The Junkers Ju 287 was a multi-engine tactical jet bomber built in Nazi Germany in 1944. It featured a novel forward-swept wing, and the first two prototypes were among the very few jet propelled aircraft ever built with fixed landing gear.
Junkers Ju 287
Rocket engine Walter HWK 109-501 on display at the Polish Aviation Museum
A forward-swept wing or reverse-swept wing is an aircraft wing configuration in which the quarter-chord line of the wing has a forward sweep. Typically, the leading edge also sweeps forward.
Forward-swept wing of the Sukhoi Su-47
LET L-13 two-seat glider
ARV Super2
Grumman X-29 displaying forward-swept wing configuration