Possible Project Idea

Nuclear fusion is where deuterium and tritium is smashed together to create helium, an extra neutron, and a ton of energy. The benefits to nuclear fusion is that the input and output can be completely controlled, as the reactants and products are different. Compared to nuclear fission, a neutron is smashed into 235U and creates two broken pieces and a few more neutrons. These neutrons then create a chain reaction known as nuclear meltdown. 
Nuclear fusion also uses significantly less fuel to create and less shielding than nuclear fission. 
Nuclear fusion is a great alternative to many sources of energy. But I wondered whether or not it could be applicable to a airplane. An airplane equipped with nuclear fusion could stay in the air for days or months, restricted only by fatigue and supplies. 

Img: Lockheed Martin Skunkworks