Cutaway model of a Czech 4,7 cm Panzersprenggranate (Armour piercing High Explosive) 36 for the 4,7 cm Pak 36 (t) (t stands for Czech in the German nomenclature)
The steel projectile has a hardened nose down to the top of the explosive charge cavity. A mild steel piercing cap has been brassed on top of the projectile to devide the force of the impact on the target over the entire nose, thus preventing the nose from shattering to pieces upon impact. The piercing cap also prevents the projectile from bouncing off when hitting the target under a low angle.
The drivingband of the projectile is made of red copper and has a rim on top to enshure a centered and straight fit in the shellcase as the greatest portion of the drivingband is placed inside the shellcase. The top of the shellcase is rolled in, locking the projectile on the shellcase, just below the rim on the drivingband.
A paste called Tugra (brown) is placed in the open space between shellcase and projectile, enshuring the powder is held dry and the projectile is glued into the shellcase.
The explosive charge exists of a 15,8 grams charge of FP02 (TNT), packed in a cartboard container. The top of the container is filled with an inert mass (cartboard / magnesiumkit) to enshure the heat of the impact does not set off the main charge too early. The weight of the complete packed charge is 17,6 grams. The complete charge in glued into the explosives cavity.
The base fuze used in the projectile is the Bdz. (Bodenzunder / base fuze) PD28. The fuze exists of a steel base plug, housing the tracer (tracer element No.8) in the base and threaded on the inside in the top to receive the inner parts of the fuze and the detonator.
The inner parts of the fuze are a steel delay housing also housing the detonator- , the aluminium firing pin and the safety cylinder, screwed into the base of the steel delay housing.
The aluminium firing pin is held in backward position by a creep spring and locked in position by two balls that fall half in the firing pin, half in the holes of the aluminium safety cylinder. The two holes are drilled in a 45 degr. upward angle. Upon firing the setback force keeps the balls in backward position, locking the firing pin in the afterward position. After leaving the barrel, the centrifugal force throws the balls outward; the balls start to climb up the angled holes, releasing the firing pin. Upon impact the firing pin creeps forward, igniting the firing cap (red).
The delay housing houses the so called dynamic pyrotechnic delay. After the firing cap (red) has exploded, the flame travels upward in to a cup (light blue) with four radial holes. Through these holes the lower black powder pellet below the piston (green) is ignited and burns away. The heat of the burning flame ignites the upper black powder delay pellet around the stem of the piston. A red cupper ring on top of this stem blocks the flame from entering the flame hole of the detonator. As the powder in the lower chamber has burnt empty, the ignition of the upper chamber will press the piston and the cup (light blue) down, opening the flame hole of the detonator and allowing the flame into the detonator. The time lapse between the burning away of the lower pellet and the ignition of the upper pellet forms the delay enshuring the projectile explodes after passing the enemy armour.
Vo: 782 mtrs/sec
Weight of projectile : 1,65 kg
Penetration: Pzgr 36 (t) ;
100 mtrs : 54 mm
500 mtrs : 48 mm
1000 mtrs : 41 mm
1500 mtrs : 35 mm
The shellcase is made of copper clad steel and is 404 mm long. It has a firing pin activated firing cap with a tube shaped ignition charge. The powdercharge exists of 459 grams Nigl. Str. P. M36 (1 10/320) ; 10 mm wide , 320 mm long and 1 mm thick strips of powder.
A rolled up lead wire on top of the main charge acts as a decoppering agent , cleaning the barrel of red copper left behind in the grooves of the land and grooves. On firing the propelling charge, this lead melts, forming a hard and brittle copper and lead alloy with the copper left behind. The next round will push this alloy out of the barrel, thus cleaning it.
As can be observed in the pictures there are two types of drivingbands on the projectiles, the type with a red copper drivingband and the later type with FES drivingbands.
Regards, DJH
The steel projectile has a hardened nose down to the top of the explosive charge cavity. A mild steel piercing cap has been brassed on top of the projectile to devide the force of the impact on the target over the entire nose, thus preventing the nose from shattering to pieces upon impact. The piercing cap also prevents the projectile from bouncing off when hitting the target under a low angle.
The drivingband of the projectile is made of red copper and has a rim on top to enshure a centered and straight fit in the shellcase as the greatest portion of the drivingband is placed inside the shellcase. The top of the shellcase is rolled in, locking the projectile on the shellcase, just below the rim on the drivingband.
A paste called Tugra (brown) is placed in the open space between shellcase and projectile, enshuring the powder is held dry and the projectile is glued into the shellcase.
The explosive charge exists of a 15,8 grams charge of FP02 (TNT), packed in a cartboard container. The top of the container is filled with an inert mass (cartboard / magnesiumkit) to enshure the heat of the impact does not set off the main charge too early. The weight of the complete packed charge is 17,6 grams. The complete charge in glued into the explosives cavity.
The base fuze used in the projectile is the Bdz. (Bodenzunder / base fuze) PD28. The fuze exists of a steel base plug, housing the tracer (tracer element No.8) in the base and threaded on the inside in the top to receive the inner parts of the fuze and the detonator.
The inner parts of the fuze are a steel delay housing also housing the detonator- , the aluminium firing pin and the safety cylinder, screwed into the base of the steel delay housing.
The aluminium firing pin is held in backward position by a creep spring and locked in position by two balls that fall half in the firing pin, half in the holes of the aluminium safety cylinder. The two holes are drilled in a 45 degr. upward angle. Upon firing the setback force keeps the balls in backward position, locking the firing pin in the afterward position. After leaving the barrel, the centrifugal force throws the balls outward; the balls start to climb up the angled holes, releasing the firing pin. Upon impact the firing pin creeps forward, igniting the firing cap (red).
The delay housing houses the so called dynamic pyrotechnic delay. After the firing cap (red) has exploded, the flame travels upward in to a cup (light blue) with four radial holes. Through these holes the lower black powder pellet below the piston (green) is ignited and burns away. The heat of the burning flame ignites the upper black powder delay pellet around the stem of the piston. A red cupper ring on top of this stem blocks the flame from entering the flame hole of the detonator. As the powder in the lower chamber has burnt empty, the ignition of the upper chamber will press the piston and the cup (light blue) down, opening the flame hole of the detonator and allowing the flame into the detonator. The time lapse between the burning away of the lower pellet and the ignition of the upper pellet forms the delay enshuring the projectile explodes after passing the enemy armour.
Vo: 782 mtrs/sec
Weight of projectile : 1,65 kg
Penetration: Pzgr 36 (t) ;
100 mtrs : 54 mm
500 mtrs : 48 mm
1000 mtrs : 41 mm
1500 mtrs : 35 mm
The shellcase is made of copper clad steel and is 404 mm long. It has a firing pin activated firing cap with a tube shaped ignition charge. The powdercharge exists of 459 grams Nigl. Str. P. M36 (1 10/320) ; 10 mm wide , 320 mm long and 1 mm thick strips of powder.
A rolled up lead wire on top of the main charge acts as a decoppering agent , cleaning the barrel of red copper left behind in the grooves of the land and grooves. On firing the propelling charge, this lead melts, forming a hard and brittle copper and lead alloy with the copper left behind. The next round will push this alloy out of the barrel, thus cleaning it.
As can be observed in the pictures there are two types of drivingbands on the projectiles, the type with a red copper drivingband and the later type with FES drivingbands.
Regards, DJH
