Love it! A nuclear powered B-17. Sounds very Buck Rogers.
What's the plan, fuse the nuke subs hull with the wings and nose of the B-17? Or simply stuff the nuke's guts into the B-17?
Either way would look cool especially with being able to see the reactors.
You ever read "Armageddon 2419", the story that inspired Buck Rogers? It's a classic bit of sci-fi pulp fun.