
Via @中国航发 from Weixin

I think its WS-10 engine.

 

[samsara]

From OedoSoldier @OedoSoldier on 2021.02.01:

The CJ-1000 engine to be installed on the C919 uses a special titanium-aluminum alloy fan blade developed by the Institute of Metal Research (IMR), Chinese Academy of Sciences, and has twice the specific gravity of conventional nickel-based alloys. The development of CJ-1000 is going well, and CJ-2000 is also being promoted.

The core engine of CJ-2000 succeeded in the first ignition on March 5th last year, achieving a maximum rotation of 100.6%.

https://twitter.com/x/status/1356194148882112514

The Institute of Metal Research (IMR), CAS 中国科学院金属研究所 was founded in 1953, and has its HQ in Shenyang, the capital and largest city of Liaoning Province. Since then, IMR has firmly established itself as an indispensable base for materials science and engineering research in China.

* * * * *

Introducing nanostructure into materials like metals can produce surprising results. Making the grain size smaller in some metals such as copper can increase strength. Other material properties like conductivity, ductility, and melting point can also be affected by the nanostructure.

Professor Ke Lu wants to understand the mechanisms underlying these findings and develop ways of nanostructuring materials to control their properties. He has created a research group at the Shenyang National Laboratory for Materials Science (SYNL) to explore these questions and provide potential answers for real-world applications. The Institute of Metal Research (IMR) in Shenyang, which is part of the Chinese Academy of Sciences (CAS), is home to Lu’s Nanometals Group.

Lab profile: Professor Ke Lu, Institute of Metal Research, CAS

Lab profile: Ke Lu, Institute of Metal Research, CAS - Materials Today

Ke Lu's research focuses on processing nanostructured metals and their mechanical behavior.

www.materialstoday.com

 

[LKJ86]

 

[Deino]

View attachment 714419

Can anyone give a translated summary please in order to estimate its reliability?

By the way ...

via

https://twitter.com/x/status/1358741931652567040

 

[Figaro]

Can anyone give a translated summary please in order to estimate its reliability?

By the way ...

View attachment 714897

via

https://twitter.com/x/status/1358741931652567040

Looks extremely suspicious. The WS-15 has a max thrust of only 150 kN, which is just a few more than the latest WS-10 variant in the mid 140s. Also the thrust to weight ratio looks suspicious as well since it was a clear goal to get the TWR up to 10.

 

[Deino]

As per @horobeyo/Twitter this seems to be related to the WS-15, but can anyone please provide a translation?!

Thanks in advance.

https://twitter.com/x/status/1361750578783653888

 

[sheik]

As per @horobeyo/Twitter this seems to be related to the WS-15, but can anyone please provide a translation?!

Thanks in advance.

https://twitter.com/x/status/1361750578783653888

View attachment 717020

According to official reports, the progress of WS-15 in late 2018 was comparable to the progress of WS-10 at 2001. Thus its design would be finalized at around 2022 and the mass production would be started in 2024-2025. This also verified the words from CAE academician, Liu Daxiang. In his public talk in mid 2018, Liu said the design of the 4th generation of engines would be finalized in 3 to 5 years.

 

[CAPRICORN-88]

The F-35’s Engine Is a Bit Busted Right Now
Between cracked turbine blades and slow repair periods, things aren't going so great.

By Kyle Mizokami FEB 18, 2021
PopularMechanic

The Pentagon says a slowdown in the delivery of F-35 fighter jet engines could sideline scores of Air Force F-35As by 2025.
The F135 engine is experiencing longer repair periods, and high temperatures are producing cracks in turbine blades.
These problems have forced the Air Force to reduce appearances by the service’s F-35 air show team.

The U.S. Air Force’s F-35 fighter fleet is running into yet another problem: a shortage of engines.

Five years after declaring the F-35 ready for combat, the Air Force is discovering the aircraft’s Pratt & Whitney F135 engine takes longer to maintain than originally projected. A heat-related issue is also causing cracks in the F135’s fan blade coatings. If left unchecked, the problem could reportedly ground up to 20 percent of the Air Force’s F-35s by 2025.

The F-35 Joint Strike Fighter is a single-engine jet fighter designed for both air-to-air and air-to-ground combat. The F-35’s engine, the F135 afterburning turbofan, produces 28,000 pounds of thrust, or 43,000 pounds of thrust with afterburner on. The F135 powers the entire F-35 fleet, including the Marine Corps’ short vertical takeoff and landing -B model, allowing the aircraft to take off vertically if needed.

F-135 pratt whitney f 35
An F135 engine undergoing testing.
U.S. AIR FORCE

The F135 Heavy Maintenance Center at Tinker Air Force Base isn’t processing engines and getting them out to the jet fleet as fast as anticipated, Bloomberg reports. The problem is exacerbated by the engines being run at higher temperatures than originally planned, leading to several engines developing cracks in the coatings of their turbine blades. Maintainers are replacing these blades as they discover them

 

[kungfugymnast]

The F-35’s Engine Is a Bit Busted Right Now
Between cracked turbine blades and slow repair periods, things aren't going so great.

By Kyle Mizokami FEB 18, 2021
PopularMechanic

The Pentagon says a slowdown in the delivery of F-35 fighter jet engines could sideline scores of Air Force F-35As by 2025.
The F135 engine is experiencing longer repair periods, and high temperatures are producing cracks in turbine blades.
These problems have forced the Air Force to reduce appearances by the service’s F-35 air show team.

The U.S. Air Force’s F-35 fighter fleet is running into yet another problem: a shortage of engines.

Five years after declaring the F-35 ready for combat, the Air Force is discovering the aircraft’s Pratt & Whitney F135 engine takes longer to maintain than originally projected. A heat-related issue is also causing cracks in the F135’s fan blade coatings. If left unchecked, the problem could reportedly ground up to 20 percent of the Air Force’s F-35s by 2025.

The F-35 Joint Strike Fighter is a single-engine jet fighter designed for both air-to-air and air-to-ground combat. The F-35’s engine, the F135 afterburning turbofan, produces 28,000 pounds of thrust, or 43,000 pounds of thrust with afterburner on. The F135 powers the entire F-35 fleet, including the Marine Corps’ short vertical takeoff and landing -B model, allowing the aircraft to take off vertically if needed.

F-135 pratt whitney f 35
An F135 engine undergoing testing.
U.S. AIR FORCE

The F135 Heavy Maintenance Center at Tinker Air Force Base isn’t processing engines and getting them out to the jet fleet as fast as anticipated, Bloomberg reports. The problem is exacerbated by the engines being run at higher temperatures than originally planned, leading to several engines developing cracks in the coatings of their turbine blades. Maintainers are replacing these blades as they discover them

F-135 engine is pushing the limit generating 43,000lb max thrust is something beyond F-22's P&W F-119 & GE F-120 36,000lb. The intense heat will be far higher along with fast wear and tear if materials used for the compressor blades and cooler can't take it for long.

The WS-15 is larger than WS-10C and should be able to generate higher thrust by few thousand if required. It depends whether J-20B needed 40,000lb or 36,000lb is adequate.

 

[White and Green with M/S]

F-135 engine is pushing the limit generating 43,000lb max thrust is something beyond F-22's P&W F-119 & GE F-120 36,000lb. The intense heat will be far higher along with fast wear and tear if materials used for the compressor blades and cooler can't take it for long.

The WS-15 is larger than WS-10C and should be able to generate higher thrust by few thousand if required. It depends whether J-20B needed 40,000lb or 36,000lb is adequate.

Engine designed on fighter jets in mind, and F-35 has single F-135 and its a high by pass ratio turbofan where F-119 low by pass turbofan and F-22 using 2 of these and as for J-20B is slightly longer and heavier than rest of the 5th gen jets so its needs at least 40,000 lbs engine to compensate weight issue and do remember WS-15 is low by pass engine