The Russian Armed Forces are working on the Mig-41, a new supersonic fighter based on the Mig-31 Foxhound.

According to the famous experimental pilot Anatoliy Kvochur, the MiG-41 is to be capable of reaching speeds above Mach 4, even Mach 4,3. That would make the plane faster than the (now retired) American SR-71 Blackbird. Currently, the Foxhound is capable of flying at speeds of Mach 2.8.

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The Russian Armed Forces are working on the Mig-41, a new supersonic fighter based on the Mig-31 Foxhound.Related articles

Nevertheless, while developing a Mach 4+ replacement for the Foxhound, the Russians will to continue the modernization program of the Foxhounds, overhauling over 100 aircraft.

MiG-31 is an interceptor based on MiG-25 Foxbat, with a combat radius of 720 km. A group of four Foxhounds is able to control an area that is 1000km wide; 190 MiG-31s are currently in service within the Russian Air Force, 100 of those are still flyable.