Originally Posted by Modern Elmo
I expect that part of of the USS America's aviation deck will be water cooled in a similar manner, so as to cope with V-22 and STOVL F-35 hot exhaust. The USS America will probably also have tilt-up blast deflectors like the one in the photo at the link posted above.
I haven't read anything about installing JBDs on the LHA(R) class... as per the illo you posted earlier, the plan is for rolling take-offs using nearly the whole length of the flight deck, thus there would be no aircraft spotted behind the departing F-35B, thus no need to deflect the exhaust away from it.
The other purpose of the JBD is for protecting the flight deck from heating during pre-launch run-up... but as the F-35B's hot exhaust is directed aft, not partially downward (as with the F-4 Phantom), this is also not needed.
As for landing, the primary problem with the hot exhaust and the deck was with true vertical landings. The USMC has continued the RVL* research & development the RN started, not only to increase bring-back weight but to also reduce deck heating by eliminating the "one area gets sustained hot exhaust" associated with true vertical landings.
Therefore, there would be less need for any special cooled deck sections... improved heat/blast resistant deck coatings will likely be sufficient.
*rolling vertical landing