The Bottom Mine PDM-250 is designed to be effective against marine surface vessels or submarines of any class. The functioning of its fuse is based upon a state-of-art analysis of the hydro acoustic, sonar and three-component magnetic sensors that the target generates.
The electronic block autonomously analyses the signals from sensor system according to pre-set complex algorithm and generates detonation command only if presence of target is detected above the mine.
The device contains a unified non-contact fuse with three safety locks: transportation, mechanical and electronic to prevent unintended activation. After removing the first safety lock and submerging the device, the second safety lock is activated.
The shape of the mine, as well as its completely non-magnetic structure and special antisonar camouflage coating(optional), ensure that it merges with the environment and hard to detect.
| Technical characteristics | |
|---|---|
| Dimensions of the warhead PDM-250, mm | 1300 x 780 x 350 |
| Dimensions of the fuse FPDM-250MA, mm | diameter 380, height 396 |
| Mine weight, kg | 440 |
| Weight of the main charge of the warhead (cast TNT), kg | 250 |
| Transition into armed state | On expiration of the safety time counted by a microprocessor timer |
| Duration of armed state, days (time interval to mine detonation) | from 6 to 365 |
| Rate (number of targets skipped without mine detonation) | programmable from 0 to 9 |
| Operating depth, m | from 10 to 50 |
| Operating temperature, °C | from -4° to +40° |
| Storage temperature, °C | from -30° to +60° |
| Storage under shed, years | 20 |
