Chinese Engine Development

Hendrik_2000

Hendrik_2000

Lieutenant General
Via Cybernetic the most notable new is cast hollow turbine blade and coule with the news of laser precision drilling that portend well for the difficult to make and demanding first stage turbine blade that need aircooling to mitigate the high temperature it exposed to
turbine-blade-png.450918


turbine-blade-2-png.450919


turbine-blade-3-png.450920
 
T

Tirdent

Junior Member
Registered Member
Interesting... seems they have access to TiAl technology after all. Maybe the CJ-1000A info WAS poorly translated, or it isn't used on the demonstrator since ground testing isn't weight critical.
 
Quickie

Quickie

Colonel
Hendrik_2000 said:
Via Cybernetic the most notable new is cast hollow turbine blade and coule with the news of laser precision drilling that portend well for the difficult to make and demanding first stage turbine blade that need aircooling to mitigate the high temperature it exposed to
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cast hollow turbine blade and coule with the news of laser precision drilling
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That would be one of the most difficult, if not the most difficult part, of jet engine manufacturing. So things are looking more positive than what has been previously reported.
 
siegecrossbow

siegecrossbow

General
Staff member
Super Moderator
Quickie said:
That would be one of the most difficult, if not the most difficult part, of jet engine manufacturing. So things are looking more positive than what has been previously reported.
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China has the material/fabrication part of turbofan engine down in the past few years. The primary challenge now is engine design.
 
L

latenlazy

Brigadier
siegecrossbow said:
China has the material/fabrication part of turbofan engine down in the past few years. The primary challenge now is engine design.
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Optimistically speaking, they might be more or less at a point where they can surmount that hurdle too, but because the development cycle for engines are so long that won’t be immediately obvious in a production item for at least another few years.
 
O

Orthan

Senior Member
Is there any news of late of these programs ? When will WS-20 enter service? when will WS-15 enter flight test? I see a lot of industry info but not on those programs.
 
SinoSoldier

SinoSoldier

Colonel
A few sources close to the engine project (or so they claim) disclosed the following to SCMP:
  • There remains critical issues stemming from an accident in 2015 involving WS-15
  • These "issues" have not been resolved
  • A WS-15 engine rigged for ground tests exploded in 2015, but nobody was injured
  • Sources claim that the J-20 currently uses WS-10B
  • Explosion (confirmed by two separate sources) was likely caused by quality-control issues with its single-crystal turbine blades
  • While Chinese engineers were able to develop single-crystal turbine blades, they have not been able to apply it to a mass-produced engine version
  • Fixing these issues will take a lot of time
  • J-20 might later switch to the WS-10IPE until the WS-15 can be developed
  • The PLAAF rushed J-20 into service after hearing about the JMSDF topping out its Izumo-class LHAs for F-35B use
My commentary:

It seems that it will be a long time until the J-20 can reach the kinematic performance of the F-22 and Su-57; the USAF and RuAF would maintain considerable lead in terms of the deployment of 5th generation fighters for now, and the gap will only grow once they introduce newer subsystems onto their existing airframes. One possible solution would be for the PLAAF to import additional Su-35s and salvage their engines for use, or allocate some funds into the FC-31 + WS-19 projects as a temporary stop-gap.

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L

latenlazy

Brigadier
SinoSoldier said:
A few sources close to the engine project (or so they claim) disclosed the following to SCMP:
  • There remains critical issues stemming from an accident in 2015 involving WS-15
  • These "issues" have not been resolved
  • A WS-15 engine rigged for ground tests exploded in 2015, but nobody was injured
  • Sources claim that the J-20 currently uses WS-10B
  • Explosion (confirmed by two separate sources) was likely caused by quality-control issues with its single-crystal turbine blades
  • While Chinese engineers were able to develop single-crystal turbine blades, they have not been able to apply it to a mass-produced engine version
  • Fixing these issues will take a lot of time
  • J-20 might later switch to the WS-10IPE until the WS-15 can be developed
  • The PLAAF rushed J-20 into service after hearing about the JMSDF topping out its Izumo-class LHAs for F-35B use
My commentary:

It seems that it will be a long time until the J-20 can reach the kinematic performance of the F-22 and Su-57; the USAF and RuAF would maintain considerable lead in terms of the deployment of 5th generation fighters for now, and the gap will only grow once they introduce newer subsystems onto their existing airframes. One possible solution would be for the PLAAF to import additional Su-35s and salvage their engines for use, or allocate some funds into the FC-31 + WS-19 projects as a temporary stop-gap.

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Click to expand...
How did I guess that this was a Minnie Chan story.
 
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