Sosna: The New Russian Air Defence Missile System

Sosna, the new Russian anti-aircraft missile system has completed the field trials and is expected to be operationalised soon.

Successor of the Strela -10M, Sosna is mounted on a light armoured tractor MT-LB and each mount carries 12 ready to fire missiles, capable of engaging aerial targets up to a range of 10 km to an altitude of 5km. its advanced high-precision ECM-protected electro-optical control system (EOCS) makes it capable of engagement both by  day and night with high survivability and enhanced jamming immunity. Its high-sensitivity thermal image channel is not influenced by the fog and smoke. EOCS is also capable of an independent automatic sector search by zone scanning, and can track up to 50 targets simultaneously. 

The high degree of protection is ensured by virtual absence of radio-frequency emission by the EOCS. The radio channel is used in the initial stage of missile guidance in boost phase, for approximately two seconds only; for the subsequent guidance a laser beam is used. The data transceiving equipment of a combat vehicle is used mainly for data receiving. Adding to the system protection are the use of special coatings and constructive features to reduce thermal signatures of the combat vehicle.

The beam rider missile is a two-stage missile designed with a  a combined impact/proximity laser fuse. Its two warheads with a combined payload of 7 kg are made up of a  fragmented-rod warhead designed for proximity detonation and  the armour-piercing/fragmentation warhead with an impact fuze.

Using the 2×6 Sosna-R missile launchers mounted on a turret which can turn on 360°, the Sosna can be reloaded in less than 12 minutes and  can fire on the move, making it ideal for employment with mechanised columns. 

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