Bulgarian anti-helicopter mines


Bulgarian anti-helicopter mines

The 4AHM-100, AHM-200, AHM-200-1, AHM-200-2, PMN-150, and PMN-250 are Bulgarian directional fragmentation mines that can be used with proximity fuzes to function as anti-helicopter mines.

Description

The systems were developed by the Institute of Metal Science and are based around electronic fuses with broadly similar functionality. The fuses use two sensors. The first, an acoustic sensor, arms the mine as a helicopter approaches. The second sensor is a radar sensor, which locates the target and triggers the mine at the optimal point. The mines all use a number of large Misznay Schardin effect warheads to project large numbers of fragments to an effective range of around 200 meters. "Jane's Mines and Mine Clearance" speculates that IFF could be integrated into the fuse circuit to discriminate against friendly aircraft.

Mines

PMN-150 and PMN-250

The PMN-150 and PMN-250 are large directional fragmentation mines that scatter fragments in a 60 degree horizontal arc. The PMN-150 produces approximately 1,500 fragments that have an effective range of 150 meters. The PMN-250 is a larger mine which produces 2,100 fragments that have an effective range of 250 meters. The mines have a number of electronic fuses available including three microwave fuses, an acoustic fuse and a seismic sensor. The mines can be remotely triggered or deactivated.

Anti-Transport Mine

The "Anti-Transport Mine" is a large circular directional fragmentation mine that uses an internal fragmentation matrix and five Misznay-Schardin plates. The fragmentation matrix produces a large number of small fragments, and the Misznay Schardin plates produce large fragments that can penetrate armoured vehicles.

The mine appears to be based on the PMN-250 mine, and the mine is likely to have an effective range of 250 meters.

4AHM-100

The 4AHM-100 uses four 30 kilogram mines with a single central sensor. The mines are triggered simultaneously when the sensor detects a target inside the effective footprint of the mines. The mine is currently at the prototype stage.

AHM-200

The AHM-200 weighs 35 kilograms and contains 12 kilograms of TNT. The mine's warhead has two sections, a large rectangular warhead with a pre-notched fragmentation liner that produces 1,960 fragments, and a secondary warhead with five Misznay Schardin plates that produce large self-forging fragments. The fragments scatter in an arc of 20 degrees to an effective range of 200 meters, and will penetrate 10 millimeters of armour at 100 meters.

AHM-200-1

The AHM-200-1 weighs 90 kilograms. Like the AHM-200 it consists of two sections, a large circular fragmentation warhead with a filling of ball bearings, and a horizontal section with five Misznay Schardin effect plate charges. The two sections are mounted on a sturdy tripod with a sensor mounted above that contains a Doppler radar fuse and an acoustic fuse. The mine has an effective range of about 100 meters.

AHM-200-2

The AHM-200-2 weighs 90 kilograms, and is similar to the AHM-200-1, except that it uses a rectangular fragmentation warhead that produces 1,960 fragments.

References

* "Jane's Mines and Mine Clearance 2005-2006"


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