Chengdu next gen combat aircraft (?J-36) thread

Eridani

Just Hatched
Registered Member
Back to that image (and sorry, if I missed it), this is a reply I got on X:

Here's a revised version of your English text, incorporating your feedback and aiming for a more natural and polished tone:


Some people believe this image is fake. Because there are several key design differences: it is not a double delta wing, and both the dorsal intake's position and the split drag rudders' shape don't align with the J-36 we've previously seen in Chengdu.

However, if we operate under the assumption that this image is genuine(like you mentioned, why would they fake an image in Xi'an)
Then we can draw some interesting conclusions:
  • Wing Leading Edge: The aircraft in this image features a wing leading edge that appears to be a single, straight line, rather than a two-segment or "folded" design.
    • Speculation: This might suggest that the designers have found alternative methods to compensate for low-speed maneuverability in a flying wing design, allowing them to unify the sweep angle. OR, it could indicate a stronger emphasis on optimizing for high-speed performance, with a willingness to accept some compromises at lower speeds. OR, they made a compromise between high speed and low speed.
  • Dorsal Intake: The dorsal air intake on this aircraft appears to be positioned much higher than that on the J-36 observed in Chengdu.
    • Speculation: This higher placement could be an attempt to improve the intake's efficiency and performance, particularly at higher angles of attack.
Again, these analyses are purely speculative and depend entirely on the image's veracity. If it is indeed real, it could imply that the J-36 seen in Chengdu was merely an early prototype, and the program's development has progressed more rapidly than anticipated, with a more advanced variant now undergoing flight testing at Yanliang.

Feel free to correct me.
 

Eridani

Just Hatched
Registered Member
And I missed one thing:

The leading edge of the inner wing section (or the first "fold line") has a reduced sweep angle can explain the forward-shifted dorsal air intake. This smaller sweep, at high angles of attack, could lead to insufficient airflow caused by vortex shedding, hence the necessity to move the dorsal intake forward, see the pic.Screenshot from 2025-06-02 16-50-49.png

Based on this analysis, it appears sacrifices might have been made in both high-speed and low-speed performance. What would be the motivation for such a compromise? Perhaps the extreme stealth offered by a diamond-shaped wing? (This last point would only hold true if the wing shape is deemed to impact stealth more significantly than the forward-shifted dorsal intake.)
 

Staedler

Junior Member
Registered Member
I'd also like to add. Watching @looon bring up a series of VERY understandable and likely valid contentions only to be mocked, ridiculed, and then as far as I'm aware very publically reprimanded by admin staff on this forum was very disconcerting and uncomfortable to watch.

Even if the photo is not a fake, some trick of the light, maybe an alternate prototype or an entirely new jet all together (unlikely), then those avenues should be explored instead of going "haha funny jet looks ugly" and then dogpiling the first guy with an objection just because they write a bit funny due to a translator.

I think they brought it on themselves with their response. When told their response was strange and not understandable, they decided to double down and start saying the forum was of poor quality and people (not him) had poor English and can't read professional journals.

This was already apparent from the earlier claims of the picture being from a Taiwanese disinformation campaign without evidence. He followed up by essentially calling anyone who asked for evidence to this extraordinary claim an ignorant foreigner.

Nobody likes being condescended to, especially by someone displaying such rude and arrogant behavior. The pushback was entirely predictable.
 

Moonscape

Junior Member
Registered Member
That is a pretty awesome view of the J-36!

Posted by @琴石2022 on Weibo.

View attachment 150505

View attachment 153301The model plane‘s dorsal intake has the correct height but the position is further forward than the real thing.

Today, I went to find the exact location of that highway toll booth relative to the airfield, and made an interesting discovery - the road running along the south side of the CAC airfield is actually part of G318, arguable the most famous 国道. It starts at People's Square in Shanghai and runs to the Nepal border, and includes 川藏路--the Chengdu to Lhasa portion.

It really is kind of awesome that China is building and test flying its most advanced, secret fighter from an airfield immediately adjacent to one of the most romanticized routes in the country. It's the equivalent of Groom Lake being built next to Route 66 in the east LA suburbs.

j36-road1.jpg


j36-road2.jpg
 

Kich

Junior Member
Registered Member
Let’s stop and reflect here.

In Alfa_Particle’s haste to post a “banter picture” on the J-36, we may have entertained, for over 24 hours, what’s likely to be a fake photo, which has even then been picked up and reported by TWZ (like every other piece of news we break on his forum).

I know these are heady days — yesterday I was even going to tease back at Alfa telling him to go worry about his northern girl’s extra large xtra long schnozz (nose) and designers whose style seems inspired by certain lands “far far north of Heilongjiang” — but perhaps we need to tone things down a little and temper our enthusiasm?

Real or fake, in hindsight no one immediately questioned the authenticity (like we normally do). Let’s not get complacent.
This incidents confirms once again that the authors of TWZ frequent here a lot.

Maybe he might not be the only one. This place always have a 99% guest ratios to actual members.
 

siegecrossbow

General
Staff member
Super Moderator
Many of the pictures here also get posted onto twitter quite quickly, and some of the TWZ writers do follow users there

Chinese aviation photographers really hate how Western defense journos appropriate their photos (they hate it even when Deino does it). I think they will put more watermarks on them to prevent “unauthorized use”.
 

ENTED64

Junior Member
Registered Member
How can you be so sure?
Because the first flight was 6 months ago? Are you really suggesting there is any chance at all that all of the systems are complete in 6 months?

Yes, but what makes it even stranger: why does someone take a video of Xi'an and make a fake with a CG J-36?
Who knows, I think we can just chalk this one up to some random guy messing around with photoshop.
 
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