Chinese Engine Development

SinoSoldier

SinoSoldier

Colonel
2017 seems to have been a major year for Chinese engine milestones, and in such a short span of time:
  • WS-10X with stealthy nozzles spotted on J-20 #2021
  • WS-10X with TVC nozzles and ceramic tiles spotted on J-10B
  • WS-19 engine nearing prototype completion
  • WS-20 engine nearing developmental completion
  • CJ-1000 engine technology demonstrator completed
 
A

antiterror13

Brigadier
SinoSoldier said:
2017 seems to have been a major year for Chinese engine milestones, and in such a short span of time:
  • WS-10X with stealthy nozzles spotted on J-20 #2021
  • WS-10X with TVC nozzles and ceramic tiles spotted on J-10B
  • WS-19 engine nearing prototype completion
  • WS-20 engine nearing developmental completion
  • CJ-1000 engine technology demonstrator completed
Click to expand...

Do you think WS-10X already in mass production?
 
Hyperwarp

Hyperwarp

Captain
antiterror13 said:
Do you think WS-10X already in mass production?
Click to expand...

If by WS-10X they mean the most powerful version of the current line of the WS-10 series (14000 kgf / 137 kN) then probably already in or at least very close to mass production. They gave the thrust range for the WS-10 series back in 2014 (12000 kgf - 14000 kgf).
 
Hendrik_2000

Hendrik_2000

Lieutenant General
From Henri K when they say core engine does that mean the compressor and the hot turbine section minus the fan?
The assembly of the CJ-1000AX, the first prototype of the Chinese CJ-1000A engine designed to propel the C919 airliner, is complete. Its core engine has been in testing for 39 days and has reached 100% of its rotation speed in stable operation. Commissioning is scheduled for 2025
2025
@SinoSoldier see we have debate when C919 first fly. You deride C919 as IPhone on the sky because it use many foreign component. But development of large jet engine take time and it is the first time China attempt to built civilian jet liner
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K

Klon

Junior Member
Registered Member
SinoSoldier said:
2017 seems to have been a major year for Chinese engine milestones, and in such a short span of time:
  • WS-10X with stealthy nozzles spotted on J-20 #2021
  • WS-10X with TVC nozzles and ceramic tiles spotted on J-10B
  • WS-19 engine nearing prototype completion
  • WS-20 engine nearing developmental completion
  • CJ-1000 engine technology demonstrator completed
Click to expand...
It seems quite possible a tipping point has been reached (even if not precisely in 2017, maybe between 2015 and 2020).
 
I

Inst

Captain
My point about Kaveri is that the WS-10 project got held up far longer than it should have. It's sort of a heavy-fighter vs light-fighter problem; middle-weight engines tend to be excellent for light fighters, look at the Rafale and Eurofighter's TWR, but are terrible for heavy fighters as you'd need more than 2 engines to provide appreciable power. If China had chosen to focus on WS-13, instead of WS-10, and left the Sinoflankers to Russian AL-31s, the Flankers likely would have gotten less far than they did, and the Russians would have had more leverage in negotiations, but the J-10 project would have gotten further.

A heavy middle-weight engine in the WS-15 class might have been slightly more challenging to produce than without the WS-10 fiascos, but China would be emerging from a position of strength, not weakness.
 
Hendrik_2000

Hendrik_2000

Lieutenant General
China completes assembly of first high-bypass turbofan engine
29 DECEMBER, 2017
SOURCE: FLIGHTGLOBAL.COM BY: STEPHEN TRIMBLE

A Chinese manufacturer has completed an 18-month assembly process for the first CJ-1000AX demonstrator engine for the Comac C919 airliner, a government ministry says on 29 December.
The demonstrator will be used to help validate the engine’s advanced technologies, China’s Ministry of Industry and Information Technology (MIIT) says in a news release.

China plans to build 24 more CJ-1000A prototype engines to support an airworthiness certification campaign, with entry into service targeted after 2021.

The news release reveals two new dimensions of the indigenous Chinese rival to the CFM International Leap-1C to power the C919.

The CJ-1000AX has a diameter of 1.95m (76.8in) and a length of 3.29m (10.7ft), the release says. That compares to the 1.98m diameter and 3.32m length of the Leap-1C. The shorter length of the CJ-1000AX is likely explained by a design that compared to the Leap-1C uses one fewer stage of rotating blades in the low pressure turbine.

In many other respects, the Chinese manufacturer – AECC Commercial Aircraft Engine (ACAE) – and CFM use a similar configuration, with a two-spool layout, featuring a one-stage fan, three-stage booster, 10-stage high-pressure compressor and two-stage high-pressure turbine. The CJ-1000AX uses six stages in the low pressure turbine, compared to seven in the Leap-1C.

But the engine designs also reveal sharp differences in the use of advanced technologies. ACAE has not selected a fan drive gear system for the CJ-1000A, but it does use Rolls-Royce-style hollow-titanium, wide-chord fan blades, according to the MIIT release. By contrast, CFM uses an equal number of 18 blades, but they are made of carbonfibre.

The MIIT release also discloses that ACAE is 3D printing the fuel nozzles for the CJ-1000AX’s single-annular combustor.

In 2012, a Texas-based consultancy named Lucintel published a turbofan market forecast showing plans by China to develop three versions of the CJ-1000. A roughly 25,000lb-thrust CJ-1000AX demonstrator would come first, followed by a 28,000lb-thrust “A” version for production and finally a roughly 27,000lb-thrust “B” model for extended range aircraft.
 
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