Might be some design changes to funnel on batch 2 ships.Why do you think that the ship has this problem? design flaws? impossibility of designing any other way? could they have problems with this "solution" ?
Its better for them that carrier 003 doesnt have this problem.
The soot doesn't fall on radar. Instead it falls on sensitive ESM equipment. I could go into a TLDR post why these particular items --- Type 726-1 and 726-2 ESM --- is essential for the workings of 726-3 ECM and the 726-4 Decoy system, and these components are essential for the ship's own survival.Why? Since radar has existed on ships, it has been exposed to smoke gases. That won't be a problem, a radar antenna can withstand that.
Just paint it black and it's good.