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GENERAL:
The M176 is an Electronic Point Detonating (EPD) fuze for artillery rocket systems. This fuze fully complies with the STANAG4187, MIL-STD-1316D and does not use a safety pull-wire.
COMPATIBILITY:
With artillery rockets having high explosive (HE) warheads, of calibres of 2.75", 110mm to 300mm. The fuze is designed to fit different sizes of fuze cavities, with minor modifications (adaptors).
ARMING:
Fuze arming (when the explosives are in one detonating line) is done by two independent arming mechanisms:
Set back forces for a minimum duration.
Sustained air flow through the fuze.
SAFETY:
Set-back:Acceleration of 20 g minimum for a duration of 0.1sec. minimum.
Air Flow:100m/s minimum.
Missequencing:The mechanism prevents arming of the fuze whenever arming condition of "air flow" precedes arming condition "set Back."
Fail safe mechanism: Self-lock system in safe position, whenever missequencing occurs without external arming possibility.
Arming distance (SSD):500m minimum from muzzle.
Shorted detonator:The electronic detonator is shorted until full arming is achieved.
POWER SUPPLY:
Air driven (turbine) alternator
EXPLOSIVE ELEMENTS:
Detonator - Microdetonator, electric 1DT160/D185BO (m100)
Lead charge - PA510
Booster pellet - 32gr. of CH-6
TEMPERATURE LIMITS:
For firing - from -40c to +63c.
For storage - from -54c to +71c.
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PHYSICAL DESCRIPTION*
Total length - 183.55mm
Intrusion depth - 55.0mm
Cross section diameter - 64.0mm
Thread size - M45 x 2 -6g
Weight - 0.75 kg
*Note: The dimensions given here are for the 122m rocket version.
MILITARY STANDARDS:
MIL-STD-331B - Environmental and performing tests for fuze and fuze components.
MIL-STD-1316D - Fuze design safety criteria.
STANAG-4187 - Fuzing system - safety design requirements.
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