Coastal anti-ship complex 4K51 Rubezh

The complex consists of:

• 3P51 (3P51M) self-propelled launcher
• P-15M rockets (P-21 / P-22)
• rocket launcher

Perhaps, the complex can be additionally equipped with a long-range observation radar mounted on the 40B6 tower (from S-300P SAM).

The launcher (see diagram) is installed on a wheel chassis of high cross-country ability type MAZ-543 (MAZ-543M) with the wheel arrangement of 8 x 8. A control cabin with "Harpoon" radar station, gas-turbine power supply unit, swivel platform with two launching containers of KT-161 rockets are installed on the SPU. In the containers are ready to fire missiles P-15M (P-21/P-22) - one with an ARL GSN and one with IR GSN. The SPU is autonomous and can independently carry out combat missions to search for and defeat surface targets. The equipment includes firing control devices, identification system of "own-user", means of internal and external radio telephone closed communication. The radar "Harpoon" is used for target detection and is a variant of the radar, installed on missile boats. . The antenna of the radar with the help of hydraulic elevator rises to the combat position to the height of 7.3 m, in the camping position it retracts to the front of the cockpit. The time of transition of the launcher from marching position to combat position is 5 minutes.

The KT-161 containers in camping position are turned backwards (against the movement of the LRS), in combat position they are rotated by an angle of up to 110° in any direction (from the direction backwards) and by an elevation angle of 20° The container has zero length guides with a chute for the starting RDT. Hardware cabin is used for placing electronic equipment, radar equipment and combat calculation workstations. Gas-turbine power supply unit is used to supply the complex elements with electricity.

P-15M missile (P-21/P-22 - see layout diagram) "Termit" is an improved version of P-15U missile with extended range. The missile has a folding (opening after launch) wing of small elongation, Y-shaped tail fins with rudders. The plumage is not folding. The marching engine is a two-mode LRD. Launch RDT is installed at the rear of the rocket from below. The rocket has an inertial control system operating on the marching section and two versions of the active radar (ARL GLN) and infrared (IR GLN) type "Snegir-M". The CLO operates on the final portion of the missile's flight, the homing portion. The missile can be equipped with a conventional 513 kg BC or 15 Kt nuclear power. The height of the missile's marching flight (25 - 50 - 250 m) is set before launch.

Preparation and charging of the LPS is performed in the technical position. The launchers are put forward to the firing line on the defended coast. The LSU in position extends the mast with the radar antenna, unfolds the containers in the direction of firing. The combat calculation using the radar detects the target, the coordinates of the target are transmitted to the missile, after which the missile is launched.

The missile is launched (see photo) with the help of a launch accelerator in the direction of the target, after leaving the container launches a marching LRD missile, opens the wing. The rocket gains speed and altitude with the help of the launch accelerator. After the fuel is produced, the launch RTDT is reset, the rocket with a running marching engine is reduced to the height of the marching flight. The inertial control system maintains the specified altitude, speed and flight direction.

Once the target area is reached, the CLO is activated. The CLO captures the target and points the missile at the target area. Before approaching the target, the missile performs a maneuver - a "slide" to hit the target from above. The blast unit is initiated by the fuse after the missile hits the target.

The LPU is charged using additional rails, which are fastened to the container. A missile is mounted on these guides by crane and retracted into the container.

The battery of the Rubezh complex has four launchers and four transport and recharging machines. In total, the battery contains 16 missiles.

SPU complex "Rubezh" is a fully autonomous combat vehicle, can detect surface targets and shoot at them. The missiles are equipped with two types of CNS - CNS ARL and IC CNS. This, as well as a powerful combat unit increases the probability of hitting (break through the air defense) the target with a two-missile salvo with one PU (or multi-missile with several) when using active and passive interference.

The drawback of the complex is the use of an obsolete missile, which has a relatively large size and mass, so that the LPU weighing 40 tons carries only 2 missiles. The missile has a low flight speed, which reduces the probability of a breakthrough of the air defense of the target ship. The missile is equipped with an LCD, which complicates the operation of the complex.