The Convair NB-36H was an experimental aircraft that carried a nuclear reactor.
(files.catbox.moe)https://files.catbox.moe/36cm3q.jpgIt was nicknamed 'The Crusader" It was created for the Aircraft Nuclear Propulsion program, to show the feasibility of a nuclear-powered bomber.
USAF pursued two different systems for nuclear-powered jet engines, the Direct Air Cycle concept, which was developed by General Electric, and Indirect Air Cycle, which was assigned to Pratt & Whitney. The program was intended to develop and test the Convair X-6, a planned prototype for a fully functional nuclear-powered airplane.
The original crew and avionics cabin was replaced by a massive lead- and rubber-lined 11 ton crew section for a pilot, copilot, flight engineer and two nuclear engineers. Even the small windows were 12" thick lead glass. The aircraft was fitted with a 1-megawatt air-cooled reactor, with a weight of 35,000 pounds. This was hung on a hook in the middle bomb bay to allow for easy loading and unloading, so that the radioactive source could be kept safely underground between the test flights