J-20 5th Gen Fighter Thread VIII

[taxiya]

The outter petals are ceramic coated. The coating does get wear and colorization from the heat, so a brand new engine's coating should be very white.



Besides, the coating should be standard among new WS-10s, see here WS-10 TVC

 

[sheogorath]

Besides, the coating should be standard among new WS-10s, see here WS-10 TVC

Any idea what the extra anchor points are for?.

 

[Atomicfrog]

Any idea what the extra anchor points are for?.

Probably a spin recovery parachute anchor, it's a TVC testbed afterall.

Look a lot like the one on afti f-16:

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nice document on these:

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[sheogorath]

Thank you!. It makes sense, hadn't thought about that possibility.

 

[siegecrossbow]

The outter petals are ceramic coated. The coating does get wear and colorization from the heat, so a brand new engine's coating should be very white.
View attachment 126812


Besides, the coating should be standard among new WS-10s, see here WS-10 TVC
View attachment 126813

Outer petals are not ceramic. They are heat resistance composite material.

 

[latenlazy]

The outter petals are ceramic coated. The coating does get wear and colorization from the heat, so a brand new engine's coating should be very white.
View attachment 126812


Besides, the coating should be standard among new WS-10s, see here WS-10 TVC
View attachment 126813

2055’s engines should be WS-15s I think.

 

[taxiya]

Outer petals are not ceramic. They are heat resistance composite material.

I know what you mean. WS-10 (except TVC) has two nozzles at the expansion section, in between is the induction channel. The inside petals of the outer nozzle is ceramic coated. The outside petals of the outer nozzle is composite.

 

[taxiya]

2055’s engines should be WS-15s I think.

In that case, there is no reason that its inside is not ceramic coated.

 

[by78]

Mostly high-resolution images (cropped from the originals for better clarity).

 

[by78]