Russia's MiG-25s Flew So Fast They Destroyed Their Own Engines

December 27, 2017 Topic: Security Blog Brand: The Buzz Tags: RussiaMilitaryTechnologyWorldU.S.NATOMiG-25

Russia's MiG-25s Flew So Fast They Destroyed Their Own Engines

Designed to shoot down a bomber that never existed.

In contrast with its older cousin, the MiG-21, a very limited number of Foxbats remain in service. Most of these fly in the  Algerian Air Force  and the Syrian Arab Air Force, although some reports have emerged of a MiG-25 returning to service in Libya. Most Foxbats retired shortly after the end of the Soviet Union, with a few serving for a time in successor state air forces. Iraqi MiG-25s were largely destroyed in the Gulf War, with the survivors eliminated in Operation Desert Storm.

In the late 1960s, the USSR debuted what appeared to be the world’s deadliest fighter. The MiG-25 (NATO term “Foxbat”) could outrun any fighter in the air, and indeed any military aircraft other than the  SR-71 Blackbird .

Bearing a wicked name, a forbidding profile, and some great stats, the Foxbat looked like a world-beater. Combining exceedingly high speed with high altitude tolerance and a heavy weapons load, it looked as if the plane could contribute effectively on the Central Front while also helping to immunize Soviet airspace from U.S. penetration. Combined with the lessons of  third-generation fighters  in Vietnam, the existence of the Foxbat helped spur U.S. innovation, pushing the development of the  F-15 Eagle .

Recommended: North Korea Has 200,000 Soldiers in Its Special Forces

Recommended: Why Doesn't America Kill Kim Jong Un?


Recommended: 1.2 Million Casualties: If North Korea Attacked Los Angeles with a Nuclear Weapon

But the Foxbat never lived up to its billing. Deficiencies in design, manufacturing problems, and the disappearance of key aspects of its mission meant that it could not seriously compete on quality with the best fighters of the age, or on costs with models such as the  MiG-21. Despite its stunning performance, the Foxbat has now nearly disappeared from the inventories of the world’s air forces.

Foxbat Inception

The Foxbat sought to answer the Soviet Union’s need to protect its airspace from fast, high-flying U.S. bombers. The most prominent example was the  B-58 Hustler , a Mach-2-capable nuclear bomber that entered service in 1960, but on the horizon loomed the  B-70 Valkyrie , a  futuristic bomber capable of penetrating Soviet airspace at speeds in excess of Mach 3. Armed with long-range missiles, a large radar and powerful engines, the Soviets designed the Foxbat to catch and kill these fast bombers.

The Foxbat entered service in 1970 (the same year the Hustler left service, and eight years after the cancellation of the B-70), with the last aircraft rolling off the production line in 1984. In all, the Soviet Union produced 1,186 Foxbats for foreign and domestic needs, with the overwhelming majority serving in the USSR. The USSR never licensed the Foxbat for foreign production, and the Chinese never cared enough about the aircraft to make a concerted effort to copy it.

Of course, the threat posed by Soviet SAM systems would eventually drive U.S. bombers from high altitude to low altitude, reinvigorating the B-52 Stratofortress and transforming the air defense game. Lacking a look down/shoot down radar (the Soviets wouldn’t develop this capability until the 1980s), the MiG-25 would have struggled to carry out its interception role against such tactics. In reality, most of the Foxbat’s Soviet service would come in pursuit of high-flying recon planes, such as the SR-71.


The MiG-25s capabilities were, and are, eye-popping. It can make Mach 2.83 in sustained flight, and can go over Mach 3 in bursts if no one cares about the destruction of the engines. In interceptor and air-superiority mode, it carries four  R-40 air-to-air missiles, with an outer range limit of fifty miles. It can reach an altitude of over sixty-five thousand feet. Foxbats designed for reconnaissance missions carried sophisticated electronic and photographic equipment, and could reach even higher ceilings. A few Foxbats were optimized for high-speed strike roles.

These capabilities terrified Western analysts, who lacked good information on how the Foxbat flew in combat situations. The appearance of the MiG-25 (and its ability to set a variety of speed and altitude records) helped drive decisions in the U.S. tactical fighter program, eventually leading to the F-15 Eagle. After a defector  landed a new MiG-25 in Japan in 1976 , U.S. engineers developed a better sense of the plane’s characteristics.

What they found was that the Foxbat had troubles. Limitations in Soviet manufacturing techniques made the plane heavier than its Western counterparts. It maneuvered poorly at high speeds, and handled poorly at low altitudes. Its radar was of limited effectiveness in conventional combat situations against enemy fighters, and the handling problems at low altitudes meant that the plane never performed particularly well in that mission. These deficiencies would have been forgivable if the Foxbat had ever conducted its high-altitude interceptor role, but in fact it saw most of its service in far different circumstances.


In combat the Foxbat had limited success. In 1971, a Soviet Foxbat  operating out of Egypt  turned on its afterburners and managed to escape several Israeli fighters by flying in excess of Mach 3, although the experience  permanently burned out the plane’s engines . In the war over Lebanon, Israeli fighters  downed several Syrian Foxbats in a series of engagements. During the Syrian Civil War, the desperate Syrian Arab Air Force has pushed aging Foxbats into ground support roles,  in one case using air-to-air missiles  to attack ground targets.