Looks like something out of a Hollywood movie.................
I designed something similar to this when I was eight years old.
Here is a test aircraft that carried a reactor (not to power the plane, but to test the reactor while airborne) I had a boss who worked in radiation safety (health physics) for the project. He was involved in material tests that were carried out in Georgia. It was interesting talking to Bob Boyd about how the radiation would kill the tops of trees that were higher than the shield mounds around the radiation source they used to test aircraft parts. Here is a link about the US nuclear airplane project. Nuclear aircraft