Antisubmarine missiles 91PE1 and 91PE2

The general principle of operation of both types of missiles provides for their launch into the area of location of the detected underwater target according to the target designation data from external sources, previously entered into the onboard control system. As a means of destruction of 91PE1 and 91PE2 missiles the high-speed anti-submarine missile APR-3ME or self-guided small-size torpedo MPT-1UME (weight-300 kg, diameter-324 mm, length-3000 mm, mass BC-60 kg) is used. APR-3ME and MPT-1UME belong to the third generation of anti-submarine weapons and provide for independent search and detection of an underwater target in silent mode, high-speed approach to it and defeat before the beginning of evasive and counter-measures maneuvers.

The 91PE1 ballistic missile (see layout chart) of the "submarine - submarine" class is launched from 533 mm torpedo tubes from a diving depth of 20 to 150 m at a submarine speed of up to 15 knots into the area where the detected submarine target is located. The range of fire at launch from a depth of 20 to 50 m is 5-50 km, and at launch from a depth of 150 m - 5-35 km. Up to four missiles can be volley launched on one target. The prelaunch preparation time is 10 seconds.

Solid fuel engine of the first stage 91PE1 provides its movement on the underwater section of the trajectory, exit from the water and the altitude gain. The RDTT is then separated and the second stage flies along a controlled trajectory into the target area. When flying in the airborne section of the trajectory, the onboard inertial control system provides stabilization and guidance of the missile to the specified aiming point.

The 91PE2 anti-submarine missile (see layout chart) is designed to arm surface ships equipped with 3C-14E or 3C-14PE unified launchers. The 91PE2 is launched at any speed of the carrier ship. The 91PE2 missile's launch engine is less powerful than that of the 91PE1 missile, it provides the missile's exit from the ship's launcher and its altitude gain. At the design point, the second stage is separated, which is driven by parachute and then searched and pointed at a submarine target (see application chart). The firing range is 40 km. The pre-start preparation time is 10 seconds.

Prelaunch preparation of 91PE2 missiles, formation and commissioning of the flight task is carried out by a universal control system (SU) missile system 3R-14N. It is an automated system that operates in real time as part of the carrier ship's combat information and control system (BIUS). The Demand-M BIOS developed by JSC NPF Meridian is installed on project 11356 ships.

Require-M" BIS is an open distributed adaptive computing system. Conjugation of the rocket complex with BIUS is carried out through the digital channel of a local network by means of special devices of conjugation. According to the target designation and commands from the BIOS "Requirement-M" and the navigation system of the carrier ship of the rocket system SU produces data for firing, manages the prelaunch preparation and launch of missiles for various purposes from the complex, as well as routine inspection of systems and missiles. Information on the status of the missile system, the availability of ammunition, plans for its use, control commands are transmitted in graphical and tabular form to the automated workstations (AWS) BIUS "Require-M". This ensures centralised control of all the ship's weapon systems with a view to their optimal use for various combat tasks, including control of the ship's combat operations against submarines and the use of anti-submarine weapons. All instruments in the missile system's control system (except for the missile weapon control console) are unmanned, maintenance-free, spray and waterproof. The equipment is fire- and explosion-proof and does not require cooling during operation.

Regulatory maintenance of missiles in the process of storage at the base and their preparation for loading on the carriers provides a universal complex of ground equipment from the complex.