Mikoyan MiG-31 Foxhound

Last updated: February 18, 2026

✈️ Aircraft Specifications

DesignationMiG-31BM
ManufacturerMikoyan
Country of OriginRussia/Soviet Union
First Flight1975
Length22.69 m (74.4 ft)
Max Speed (Mach)2.83
Max Speed (km/h)3,000 km/h
Service Ceiling20,600 m (67,589 ft)
Range1,450 km (900 mi)
Engine2× Aviadvigatel D-30F6 turbofans
Crew2
StatusActive
MiG-31 Foxhound supersonic interceptor

Overview

The MiG-31 Foxhound is the world’s fastest combat aircraft currently in active service, capable of sustained Mach 2.83 flight. Developed as a replacement for the MiG-25, it features a vastly improved Zaslon phased array radar—the first PESA radar fitted to any fighter in the world.

Design & Development

While externally similar to the MiG-25, the MiG-31 is largely a new aircraft with D-30F6 turbofan engines (vs turbojets), a two-seat crew, and the groundbreaking Zaslon radar capable of tracking 10 targets and engaging 4 simultaneously at ranges up to 200 km. Four MiG-31s can control an 800 km-wide front.

Operational History

The MiG-31 has been modernized multiple times, with the latest MiG-31BM/BSM variants receiving new avionics and weapons. It serves as the launch platform for the Kinzhal hypersonic missile. Russia maintains approximately 130 MiG-31s in service and plans to operate them until at least 2030.

Armament

  • 1× GSh-6-23M 23mm cannon (260 rounds)
  • 4× R-33 (AA-9 Amos) long-range missiles (120 km)
  • 2× R-60 short-range missiles
  • R-37M ultra-long-range (300 km!)
  • Kinzhal hypersonic missile (Mach 10, 2000 km range)

The MiG-31 is the launch platform for Russia’s Kinzhal hypersonic weapon.

Video

Frequently Asked Questions

How fast is the MiG-31 Foxhound?

The MiG-31 has a top speed of Mach 2.83 (1,865 mph). It is the fastest combat aircraft currently in operational service.

What is the MiG-31’s Zaslon radar?

The Zaslon was the world’s first fighter-mounted phased array radar. It tracks 10 targets and engages 4 simultaneously at up to 200 km range.

How many MiG-31s were built?

Over 500 MiG-31s were built.

Is the MiG-31 still in service?

Yes. Upgraded MiG-31BM variants are in active Russian service and carry Kinzhal hypersonic missiles.

References & Sources

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Sean

Aviation enthusiast and curator of the Supersonic Aircraft Encyclopedia. Sean has been passionate about different kinds of flight since he was little and maintains detailed specs and history for every aircraft featured on this site.

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