R-73 (missile)

The R-73 was developed to replace the earlier R-60 (AA-8 'Aphid') weapon for short-range use by Soviet fighter aircraft. Work began in 1973 initially as the K-73, operational in 1982 and the first missiles formally entered service in 1984. It can be targeted by a helmet-mounted sight (HMS) allowing pilots to designate targets by looking at them. Minimum engagement range is about 300 meters, with maximum aerodynamic range of nearly at altitude. The weapon is used by the MiG-29, MiG-31, Su-27/33, Su-34 and Su-35, and can be carried by newer versions of the MiG-21, MiG-23, Sukhoi Su-24, and Su-25 aircraft. Shortly after German reunification in 1990, Germany and other ex-Warsaw Pact countries found themselves with large stockpiles of the R-73 missiles or AA-11 Archers as designated by NATO, and had concluded that the R-73/AA-11's capabilities had been noticeably underestimated by the West. In particular, the R-73 was found to be both far more maneuverable, and far more capable in terms of seeker acquisition and tracking than the latest AIM-9 Sidewinder. This realization started the development of newer missiles to help compete, including the ASRAAM, IRIS-T and AIM-9X. According to an interview in 2022 with a Ukrainian pilot, the R-73 does not track well in clouds. This makes the missile difficult to use against Shahed-136 drones, forcing pilots to rely on their 30 mm cannon. Further developments include the R-74 (izdeliye 740) and its export variant RVV-MD. These are expected to supplement previous variants of the R-73 in service. An improved version of the R-74, the R-74M (izdeliye 750) features fully digital and re-programmable systems, and is intended for use on the MiG-35, MiG-29K/M/M2, Su-27SM, Su-30MK and Su-35S. A further upgrade, known as the R-74M2 (izdeliye 760), is intended for the fifth-generation Su-57 aircraft. This missile has an inertial navigation system, a smaller cross-section with the fin span reduced to to fit in internal weapon bays, has IRCCM (infrared counter-countermeasures), and is designed to match the performance of the AIM-9X, IRIS-T and the ASRAAM. The R-74M2 completed trials in 2019, and its export variant RVV-MD2 was unveiled in 2023. A clean sheet design, the K-MD (izdeliye 300), is expected to supersede the R-74M2 in the future. ==Operational history==

On 24 February 1996, two Cessna 337s of the Brothers to the Rescue were shot down while flying over international waters 10 nautical miles outside of Cuban airspace by a Cuban Air Force MiG-29UB. Each of the aircraft was downed by an R-73 missile. During the Eritrean-Ethiopian War from May 1998 to June 2000, R-73 missiles were used in combat by both Ethiopian Su-27s and Eritrean MiG-29s. It was the IR-homing R-60 and the R-73 that were used in all but two of the kills. On 18 March 2008, a MiG-29 Fulcrum of the Russian Air Force intercepted a Georgian Elbit Hermes 450 UAV over Abkhazia. The MiG-29 destroyed the UAV with an R-73 missile. On 27 February 2019, Indian officials claims that an IAF MiG-21 Bison had successfully engaged and shot down a Pakistani F-16 with an R-73E missile during the 2019 Jammu and Kashmir airstrikes. Pakistan denied the loss of its aircraft. On 7 May 2022, Ukrainian Colonel Ihor Bedzai was killed when his Mi-14 helicopter was shot down by a Russian Su-35. It is reported that after missing its first shots using its 30 mm cannon, the Su-35 resorted to launching an R-73, which destroyed the helicopter. Use as a surface-to-air missile Serbia According to an unconfirmed report, Serbia developed and used a ground-launched version of the R-73 in 1999. Two missiles were fitted on a modified M53/59 Praga chassis with the twin 30 mm cannons replaced by two launch rails. Yemen The Houthi movement's Missile Research and Development Centre and the Missile Force have tried to fire R-27/R-60/R-73/R-77, from Yemeni Air Force stocks, against Saudi aircraft. The issue for the R-27R and R-77 is the lack of a radar to support their guidance to the target. However the R-27T, R-73 and R-60 are infrared heat seeking missiles. They only require power, liquid nitrogen "to cool the seeker head", and a pylon to launch the missile. These missiles have been paired with "US made FLIR Systems ULTRA 8500 turrets". However the drawback is that these missiles are intended to be fired from one jet fighter against another. So the motors and fuel load are smaller than a purpose-built surface to air missile. Only one near miss has been verified and that was a R-27T fired at Royal Saudi Air Force F-15SA. According to the War Zone the Houthi designation for modified R-73s is Thaqib-1. Ground-based improvised infrared sensors systems and radars are believed to be used to help the missiles acquire and track their targets. In December of the same year, Ukraine released footage of a Magura V5 naval drone firing an R-73 missile and hitting a Russian Mi-8 helicopter. According to the Main Directorate of Intelligence (HUR), the Mi-8 was shot down, while a second helicopter was damaged but managed to return to base. ==Variants==

• R-73 − Standard model with ±40° off-boresight. • R-73E − Export version of the standard model with ±45° off-boresight. The missile has a maximum range of with 8 kg warhead. • 'R-74M (izdeliye 750)' − Improved model with ±75° off-boresight. • 'R-74M2 (izdeliye 760)' − Further improved variant with reduced cross-section for the Sukhoi Su-57. The missile has an inertial navigation system and fin span reduced to . Implements IRCCM. • RVV-MD2 − Export model of the R-74M2. • Thaqib-1 − Houthi modification into a surface-to-air missile. • Sea Dragon − Ukrainian modification for use in unmanned surface vehicles. ==Operators==

Current • • • • • • • • • • • • • − Used on Su-25KM Scorpion • − Used by the Naval Air Arm and Air Force • • • • • • • • • • − Used by Naval Aviation and Aerospace Forces • • • • • • • • Non-state actors • • • • • • • • • • • − Passed to successor states. • • • − Passed on to successor states Evaluation-only • − 100 missiles purchased in 1997 ==Notes==