J-20 5th Gen Fighter Thread IV (Closed to posting)

[paintgun]

Hmmm ... Can anyone explain these shapes and structures ???? I need to admit I've never seen such things on a Western fighter.

Deino

I'm also perplexed, might have to call PS on this as well
edit : but looking at the lower res picture, it has the same features as well

 

[latenlazy]

Actually I take back what I said about the mesh holes being different sizes. It's possible that one looks like it has smaller holes because it's at an angle.

 

[paintgun]

have we seen those meshes with 2001/2002?

 

[latenlazy]

have we seen those meshes with 2001/2002?

Definitely not.

 

[Totoro]

while they could be bleed holes, aren't they a bit too close to intake lip for that? i thought intake bleeds were usually positioned closer to engine faces, farther down the intake ?

Could these be more like additional intake holes for take off and other very low speed ops?

Mesh should be there because of RCS. And i tried to find logic in two meshes being different size but i think its more likely they're indeed the same size, but angle difference makes it look as they're not.

 

[latenlazy]

I counted the number of lines. The two meshes should be identical, so it's probably an effect of angle. Still no clue what it does though.

 

[Air Force Brat]

Hmmm ... Can anyone explain these shapes and structures ???? I need to admit I've never seen such things on a Western fighter.

Deino

Bose 131 Marine Speakers, so the guys can listen to some "tunes" while they're spinning wrenches, alternatively for ground fire suppression pilot can pop in the Biebs to permanently damage enemy troops cognitive abilitiesl, such as aiming and reloading their weapons?????

 

[siegecrossbow]

pilot can pop in the Biebs to permanently damage enemy troops cognitive abilitiesl, such as aiming and reloading their weapons?????

Isn't that considered a weapon of mass destruction? Thought it got banned back in 2010.

 

[gullible]

 

[chuck731]

Not one bit...unless they're specifically used for controlling boundary layer ingestion and managing total pressure recovery, which is really no guarantee. Honestly, I have no idea what those bleeds/vents or whatever are for, but I suspected that that's what they were when they seemed to be barely visible in some pictures but really visible in others, which could have been explained by some kind of mesh structure, which is what we ended up getting. Interestingly enough the two hexagon meshes don't have the same sized holes, which implies there's a design intention there for something. This could be indicative of some kind of function related to the aerodynamics of the inlets, but whatever that does should be obvious to someone with more expertise, whatever that is.

If the mess work is metal it would opaque to radar wave lengths greater than spacing between mesh wires. The wave lengths a mesh will keep out depends on spacing between mesh wires, not the size of the wires themselves. So the mesh would also be transparent to EM wave with wave length much less than the mesh wire spacing.

So the mesh is not necessarily for passage of air or gas. If the wire in the mesh is fine, it could be used as a radar proof screen for a very short wave emitter, or as an aperture for an optical, IR, or UV sensor.