The Mikoyan-Gurevich MiG-9 was the first Soviet turbojet fighter developed by Mikoyan-Gurevich in the years immediately after World War II. It used reverse-engineered GermanBMW 003 engines. Categorized as a first generation jet fighter, it was moderately successful, but suffered from persistent problems with engine flameouts when firing its guns at high altitudes due to gun gas ingestion. A number of different armament configurations were tested, but nothing solved the problem. Several different engines were evaluated, but none were flown as the prototype of the MiG-15 promised superior performance.
The Gurevich 9 was the front line jet fighter of the North Japanese Air Force. Although the jets bore the red star inside the rising sun of the air force, everyone knew that they were piloted by Red Air Force pilots.