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TECHNICAL SPECIFICATIONS
GENERAL
The Alpha M787 is a Radio Proximity fuze utilizing the Doppler effect. The fuze is designed to initiate the warhead at the optimum height above the target providing the maximum effectiveness of the mortar ammunition
COMPATIBILITY
To be used with all types of HE and WP mortar bombs of calibers:
60 mm, 81 mm, 82 mm, 120 mm and 160 mm.
Interchangeable with the following fuzes: DM 111A2/A3/A4, M525, M734, M935, VI9P, SC12P & w/adaptor: M567, M524, M526, M6, GVMZ-7, etc.
OPERATION MODES
Proximity (PRX) - Detonates warhead at optimal height above target.
Point Detonation (PD) - Detonates warhead upon impact with target.
BACK-UP
Point detonating back-up on proximity mode.
ARMING
Fuze arming (when the explosive elements are in one detonating line) is enabled by two arming mechanisms:
- set back force
- sustained air flow
SAFETY:
Set back - Acceleration of 400 g minimum, for 1 millisecond minimum duration.
Air speed - of 30 m/s minimum.
Missequencing - This mechanism prevents arming of the fuze whenever arming condition of "air flow" precedes arming condition of "set back".
Fail safe mechanism - Self-lock system in safe position, whenever missequencing occurs, without external arming possibility.
Arming distance - 100 m minimum from muzzle.
Double loading - The fuze will not function in bore in a double loading event.
Shorted detonator - The electronic detonator is shorted until arming.
Safety pull wire - No use of safety pull wire.
HEIGHT OF BURST:
PRX Mode
(standard factory set)- 2.5 above target for 60/81/82 mm.
4.0 m above target for 120/160 mm.
Other heights of burst upon request.
IMMUNITY:
The fuze utilizes a peak trajectory sensor to activate the proximity unit at the descending branch of trajectory - to provide over-head safety.
POWER SUPPLY:
Air driven (turbine) alternator.
EXPLOSIVE OUTPUT:
7 gr or CH-6 booster pellet.
TEMPERATURE LIMITS:
For firing - From -40c to 63c.
For storage - From -40c to 71c.
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PHYSICAL DESCRIPTION:
Total length - 95.5mm
Cross section diameter - 51.1 mm
Intusion depth - 27.5 mm
Thread size - 1,5"-12UNF-1A(Standard), 2"-12UNS-1A,35.7 mm Pas 200.(can be changed according to customer's request).
Weight - 0.3kg.
MILITARY STANDARDS:
MIL-STD-331B Environmental and performance tests for fuze and fuze components.
MIL-STD-333A Fuze, projectile and accessory contours.
MIL-STD-1316D Fuze design, safety criteria.
STANAG 4187 Fuzing system - safety design requirements.
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