J-20 5th Gen Fighter Thread VIII

Alfa_Particle

Junior Member
Registered Member
Hmm ... that image is allegedly two months old

Also, it's interesting to note that a couple comments he (OP) made are wrong. The WS-10C already uses DD9 monocrystalline blades, and the WS-15 will use DD15 blades AFAIK. He could've mistaken the pre-2018 spec WS-15s with current WS-15s.

He also claims that:
The WS15 has neither [double wall transpiration cooling] nor the 4th generation cobalt monocrystalline super alloy. The turbine temperature might even be lower than the 2073K of the XF91 (although 2073K is already very high). Even the [mass flow rate] is not as good as the 23kg/s air flow of the standard engine AL-51F1, and it isn't even a VCE to compensate for it with variable bypass.

Sure as hell doesn't sound like the revamped WS-15 to me. @sunnymaxi What do you reckon?

P.S. As for being a VCE... Anyone remember my crackpot WS-15/F120 theory? /jk
 
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TK3600

Major
Registered Member
I wonder hows subsysyems in J-20A. WS-15 has major power upgrade. This means:

A: it has surplus power, and will soon get new subsystems to use extra power.
B: it already got new power intensive upgrade in J-20A, and WS-10 is underpowered. WS-15 make these systems operating at original specs.
 

latenlazy

Brigadier
Also, it's interesting to note that a couple comments he (OP) made are wrong. The WS-10C already uses DD9 monocrystalline blades, and the WS-15 will use DD15 blades AFAIK. He could've mistaken the pre-2018 spec WS-15s with current WS-15s.

He also claims that:


Sure as hell doesn't sound like the revamped WS-15 to me. @sunnymaxi What do you reckon?

P.S. As for being a VCE... Anyone remember my crackpot WS-15/F120 theory? /jk
Don’t believe everything you read on the internet.
 

BoraTas

Captain
Registered Member
Also, it's interesting to note that a couple comments he (OP) made are wrong. The WS-10C already uses DD9 monocrystalline blades, and the WS-15 will use DD15 blades AFAIK. He could've mistaken the pre-2018 spec WS-15s with current WS-15s.

He also claims that:


Sure as hell doesn't sound like the revamped WS-15 to me. @sunnymaxi What do you reckon?

P.S. As for being a VCE... Anyone remember my crackpot WS-15/F120 theory? /jk
Fourth generation cobalt superalloy :D:D Cobalt superalloys have different characteristics and therefore are used in different parts. There is nothing "new generation" about them either. They are just a different family of alloys with their own uses. It is an arbitrary classification but when you say fourth generation superalloy you are generally talking about nickel superalloys with ruthenium content.

Furthermore, he is making things up. He can't know what alloy the WS-15 is using or its airflow.
 

latenlazy

Brigadier
Fourth generation cobalt superalloy :D:D Cobalt superalloys have different characteristics and therefore are used in different parts. There is nothing "new generation" about them either. They are just a different family of alloys with their own uses. It is an arbitrary classification but when you say fourth generation superalloy you are generally talking about nickel superalloys with ruthenium content.

Furthermore, he is making things up. He can't know what alloy the WS-15 is using or its airflow.
You can take some guesses at what alloy the WS-15 is using based on some publicly sourced information (such as what we get from aerospace exhibits) and research papers (you can get quite a lot of hits just searching up alloy names like DD9 and DD12)
 

sunnymaxi

Captain
Registered Member
Also, it's interesting to note that a couple comments he (OP) made are wrong. The WS-10C already uses DD9 monocrystalline blades, and the WS-15 will use DD15 blades AFAIK. He could've mistaken the pre-2018 spec WS-15s with current WS-15s.

He also claims that:


Sure as hell doesn't sound like the revamped WS-15 to me. @sunnymaxi What do you reckon?

P.S. As for being a VCE... Anyone remember my crackpot WS-15/F120 theory? /jk
first of all there is difference between cobalt superalloys and monocrystalline blades.. but since he is talking about DD9 being used in WS-15. that is high pressure single crystal superalloy blade.

DD6 = 2nd generation
DD9 = 3rd generation
DD15 = 4th generation

e50ad287fe8651b5c81154b8fc86fa8cv5.jpg

DD15 literally display at Zhuhai Air Show 2021 for public.. at that time, this was the most advance high pressure single crystal superalloy manufactured in China. temperature capacity can reach 1200° Celsius without any coating.. and everybody knows the pattern of China. they don't display latest tech unless its successor is already under development or near completion..

so in 2021, 4th generation being displayed in air show.. if you check my old massages, 5th generation single crystal superalloy was under development back in 2021 and we are about to enter in 2025.. remember what Liu Daxiang said in his presentation. ''we also have successfully did breakthrough in next generation engine technologies''..

nobody knows what material/components being used in WS-15 engines.. but we can only guess through bidding information and some inside information..

DD15 being available in 2021 and WS-15 material selection has completed in 2023. now you can guess what components can be used in WS-15 engines.
 

taxiya

Brigadier
Registered Member
Also, it's interesting to note that a couple comments he (OP) made are wrong. The WS-10C already uses DD9 monocrystalline blades, and the WS-15 will use DD15 blades AFAIK. He could've mistaken the pre-2018 spec WS-15s with current WS-15s.

He also claims that:


Sure as hell doesn't sound like the revamped WS-15 to me. @sunnymaxi What do you reckon?

P.S. As for being a VCE... Anyone remember my crackpot WS-15/F120 theory? /jk
I am surprised that you take words from this kind of personality seriously. o_O:D The profile list everything IT is interested except science and technology. I won't expect anything that is fact based from a person who is only interested in weird ideologies.
1725832936694.png
 
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