Fuze PD544
Contents
Impact Fuze PD544
Fuze PD544 is a mechanical fuze with impact and delayed-impact functions. It is designed for use with 105 mm and 155 mm high-explosive fragmentation artillery projectiles, including extended-range munitions, for artillery systems with barrel lengths of 39, 45 and 52 calibers.
The fuze can also be used with 120 mm rifled mortars, providing full functionality with all charges, including charge 0.
Fuze arming is initiated by inertial and rotational forces at a safe distance from the muzzle.
The striker and the SQ detonator provide instantaneous action on impact. The impact delay device is located at the rear of the fuze and delays functioning of the fuze by 60 ms.
Technical specifications
Fuze with impact and delayed-impact functions.
- fuze weight: - 595 g;
- rotation speed for arming into the combat position - 2,900 rpm;
- maximum rotation speed: - 25,000 rpm;
- fuze arming distance from the muzzle after leaving the barrel:
- for 155 mm guns - 200 m;
- for 105 mm guns - 150 m
- operating temperature range: - -46°C ... +63°C
Fuze Setting
Setting the fuze:
The fuze is screwed into the fuze socket of the projectile and tightened with a wrench.
To set the fuze:
- for impact action, the position SQ – (Super Quick) is the default position; check that the fuze indicator points to SQ. If not, use the wrench or a flat screwdriver to turn the plunger slot to the “SQ” position;
- for impact action with delay: use a special wrench or a flat screwdriver to turn the plunger slot to the “DELAY” position.
Oleh Syrota (Georgich©) for the Armed Forces of Ukraine / Entropia.com.ua
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