Gunther said
The advantage of nuclear power is, cheap energy that lasts for extended period of times. It is not necessarily designed for speed or any other benefit. Aircraft rely on speed and low weight in order to perform effectively. Placing a nuclear reactor in an aircraft undermines its potential. Sure the thing can fly for 30 days without stopping to refuel, but who wants that? Who needs that? The components that make up a nuclear reactor small enough to fit into an airframe would be very heavy. I wonder if it could get up off the ground? Sure, this is fantasy, science fiction, but a line should be drawn somewhere. Reading that only makes me groan.
Like others said, it has been done in the 50s, since then it is certain that reactors were made more compact, size of planes larger, engines more powerful and shielding more efficient, still. The point in my case would to have made a long term observation craft for situations such as a test missile launch in a country but the exact location not being known. In the airplane you thus have a substential crew relaying each other on stand-by either for the launch or for more information as to relocate, which would be done faster still than with a ship. In game, this would be a constantly airborn AWAC with a team which finds its competance in analyzing any kind of new generation weapon system the fleet encounters.
I think it would have its reason to be there because like the OP said, this is a fleet of wtf experimental crafts or slightly insane captain that couldn't find its place in the 'real' navy. Obviously there wouldn't be much, maybe it would be the only model of this plane, the fruit of some research division with people going: Why are we financing these guys? But, still finding themselves with this plane after saying 'Hell no' to if there would be more than this prototype made to show the concept, while perhaps flawed or redundent, worked. Thus the navy groans and sent it with its other weird toys.
Or, if no one wants any of this, I'll drop it. Still, a shame. I like to place one or two doomsday atomic punk devices in a RP or another.