Originally Posted by
SMT Member
Mmm. If you would please point us to the centre tank on the below picture, your idea will be much clearer.
The proposed, and since deceased, A380F would have had a different floor, for a very good reason. The same reason, actually, you'd want if you're carrying umpteen tons of a fairly dense liquid. So whilst the idea of having a Whale blasting around 200ft above a southern Californian wildfire sounds cool, the actual implementation of the idea may be a bit of challenge, barring the discovery of vibranium that is.
If you give the OP some latitude (I always do), we can assume a translation can call MID (middle) as centre tanks - but what is clear is they referred to using "existing fuel tanks" as fire fighting tanks.
In fact the OP's 3-4 hr Fuel load comment would fit pretty well with the "outer tanks" only and the trim tank part of that total fuel system.
I think all agree the challenge would be too great on a cost effective basis - a moral one has different principals to follow.