Junkers Ju 287

The Junkers Ju 287 was an aerodynamic testbed built in Nazi Germany to develop the technology required for a multi-engine jet bomber. It was powered by four Junkers Jumo 004 engines, featured an unusual and novel forward-swept wing, and apart from the wing was assembled largely from components scavenged from other aircraft. It was one of the very few jet propelled aircraft ever built with fixed landing gear.