Mikoyan-Gurevich Mig-3
The Mig-3 was a very fast plane at the high altitudes it was designed to fly. Sadly, most air combat in Russia occurred at low altitude, where the plane flew like a dog (well, a dog with wings, I guess). It was hoped to re-engine the plane to improve its low altitude performance, but there were no engines to be had, so it fell into obscurity. No one heard much of anything else out of the Mig bureau again until the fifties, when they were looking for engines again. The British were nice enough to sell them some of theirs, which they promptly used to build the best jet fighter of the early cold war, the Mig-15.



