Chengdu next gen combat aircraft (?J-36)

[Blitzo]

In fact, I'd say 2D TVC nozzles instead of burried exhaust is far more conservative with this prototype. Baffling choice

Well i said the caret intakes were conservative relative to the DSIs.
I never made any mention of the exhausts as conservative or not.

As for the optimal nozzle configuration, I think it depends on their requirements.

If they are going for 2D TVC for all three engines it would indicate seeking a bit more maneuverability than we previously thought. Also, the placement of the nozzles relative to the side/rear fuselage is also fairly well "buried" longitudinally which has some IR benefits.

 

[Syrida2887]

Well i said the caret intakes were conservative relative to the DSIs.
I never made any mention of the exhausts as conservative or not.

As for the optimal nozzle configuration, I think it depends on their requirements.

If they are going for 2D TVC for all three engines it would indicate seeking a bit more maneuverability than we previously thought. Also, the placement of the nozzles relative to the side/rear fuselage is also fairly well "buried" longitudinally which has some IR benefits.

Personally, this marks the complete determination of their thinking, that is, paying more attention to its maneuverability. Although the fuselage and aerodynamic layout are so huge, so many control surfaces and 2D TVC nozzles can still help it achieve excellent maneuverability.

 

[Tomboy]

If they are going for 2D TVC for all three engines it would indicate seeking a bit more maneuverability than we previously thought. Also, the placement of the nozzles relative to the side/rear fuselage is also fairly well "buried" longitudinally which has some IR benefits.

Wouldn't this also mess up edge alignment? I mean the rear outer wedges are literally straight.

Anyhow I hope the next prototype will have the initial burried exhausts.

 

[Mearex]

I'm with Blitzo on this one. The DSI in this particular angle looks so pleasing compared to the caret intakes.

actually I just noticed that this may not be a traditional DSI. It may be forward-sweeping, but it appears to have a diamond shape like a caret, so it's almost in between a DSI and a caret, similar to how the J-XDS's intakes also appear to be neither purely caret nor DSI

 

[Blitzo]

Wouldn't this also mess up edge alignment? I mean the rear outer wedges are literally straight.

Anyhow I hope the next prototype will have the initial burried exhausts.

The TVC nozzles are almost certainly edge aligned with the rest of the aircraft as well. Straight outer wedges being straight isn't inherently antithetical with signature reduction (check the F-22's similar lateral edges to their engines which mount the rear tails).

Ultimately everything is an engineering compromise. If these are full 2D TVC for all three engines, it means they're willing to forgo a level of signature reduction for greater maneuverability/control, which in turn comes down to requirements for the aircraft.

 

[Raison D'tere]

how the J-XDS's intakes also appear to be neither purely caret nor DSI

Then I suppose it's a new thing all together. Is there any chance the research papers nominated a name for these sorts?

 

[Blitzo]

actually I just noticed that this may not be a traditional DSI. It may be forward-sweeping, but it appears to have a diamond shape like a caret, so it's almost in between a DSI and a caret, similar to how the J-XDS's intakes also appear to be neither purely caret nor DSI
View attachment 163485

It somewhat depends on whether there's a DSI bump, I think.

This angle shows the forward sweep more distinctively, and we'll await imagery to see if intake geometry is consistent with a bump.

 

[Nx4eu]

I remember in the early days of the J-36 first flight, wasn't there someone important who said the carets were only temporary and would be converted to DSI's later on. Something that was sort of brushed aside

 

[KampfAlwin]

This new prototype still has 3 engines right? Because it looks like there are only 2 nozzles

 

[Antares545]

damn really dont like the new nozzles. hope the burried exhausts comes back for the production model. the DSI's are alot better than the previous though that im happy with.