Missile R-77 (AA-12 Adder)

The R-77 (NATO reporting name AA-12 Adder) is a Russian active radar homing beyond-visual-range air-to-air missile, known in export form as the RVV-AE. It is the Russian counterpart to the American AIM-120 AMRAAM. Work began in 1982 in the Ukrainian SSR and was not completed before the dissolution of the Soviet Union. After 1991, production took place in Kyiv. The missile was first displayed at the 1992 Moscow Airshow, where Western journalists nicknamed it "Amraamski." Development of the baseline model was complete by around 1994. Funding shortages through the 1990s and early 2000s stalled further work, and the basic R-77 did not enter Russian service in quantity. For years only the export RVV-AE was produced. The Ukrainian arms embargo imposed during the Russo-Ukrainian War cut supply chains and further disrupted production. The Russian Aerospace Forces accepted the R-77-1 (AA-12B) in 2015 and the R-77M (AA-12C) in 2025.

At short distances the missile launches in fire-and-forget mode. At longer distances an inertial autopilot guides it, with encoded datalink updates from the launch aircraft's radar on changes in the target's position or acceleration. It switches to its active radar seeker for the terminal phase. The host radar retains computed target data in case the missile loses lock. The seeker is a multi-function doppler-monopulse active radar. Early models combine vestigial cruciform wings with grid fin tail control surfaces. Flow separation at high angles of attack gives the missile a turn rate of up to 150° per second, but the grid fins increase drag and radar cross section. Maximum speed is Mach 4. The warhead is a high-explosive expanding rod type with a laser proximity fuze. Intended targets range from hovering helicopters to high-speed, low-altitude aircraft, cruise missiles and precision-guided munitions. Russian sources state it can also engage air-to-air missiles and surface-to-air missiles such as the Patriot.

The R-77-1 (export RVV-SD, first shown in August 2009) has a streamlined nose, a 9B-1248 active radar seeker, new fins and a boat-tail rear section to reduce drag. The R-77M (izdeliye 180, export RVV-SDM) has a 9B-1103M2 AESA seeker, conventional fins in place of grid fins and a dual-pulse motor. It is intended as the primary medium-range missile of the Su-57, which was filmed carrying it in October 2020. Unrealized projects include:

• the infrared-homing R-77T, suited to the Russian practice of firing pairs of missiles with different seekers
• the passive radiation homing R-77P
• ramjet-powered R-77-PD models
• ship-launched and surface-to-air variants

An earlier ramjet program tied to the MiG 1.44 likely ended by 1999.

Launch platforms include the MiG-21UPG, MiG-29, MiG-31BM, Su-27, Su-30, Su-34, Su-35, Su-57 and the Chinese J-11. In February 2016 Russia deployed Su-35S fighters to Syria, where they flew combat air patrols armed with R-77-1s. Since the 2022 invasion of Ukraine, Su-35 and Su-30SM fighters have used R-77-1s against Ukrainian aircraft, outranging Ukrainian missiles. In July 2025, missile wreckage and photographs of Su-35S fighters carrying R-77M missiles alongside R-74Ms and Khibiny-M electronic countermeasures pods indicated the R-77M's operational debut in Ukraine. Russia reportedly signed procurement contracts in 2015 and 2020.

The RVV-AE has been exported widely. India was the first export customer, with the final RVV-AE batch delivered in 2002. It later ordered further missiles, including RVV-SD batches in May 2025, for the Su-30MKI, MiG-29UPG and naval MiG-29K. China operates the missile with the Air Force and Naval Air Force. Other operators include:

• Algeria
• Egypt
• Eritrea
• Indonesia
• Kazakhstan
• Malaysia
• Serbia (R-77-1 for its modernized MiG-29s)
• Sudan
• Syria
• Uganda
• Venezuela
• Vietnam
• Yemen

Peru briefly operated it on MiG-29s.