Sukhoi T-75 LTS (CheckMate)

[Hydroman]

When's Russia going to build this thing?

 

[Geo]

When's Russia going to build this thing?

This year.

 

[Scott Kenny]

Not to nitpick, but the patent is about low observable air intake

Right, but prior art is the DSI bump on a flat surface.

I'm not sure "a DSI bump on a curved surface" is sufficiently novel to be patentable. Because it is a VERY obvious next step from the flat surface DSI.

 

[Scott Kenny]

Right, but prior art is the DSI bump on a flat surface.

I'm not sure "a DSI bump on a curved surface" is sufficiently novel to be patentable. Because it is a VERY obvious next step from the flat surface DSI.

Also, now that I think about it, IIRC the F-16 DSI was on a slightly curved surface as well...