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AA-10 ALAMO R-27

The AA-10 NATO Alamo was first seen carried by the SU-27 Flanker. The AA-10 comes in four variants. The AA-10A and AA-10B are the short-burn (medium-range) infrared and semi-active radar guided variants, respectively, and are standard loads on the MIG-29 and the SU-27. The AA-10C and the AA-10D are the long-burn (long-range) infrared and semi-active guided variants, respectively, carried only on the SU-27. Based on an aerodynamic analysis of the exhaust and control surfaces, the AA-10 may be one of the world's most sophisticated air-to-air missiles.

The R-27 medium-range missile is a component of the MiG-29 armament. In its overall characteristics the R-27R is generally comparable to the the American AIM-7M Sparrow missile, which it is said to surpasse it in certain combat capabilities. The R-27 is designed according to a modular principle and is the base for a family of missiles equipped with various types of homing heads and propulsion systems. Several versions of this missile have been produced in Russia with infrared, semi-active and active radar guidance. The AA-10 Alamo-C has a range of 130 km, while other variants have a maximum range of between 70 to 170 kilometers.

The R-27 standardized medium-range guided missile became operational in 1985, intended for MiG-29 and Su-27 frontal aviation fighters. The R-27 is capable of engaging manned and unmanned targets in long-range and close maneuverable air-to-air combat. It can be employed both in individual as well as group operations of platform aircraft. It supports the intercept of targets moving from different directions against the background of the earth's and water's surface in any weather conditions.

The R-27R is equipped with a semiactive radar homing head. The R-27R is equipped with an active radar proximity fuze and impact fuze and a continuous-rod warhead. It is guided to the target by a combination method according to the proportional navigation method: inertially with radiocorrection of trajectory in the initial flight phase, and homing in the terminal phase. This provides for reliable target lock-on at long ranges from the launching aircraft. The missile can be guided along special trajectories to create favorable conditions for homing head and proximity fuze operation. It is capable of going around a plume of passive jamming, of being moved out of the main lobe of the platform's radar, and of approaching a low-flying target from above at a given angle.

The missile has a canard aerodynamic configuration with an axially symmetric cruciform arrangement of aerodynamic surfaces. Control surfaces of original (so-called "butterfly") configuration permit using the same surfaces both for missile yaw and pitch control as well as for its roll stabilization. Each of the four control surfaces has an independent hydraulic drive with a pump-accumulator system for supplying pressure fluid. Canard surfaces are mounted ahead of them. Changing their size ensures identical balance characteristics of the missile when the homing head is replaced.



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Page last modified: 02-06-2018 18:25:43 ZULU