Chinese Engine Development

[MortyandRick]

China dominating almost entire ball point bearing industry 85%, Japan 10% and Switzerland 5%. Before 2017, China produced 0%

Where did you get this data ? I couldn't find it

 

[Michael90]

I think having 2 or 3 engine companies would be better .. having a competition even within China is great, China is a huge country and can afford even 3-4 advanced engine companies

Unlike UK and France which only have one advanced engine company. The US have 2

That matter more when the market has grown organically and the tech base is already solid. For China who is still a new entrant in this sector, she need a huge behemoth to shoulder the R$D cost involve with no guarantee of sucess. Something non state owned companies can't afford to do i believe. Is there any chinese private company that makes jet engines?

 

[sutton999]

( 130 daN * s / kg ) = 1300 N * s / kg
( 1300 N*s/kg ) * (100 kg/s) = 130000 N
130000 N / (9.8 N/ kg) = 13.265 Ton

Someone suggests 130kn is the target of this design.

 

[ACuriousPLAFan]

( 130 daN * s / kg ) = 1300 N * s / kg
( 1300 N*s/kg ) * (100 kg/s) = 130000 N
130000 N / (9.8 N/ kg) = 13.265 Ton

Someone suggests 130kn is the target of this design.

Source of this information?

 

[latenlazy]

( 130 daN * s / kg ) = 1300 N * s / kg
( 1300 N*s/kg ) * (100 kg/s) = 130000 N
130000 N / (9.8 N/ kg) = 13.265 Ton

Someone suggests 130kn is the target of this design.

Keep in mind that not all mass flow intake is used for thrust.

 

[MeiouHades]

The design probably has the potential to reach around 120-ish kN.

 

[sunnymaxi]

That matter more when the market has grown organically and the tech base is already solid. For China who is still a new entrant in this sector, she need a huge behemoth to shoulder the R$D cost involve with no guarantee of sucess. Something non state owned companies can't afford to do i believe. Is there any chinese private company that makes jet engines?

there are couple of private companies in this sector but they do manufacturer small/medium category class Engines mostly for business jets and drones.
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China has multiple state owned players in Aero Engine but all are comes under AECC. Aero Engine Corporation of China(AECC) is an organization not a single company, they are responsible of China's Aero Engine development in all categories. it was formed in 2016. it has 27 directly affiliated companies. with over 70,000 direct employees across China.

for commercial Engines, Shanghai branch is responsible. for military Engines there are Shenyang , Xian , Harbin , Guiyang and many more.

 

[ACuriousPLAFan]

Some comments on the recent publishing of the alleged specifications of the WS-19:

https://twitter.com/i/web/status/1976476780543488144

Thread unrolled:

Assuming recent string of leaks for the WS-19 are accurate, people are highlighting the wrong figures to be excited about.

The real eye poppers are the specs for the low pressure compressor (LPC) and high pressure compressor (HPC). The LPC supposedly has a pressure ratio of 5 with 3 stages, while the HPC has a pressure ratio of 7 with 5 stages.

For those who are unfamiliar with the working mechanics of jet engines, in crude terms they work by squeezing air, lighting it on fire, and expelling it back out as the heated airstream re-expands to atmospheric pressure.

So the first order factor for performance is driven by air compression efficiency, both because more compression means more re-expansion and thus more force from the expelled airstream, and because more compression means higher oxygen concentration for the combustion stage, which in turn means more efficient burn and thus greater energy imparted to the airstream per unit of fuel-air mix.

For comparison, the F119 and F135 engines (which share the same engine core architecture) used in the F-22 and F-35 get a HPC compression ratio of 6 with 6 stages. The EJ200 used in the Eurofighter has a HPC compression ratio of 6 with 5 stages, and the Al-51, the engine upgrades for the SU-57, allegedly has a HPC compression ratio of 6.5 with 5 stages.

Hence, if these leaks are in fact representative of the WS-19’s real specs that would suggest, the WS-19’s engine architecture is the most advanced for its generation of engines, and if it enters service soon, that would also make it the most advanced fighter engine currently in production.

Some will point to a lower turbine inlet temperature relative to an engine like the F135 as a point of deficiency.

But from a holistic performance standpoint, if the WS-19 achieves the same range of specific thrust numbers (a measure of how much force the engine generates per unit mass of air it intakes) with a lower fuel burn, that actually means the engine is able to extract more work from the airstream with less heat, indicating superior engine efficiency, and it would make absolute sense to bank in gains with fuel efficiency and engine servicing burdens if you can hit your target requirements, rather than pushing TIT to its limits.

In short, *IF* these leaks are the real deal, the speed with which the WS-19 was developed (7-8 years) combined with the level of design capability its alleged specs would indicate should spell very good things for the future of China’s gas turbine and jet engine development.

 

[latenlazy]

Some comments on the recent publishing of the alleged specifications of the WS-19:

https://twitter.com/i/web/status/1976476780543488144

Thread unrolled:

You should stop citing that account. Dude just regurgitates stuff he scrapes off here.

 

[ACuriousPLAFan]

You should stop citing that account. Dude just regurgitates stuff he scrapes off here.

I think I may have missed some.