The Mikoyan-Gurevich MiG-7 was designed to intercept high flying German reconnaissance planes at altitudes of around 40,000 feet.
The Klimov engine had a multistage supercharger.
The MiG-7's pilot flew in a pressurized cockpit.
The MiG-7 was made from all metal components.
The MiG-7's wing was rather long to help it at the high altitudes it was intended to perform at.