Proximity Fuze M728 (M728)
Contents
Proximity Fuze M728. Time fuze
M728 a fuze from an American manufacturer, a high-explosive fragmentation (HE) proximity fuze (Prox) used with standard NATO 155 mm high-explosive munitions. It has impact action (PD).
The fuze contains a continuous radio transmitter/detector with antennas and a power source that performs the target detection function. The timing mechanism is synchronized with the radio transmitter to increase the reliability of fuze functioning.
The fuze scale is set to the specified time of surface impact. When approaching the target, radio-wave transmission starts 5 seconds before the set time. When the reflected signal reaches a specified amplitude, the electronic switch activates the explosive train at the optimal distance from the target. If this mode does not work, on contact with a surface the fuze will detonate on impact action (PD).
The fuze is designed for air burst, so its most effective use is against enemy personnel and lightly armored targets.
Technical specifications
- visible length: 95 mm
- overall length: 218.44 mm
- weight: 993 g
Usage notes
The fuze is cleared for use in rain and snow.
Fuze Setting
Setting the fuze:
The fuze is screwed into the nose of the projectile using a wrench. The setting scale, with divisions in the range of 5–100 s, is set to the specified time before impact with the target.
If only impact action is required, the fuze scale must be set to any time greater than the time of impact.
When approaching the target, radio-wave transmission starts 5 seconds before the set time. When the reflected signal reaches a specified amplitude, the electronic switch activates the explosive train at the optimal distance from the target. If this mode does not work, on contact with a surface the fuze will detonate on impact action (PD).
Oleh Syrota (Georgich©) for the Armed Forces of Ukraine / Entropia.com.ua
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