The Supermarine Spitfire IIa, an early mark. Fast and maneuverable, I believe this is the most beautiful airplane ever! Look at those lovely elliptical wings! Stanford Tuck of the RAF flew this plane and the Hurricane in the Battle of Britain.
P 51 Mustangs of John Dilly and Dean Cutshall. No other image represents the power and endurance of Godspeed better than the remarkable Mustang fighter, arguably the greatest fighter plane ever developed.
If I'm not mistaken, they used a to carry an operational nuclear reactor as a test to see how plausible it would be to have atomic powered aircraft. The reactor wasn't used for power of course, just to see if it could be safely run airborne.