goran_croatia
Well-Known Member
This croatian experimental bouncing mine was constructed in the factory Brodosplit (shipyard in the city Split in Croatia) as one of four different experimental types of bouncing mines constructed and invented by chief of PGB team from Brodosplit. It was constructed in 1995, two months before end of the war in Croatia. The first idea of it's inventor was to make single PGB-02 standard body as it was used in PGB X01 and PGB X02 but to put plastic expelling cap on it's bottom to make it waterproof. The initial drawing was transformed during first testing in the manner that the bottom expelling cap was made in different shape and with central hole with thread for the option to make dual action bouncing mine. That option includes one more body of GB-01 but without primer at the upper part of central tube. Instead of the primer,the central tube of the other GB-01 body had black powder initial charge and below that charge it had delay mixture that was burning for 2 seconds. That option considered using two GB-01 bodies screwed together.
The principle of action when two GB-01 bodies were screwed together to make dual action bouncing mine was:
After pulling the safety pin of the tripwire pull fuze (fuze on photos on GB-01 from my collection was made in Brodosplit) the firing pin in the fuze would impact in the primer and activate it. The primer would ignite the propelling charge at the bottom part of the mine. At the same time,the bursting of propelling charge would ignite the black powder initial charge on the top part of the central tube in the second GB-01 body. The first body GB-01 would bounce from the ground and the delay fuze on it's bottom would ignite the detonator and the mine would detonate 2 meters abowe the ground. Two seconds later, the delay mixture in the second GB-01 body would ignite the propelling charge in the second GB-01 body and it would bounce also from the ground and detonate. That means that delay between detonation of the first and second GB-01 bodies was 3,5 seconds (2 second to burn the delay in the second mine body and 1,5 seconds to burn the delay in the bottom fuze for activation of the second GB-01 body.
That mine was tested and the testing was successfully.
You can see on my photos inert GB-01 from my collection and also the photo of GB-01 transformed in dual-action bouncing mine using two GB-01 bodies. That photo I made in Brodosplit museum.
Also the last two photos are all four types of experimental bouncing mines made and invented in Brodosplit in 1995 together.From left to right: GB-01, GB-02, GB-03 and GB-04.
The principle of action when two GB-01 bodies were screwed together to make dual action bouncing mine was:
After pulling the safety pin of the tripwire pull fuze (fuze on photos on GB-01 from my collection was made in Brodosplit) the firing pin in the fuze would impact in the primer and activate it. The primer would ignite the propelling charge at the bottom part of the mine. At the same time,the bursting of propelling charge would ignite the black powder initial charge on the top part of the central tube in the second GB-01 body. The first body GB-01 would bounce from the ground and the delay fuze on it's bottom would ignite the detonator and the mine would detonate 2 meters abowe the ground. Two seconds later, the delay mixture in the second GB-01 body would ignite the propelling charge in the second GB-01 body and it would bounce also from the ground and detonate. That means that delay between detonation of the first and second GB-01 bodies was 3,5 seconds (2 second to burn the delay in the second mine body and 1,5 seconds to burn the delay in the bottom fuze for activation of the second GB-01 body.
That mine was tested and the testing was successfully.
You can see on my photos inert GB-01 from my collection and also the photo of GB-01 transformed in dual-action bouncing mine using two GB-01 bodies. That photo I made in Brodosplit museum.
Also the last two photos are all four types of experimental bouncing mines made and invented in Brodosplit in 1995 together.From left to right: GB-01, GB-02, GB-03 and GB-04.
