Why the MiG-31 fighter jet is so favored by the Russian military?

Why the MiG-31 fighter jet is so favored by the Russian military?

Russia is likely to keep its existing MiG-31 interceptors in service until 2060. From a time perspective, calculated from now on, the MiG-31 Fighter Jet will still need to be in service for about 37 years. If including previous service time.

The MiG-31 interceptor can be called a very long-lived active fighter. So what is Russia looking at and insisting on continuing to serve this interceptor? Why is this machine so popular with the Russian military? Let’s find out.

The Russian military has a wide range of combat aircraft, including modern multi-role fighters and older, battle-proven designs from the Soviet era. One of the most important of these aircraft is the MiG-31 Fighter Jet, which is particularly valuable for air defense and long-range interception. Despite its age, this supersonic interceptor remains a formidable force thanks to its impressive capabilities and the Russian military’s commitment to modernizing and extending its service life.

MiG-31: Origins and Design

Why the MiG-31 fighter jet is so favored by the Russian military?

The MiG-31 foxbound traces its roots back to the height of the Cold War when the Soviet Union sought to develop a dedicated interceptor capable of countering the threat posed by high-altitude, high-speed strategic bombers and cruise missiles. Designed by the Mikoyan Design Bureau, the MiG-31 Fighter Jet took its first flight in 1975 and entered service with the Soviet Air Force in 1981.

The MiG-31 Fighter Jet is a fast and high-flying combat aircraft powered by two Soloviev D-30F6 turbofan engines. Each engine generates more than 30,000 pounds of thrust, enabling the aircraft to reach a top speed of Mach 2.83 (about 3,000 km/h or 1,860 mph). With a service ceiling of 20,000 meters (or 65,000 feet), it is one of the quickest and highest-flying combat planes in the world.

MiG-31 Fighter Jet: Range and Endurance

Why the MiG-31 fighter jet is so favored by the Russian military?

Its exceptional range and endurance are another key feature that sets the MiG-31 Fighter Jet apart. With an internal fuel capacity of over 20,000 liters (5,280 gallons), the aircraft can patrol vast areas without needing mid-air refueling, covering a distance of up to 3,000 kilometers (1,860 miles). Given the country’s vast territory and the need to maintain air defense across its borders, this long-range capability is particularly valuable for the Russian military.

MiG-31 fighter jet’ Radar and Weapons Systems

Why the MiG-31 fighter jet is so favored by the Russian military?

Its advanced avionics and weapons systems complement the MiG-31’s impressive performance. At the heart of its interceptor capabilities is the Zaslon (“Barrier”) pulse-Doppler radar system, which can detect and track targets at ranges up to 320 kilometers (200 miles). This powerful radar system also features a look-down/shoot-down capability, allowing it to detect and engage low-flying targets, a critical advantage in modern warfare.

The MiG-31 is armed with a formidable arsenal of air-to-air missiles to engage these targets. Its primary armament consists of the long-range R-33 (NATO codename: AA-9 Amos) and the even longer-range R-37 (NATO codename: AA-13 Arrow) missiles. These missiles, combined with the aircraft’s high speed and altitude capabilities, enable the MiG-31 to engage targets at extended ranges, increasing its effectiveness as an interceptor.

Modernization and Upgrades

Why the MiG-31 fighter jet is so favored by the Russian military?

While the MiG-31 is an aging design, the Russian military has undertaken significant efforts to modernize and upgrade the aircraft, ensuring its continued relevance and effectiveness. One of the most notable upgrades is integrating the MiG-31BM variant, which features improved avionics, a more powerful radar system, and the ability to carry a wider range of air-to-air and air-to-ground munitions.

The Russian military has also explored the possibility of equipping the MiG-31 with advanced hypersonic missiles, such as the Kh-47M2 Kinzhal (NATO reporting name: Killjoy). This air-launched ballistic missile, capable of reaching speeds of up to Mach 10 (12,000 km/h or 7,460 mph), would significantly enhance the MiG-31’s strike capabilities and its ability to engage time-sensitive targets.

Enduring Significance

Despite its age, the MiG-31 remains a critical component of Russia’s air defense network, particularly in the country’s northern and eastern regions. Its unique combination of speed, altitude, range, and interceptor capabilities make it an invaluable asset for patrolling vast swaths of Russian airspace and responding to potential threats.

In recent years, the MiG-31 Fighter Jet has been deployed to various strategic locations, including the Arctic region and the Kaliningrad exclave, underscoring its importance in maintaining Russia’s defensive posture.

Furthermore, the aircraft has participated in numerous military exercises and operations, demonstrating its continued readiness and the Russian military’s commitment to its operational capabilities.

While the future of the MiG-31 Fighter Jet remains uncertain, with discussions of potential replacements or further upgrades, its impact on Russia’s air defense cannot be understated. The Foxhound has proven its worth time and again, and its enduring presence in the Russian military’s inventory serves as a testament to its formidable design and the ingenuity of its creators.

The MiG-31 Fighter Jet plays a significant role in Russia’s defense strategy against aerial threats and modern warfare. It has a long legacy as one of the most capable and iconic interceptors in aviation history. The Russian military relies on it heavily, and it will likely continue to be important for many years to come.


In conclusion, the MiG-31 Fighter Jet stands as a testament to enduring military prowess and technological innovation. Originating from the heights of the Cold War, this supersonic interceptor remains a cornerstone of Russia’s air defense strategy, thanks to its exceptional speed, altitude, and range capabilities.

The MiG-31 Fighter Jet is a crucial part of Russia’s defense system. Its advanced technology and weapons protect against evolving threats. The jet’s significance is due to its innovative design and the dedication of its maintenance team. Although discussions continue about its future, one thing remains clear: the MiG-31 is a symbol of Russia’s commitment to air superiority and protecting its vast territories.