This plane was used to spy on people from the air, after takeoff, it would speed into the atmosphere into near space and then due to the large wing span stay up there for around 14 hours. This craft only had 2 wheels near the fuselage to reduce weight and I have replicated this within Kerbal Space Program.
A stock aircraft called Lockheed U-2 Spyplane. Built with 36 stock parts.
Built in the SPH in KSP version 1.0.5.