FUZE AR-MD For Mortar Ammunition
AR-MD is a mechanical, nose, point-detonating fuze with super-quick action and distant arming. The fuze features highly sensitive impact mechanism and actions on solid ground, marshy ground and snow.< ...
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PROXIMITY FUZE AR-787 for Mortar Ammunition
The AR-787 is Proximity fuze utilizing the Doppler Effect. The fuze is designated to initiate the warhead at the optimum height above the target providing the maximum effectiveness of the mortar ammunition.The fuze completes all types 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: DM111A2 / A3 / A4, M525, M734, M935, V19P, SC12P & with adaptor: M567, M524, M526, etc.The fuze is safe in storage, handling and operation and ensures the safe and reliable function of the ammunition in all weather conditions
OPERATION MODES
- Proximity (PRX): Detonates warhead at optimal height above target.
- Point Detonating (PD): Detonates warhead up-on 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 FEATURES:
HEIGHT OF BURST:
Other heights of burst upon request.
TEMPERATURE LIMITS
PHYSICAL DESCRIPTION
MILITARY STANDARDS
- Proximity (PRX): Detonates warhead at optimal height above target.
- Point Detonating (PD): Detonates warhead up-on 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 FEATURES:
| - 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 | 2.5 m above target for 60/81/82 mm. |
| (standard factory set) | 4.0 m. above target for 120/160 mm. |
| 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 g of CH-6 booster pellet. |
TEMPERATURE LIMITS
| - For firing | From -40°C to 63°C |
| - For storage | From -40°C to 71°C. |
PHYSICAL DESCRIPTION
| - Overall Length | 95.5 mm. |
| - Cross Section Diameter | 51.1 mm |
| - Intrusion 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 | 0.3 kg. |
MILITARY STANDARDS
| MIL-STD-331B | Environmental and performance test 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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