Chengdu J-20 5th Generation Aircraft News & Discussions

[marshall]

And what was he guilty of? An engines quality is only as good as its manufacturing process allows it to be, meaning if you have precision machinery you will have precise components. If you have employees with the latest tools you will have the best quality, meaning that instead of traditional wrenches you give them torque wrenches which will allow for precise torque specifications.

Taking funds for R&D as well as manufacturing equipment upgrade to invest in stock market.

This doesn't sound right. The WS-10 engine had quality issues for years and we all know it was attributed to over-reliance on the individual technicians working on each individual engine. Manufacturing equipment is usually installed on a planned schedule so why would China allow needed manufacturing equipment go uninstalled and unordered for many years while the WS-10 project languished with quality issues? Plus, lack of R&D funds would be detected very quickly by the other managers if lack of R&D were a known issue.

The fact that the WS-10 had quality issues for many years after it's initial certification means this excuse is either BS or that the embezzler was made a scapegoat. It's more likely they either found flaws after the engine was already certified or simply didn't have the required technical capability for effective mass production until years later.

 

[muse]

J9 seems like a Sovietized version of the Saab Viggen - anyway, something good came from it.

The fact that the WS-10 had quality issues for many years after it's initial certification means this excuse is either BS or that the embezzler was made a scapegoat. It's more likely they either found flaws after the engine was already certified or simply didn't have the required technical capability for effective mass production until years later.

Like the way you think.

 

[S10]

This doesn't sound right. The WS-10 engine had quality issues for years and we all know it was attributed to over-reliance on the individual technicians working on each individual engine. Manufacturing equipment is usually installed on a planned schedule so why would China allow needed manufacturing equipment go uninstalled and unordered for many years while the WS-10 project languished with quality issues? Plus, lack of R&D funds would be detected very quickly by the other managers if lack of R&D were a known issue.

The fact that the WS-10 had quality issues for many years after it's initial certification means this excuse is either BS or that the embezzler was made a scapegoat. It's more likely they either found flaws after the engine was already certified or simply didn't have the required technical capability for effective mass production until years later.

He asked why he was convicted, and I answered. It does not address the quality issue.

You obviously haven't read about the interal office conflicts within AVIC I, but I am in no mood to type 20 pages of details either. Look up current 林左鸣, and you'll get a glimpse of why the engine industry performed so poorly in the last few years. Bottom line, quality problems are related to management, not with any flaws in design.

 

[ChineseTiger1986]

As for now, Taihang engine has quantity issue, not the quality one.

 

[rcrmj]

There is zero room, absolutely zero room for any issues in an engine design, minor or not, the slightest imperfection with the compressor blades could cause a catastrophic failure, a loose screw or loose faulty gasket can also cause a catastrophic failure.
.

then please educate us why russian engines only having few hunder hourse life spam, but Chinese and Western engines have few thousands? as according to your limited knowledge that every engine has to be perfect otherwise 'catastrophy'``

the major issue WS-10 had in the past was the quality consistancy of the fac blades during production... not the design of the WS itself.

there are 41 WS-10 engines were produced and non-stop tested since late 1990s, (life spam 1600 hrs like double those of AL-31s) for last few years the main focus was to improve WS production line quality control management not the technical design of WS.

 

[siegecrossbow]

New flight photos from the 23rd:

 

[houshanghai]

J20 had flown at least 5 times for two days..

 

[Dark Eagle]

J-2x is a single engine NAVY variant??

 

[Akasa]

J-2x is a single engine NAVY variant??

It is able to be turned into one.

 

[ptldM3]

then please educate us why russian engines only having few hunder hourse life spam, but Chinese and Western engines have few thousands? as according to your limited knowledge that every engine has to be perfect otherwise 'catastrophy'``

the major issue WS-10 had in the past was the quality consistancy of the fac blades during production... not the design of the WS itself.

there are 41 WS-10 engines were produced and non-stop tested since late 1990s, (life spam 1600 hrs like double those of AL-31s) for last few years the main focus was to improve WS production line quality control management not the technical design of WS.

The 117S as well as RD-33 both have a 4,000 hour life. Anything else you want to add?

 

[ChineseTiger1986]

The 117S as well as RD-33 both have a 4,000 hour life. Anything else you want to add?

On the paper for sure.

 

[S10]

J-2x is a single engine NAVY variant??

No, naval one will start competition soon, based on either J-20 or SAC's conventional design. J-2X is a side project funded by CAC designed for export, with Pakistan in mind.

 

[ptldM3]

On the paper for sure.

By that token we can expect the WS-10's poor 1600 hour life to also be a paper claim....

 

[ChineseTiger1986]

By that token we can expect the WS-10's poor 1600 hour life to also be a paper claim....

Another blank cheque just like claiming build 5-6 carrier battlegroups which you have built none so far.

Gimme a break, the 117 engine with 4000 hours of lifespan? Who are you trying to fool?

 

[April.lyrics]

J20 had flown at least 5 times for two days..

yeah,one witness(机外停车 in the picture) said J-20 flew 3 time on Sep.22nd.

Just the next day,on Sep.23rd,J-20 was pulled out before 10 a.m.and did some roll in the sky and 机外停车 photoed them。