I doubt this new plumbing arrangement is related to liquid cooling of AESA radar as posted in the quoted post above, but I think there is a possibility we are seeing arrangements related to OBOG system as previously rumoured for Bravo and Blk-III .....
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Gentlemen comment about the possibility ....
I want to add a bit given the discussion and the subjected piping.
In my opinion, it is indeed molded but not going downward rather folded for adjustment to inside. Secondly, we may need to understand that it is not necessary for the liquid cooling pipe to go all the way towards nose where AESA antenna is located. By the look and shape of it with the possibility of liquid cooling pipe; seems like a bit molded for an adjustment per airframe and then connect the same with Heat Exchange Unit (HEU) placed behind the plate that holds AESA antenna in front of it. Assumingly, heat exchanger unit does have in & out connections to redirect cold & heat in process to maintain temperature. Those in/out connections will be located with heat exchange unit and not directly with front AESA antenna. AESA antenna heat is being exchanged with HEU itself.
So basically, it may be the HEU as a hub for temperature maintenance connected with Incoming Liquid cooling pipe & exchange piping of AESA Antenna. Rest of the chipsets creating less heat may be cooled with Air. In all, it may be a hybrid cooling solution. Or, I think I have mentioned earlier as well that it is with liquid cooling for main heat producer, air cooling for less heating equipment along with heat absorbing material plate.
Side view 1 for reference: Think this is the airframe wherein, units are placed. A seemingly pipe connection is visible rising from back of the unit most probably from the same side of airframe as above, and connected.
BACK VIEW 2: Back of the AESA plate showing heat exchange piping connection right in front of HEU.
However, what I assume by looking at the picture of airframe (your post) it seems like AESA equipment to be placed right behind the plate while the subjected pipe is bending inwards at the area which is further away from AESA equipment bay. Confused, though.
I can be wrong totally on above account of possible liquid cooling piping. Couldn't find much in regard to OBOGS fitting as such. However, there are layman like me wiling to learn & understand something as such as highlighted. The post may be treated like push to attract comments from knowledge/informed members.