Shenyang next gen combat aircraft thread

[siegecrossbow]

my worry is it negatively impacting stealth. Also I just see no reason for there to be one, like what's even the upside?

Maintain stability at high AOA.

 

[Alfa_Particle]

my worry is it negatively impacting stealth. Also I just see no reason for there to be one, like what's even the upside?

It's a boundary layer diversion duct for the DSIs. I suspect they can somehow make it a lifting body too(?).

 

[ying1978]

I'm afraid the groove is quite real.... My personal copium is that it doesn't have a negative impact on internal bay volume, many people just assumed the groove implies two separate bays but that is not necessarily true, it could still be a single bay with bay doors extend into the groove (which is actually a pretty shallow groove)

The back of the main fuselage starts to taper upwards where the groove starts. I’ll take this as an indication that the main weapons bay has already ended at this point.

my worry is it negatively impacting stealth. Also I just see no reason for there to be one, like what's even the upside?

The groove starts right before the wing span of the aircraft is at its widest. It probably has something to do with area ruling and drag reduction.

 

[kwaigonegin]

Wrong-they are FREEDOM WINGS!!!! As of now they are all make-believe wings as the F47 doesn't exist except for the USA becoming like lying ,delusional indians saying it flew 5 years ago hahaha-meanwhile the timing of these hopefully real J36 fightsis a big "middle finger" <to the vapourware F47(not in flight,not in tarmac,not in hangar!!-not getting photographed by the US press etc>- from the PLAAF to the USAF-"eat my dust"

Is that like a patriotic buffalo wings? To go with freedom fries? And a side of freedom slaws?

 

[talonn]

I still don't think it's the same plane. Just look at the nozzles:

View attachment 149589
vs
View attachment 149590

Suspicious indeed

 

[enroger]

The back of the main fuselage starts to taper upwards where the groove starts. I’ll take this as an indication that the main weapons bay has already ended at this point.




The groove starts right before the wing span of the aircraft is at its widest. It probably has something to do with area ruling and drag reduction.

I don't get what you're saying, I believe the groove starts at the intake lip and extend all the way to the rear? Yeah you're right that weapon bay end where fuselage starts to taper upwards, but I'm talking about the bay being present in the center line where the groove is. Just a wild guess from my part.

my worry is it negatively impacting stealth. Also I just see no reason for there to be one, like what's even the upside?

I'm not too worried about stealth TBH, I think it is just like with canards if it really is that bad then they won't use it in the first place, at worse it has some marginal impact that is out weight by aerodynamic considerations

 

[manqiangrexue]

I still don't think it's the same plane. Just look at the nozzles:

View attachment 149589
vs
View attachment 149590

Perhaps it was flown once without them installed and another time with them installed to test some differences such as engine output, handling/stability, rear signature, etc...?

 

[Mearex]

The back of the main fuselage starts to taper upwards where the groove starts. I’ll take this as an indication that the main weapons bay has already ended at this point.




The groove starts right before the wing span of the aircraft is at its widest. It probably has something to do with area ruling and drag reduction.

let me clarify. When I say groove I mean a potential dent throughout the entirety of the bottom of the fuselage:

I don't mean a dent that only starts after the IWB:

The latter is fairly normal for twin engines and I don't have a problem with it, but the former is weird af (and ugly) and never seen on any stealth fighters


my copium right now is that the pixels in the groove area after the IWB is a lot darker than the pixels in the groove area on the IWB, so hopefully theres no dent through the IWB

 

[ying1978]

let me clarify. When I say groove I mean a potential dent throughout the entirety of the bottom of the fuselage:
View attachment 149599
I don't mean a dent that only starts after the IWB:
View attachment 149600
The latter is fairly normal for twin engines and I don't have a problem with it, but the former is weird af (and ugly) and never seen on any stealth fighters


my copium right now is that the pixels in the groove area after the IWB is a lot darker than the pixels in the groove area on the IWB, so hopefully theres no dent through the IWB

For the rationale behind the shallow indent before the taper, reducing cross sectional area is still the only logical reason that I can think of. That part of the fuselage is pretty thick, SAC probably want to accommodate the deepest possible weapon bays while simultaneously chamfering off any unused space between the two main bays for drag reduction.

 

[mack8]

Looks like our northern friend is back in the limelight?

https://twitter.com/i/web/status/1909516910280294555