J-20 5th Gen Fighter Thread VIII

[Kich]

An additional picture:View attachment 155584

So far

J-20S:
78933
7893x (Potentially)
7893x (""")
7893x (""")
7893x (""")
78938

Then this image shows
78830. My brain wants to turn that bolded 8 into a 9. It makes more sense for it to be a 9.

J-20A:
78337
78737

It begs the question of how many of the J-20A and J-20S have they built.

 

[gelgoog]

The J-20S would help with pilot training. I assume that would have priority.
Could also serve as a replacement for twin seat Flankers.

 

[ACuriousPLAFan]

The J-20S would help with pilot training. I assume that would have priority.
Could also serve as a replacement for twin seat Flankers.

In addition, I'd think that the J-20S could serve as a 5th-gen counterpart to the J-16-based "Intelligence Victory" platform to train aerial combat AI systems for assisting and complementing the pilots on other types of fighters in the PLAAF (and even the PLAN) in terms of handling tasks that would otherwise be too heavy for single pilots (MUMT being the most prominent to come into mind, among many others). In a sense, the presence of the second pilot on the J-20S should work greatly in training (a.k.a. "teaching") the fighter-based AI systems on how to become a "2nd pilot" for the sole pilot on other fighter types (and perhaps even serving as the 3rd and 4th "pilots" on the J-36).

On the other hand, the J-20S could also open up the possibility of having an EW-variant of the J-20S to complement the J-16Ds (especially once Shenyang AC ended the production run for the Sino-Flanker family), albeit such necessity is still debatable.

 

[taxiya]

I don't think a local newspaper report has any credibility

What about the person in the article being head of the "State Key Laboratory of Crystal Materials"?

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State Key Lab is only designated by the state consul and there are only three such labs in semiconductor area.

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This local paper reporting is similar to if Chengdu Daily reports on CAC activities, there is nothing less credible because the activity is real.

 

[taxiya]

There was a research paper on developing all aspect EOTS from 2020/2021. Wonder if anyone still has a copy of it. They even have real images from the device.

like this? Link to a paper in 2023 below.

Would it happen to be "Wide-area scanning control technology of embedded photoelectric search aiming and indication system" from Journal of Applied Optics?

Maybe not since date is later.

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[SanWenYu]

What about the person in the article being head of the "State Key Laboratory of Crystal Materials"?

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State Key Lab is only designated by the state consul and there are only three such labs in semiconductor area.

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This local paper reporting is similar to if Chengdu Daily reports on CAC activities, there is nothing less credible because the activity is real.

It is also easy to find the relevant information on the web site of Shandong University:

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. It is apparent that their focus have been on SiC and GaN materials.

 

[tphuang]

so Ayi in 2 separate posts mentioned the J20S + J20A squadron to be the most powerful 5th generation aircraft unit. Clearly, people inside China think quite highly of this platform.

Now, we discussed about the additional interior space in J-20A enabled by the hump that's behind the cockpit. just looking at photos, I think J-20S may have even more interior space. That would allow for the high voltage and high power + cooling platform required to power the modern electronics needed for not just the radar, but also rest of the RF and computation unit required to control all the CCAs.

 

[sequ]

3x longer range for J-20 radar from adopting SiC substrate. its GaN-on-SiC..

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3x longer detection range would mean an increase of ~13x the energy output. I don't think that is feasible wrt to cooling etc.

 

[latenlazy]

3x longer detection range would mean an increase of ~13x the energy output. I don't think that is feasible wrt to cooling etc.

The point of GaN on SiC is greater heat absorption. The power itself is reachable because there’s much greater heat sinking at the module level.

It’s also not like you are running the radars on peak power constantly. Ultimately what matters is average rate at which your system adds heat vs average rate at which it transfers it. Much greater peaks don’t always mean much greater averages.

 

[taxiya]

3x longer detection range would mean an increase of ~13x the energy output. I don't think that is feasible wrt to cooling etc.

You are talking about bruteforcefully increasing the detection range by the same semiconductor material. The article is talking about NEW generation of semiconductor material (SiC) which has higher engergy efficiency to output more useful radio waves without increasing input power, which also has lower noise level that increase signal to noise ratio that can detect incoming signals (bounced off target) that would not be detected by old receivers of higher noise level.