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Nagasaki atomic bomb, Nagasaki atomic bombsilverIt is connected here.The actual deployment of these nuclear weapons into World War IIthe contents aboutAtomic bombings on Hiroshima and Nagasaki documentcastPlease note.1. outline
The atomic bomb dropped on the city of Nagasaki in the Empire of Japan during World War II , the first plutonium atomic bomb in history. The classification number is ‘mk.3’.
It is the second atomic bomb in human history , and the last to date, actually used in war .
2. Detail
Earlier, it was larger than Little Boy , who fell to Hiroshima , so it was named 'Fat Man'. Little Boy is longer, but the thickness is thicker. Power is 21 kt.[1] The name of this bomb was Churchill . Churchill's nickname was Patman. It weighs about 4,670 kg. Later, the B41 produced is 1,000 times stronger than this, but you can see the great technology development. The length is 3.3m and a diameter of 1.5m and is very thick. It fits the name Patman. Plutonium is said to have only 6.2kg in the form of a soccer ball .
U238, the most common form of uranium found in nature[2] It was also used as a neutron reflector. Also, before and after detonating this guy, a conventional bomb called the Pumpkin Bomb, with a similar name to Fat Man, was developed. This guy's weight is almost the same as the Fat Man, and the shape is actually the same, so it's a bomb that was used quite often. In fact, on July 20, 1945, Captain Claude Iserley of Straight Flush, one of the famous Enola Gay aircraft, dropped this pumpkin bomb towards the Imperial Palace. This was considered to be a violation of orders, and Straight Flush's status was changed to Little Boy Drop. I went down from the mission to a weather observation plane.
The atomic bomb named 'Gadget' used during the Trinity experiment is the prototype of this atomic bomb .
The only thing that was used in practice was Patman, who fell to Nagasaki on August 9, 1945, but 120 were mass -produced during the Cold War . Of course, the initial atomic bomb was retired by a higher efficiency later model. MK.4, MK.6, MK.18, which are developed after Patman[3] They are all improved models of Patman. And the RDS-1 , the first Soviet atomic bomb, is almost the same as Patman.
As a delivery method , it could be mounted on the B-29 , which dropped the Fat Man on Nagasaki, as well as the B-36 and B-50 , and the improved models Mk.6 and Mk.18 could also be mounted on the B-47 Stratojet , B-52 , A-2 , and A-3 .
The bombs with the code names 'Able' and 'Baker' that were tested on Bikini Island during Operation Crossroads were of this type.
source
YouTube video demonstrating the principle of detonation .
Unlike Little Boy , which is a barrel-type atomic bomb using enriched uranium , Fat Man uses implosion-type nuclear fission. A high-speed + low-velocity explosive consisting of TNT , RDX , barium nitrate , etc. surrounding the plutonium causes the plutonium inside to clump together, and at the same time applies pressure to induce it to become critical mass.
Nagasaki, where Fat Man was dropped, was not the original target. The original target was Kokura , the location of the Yahata Steel Works, but it was not in a situation to drop due to bad weather, so the target was changed to Nagasaki.
U238, the most common form of uranium found in nature[2] It was also used as a neutron reflector. Also, before and after detonating this guy, a conventional bomb called the Pumpkin Bomb, with a similar name to Fat Man, was developed. This guy's weight is almost the same as the Fat Man, and the shape is actually the same, so it's a bomb that was used quite often. In fact, on July 20, 1945, Captain Claude Iserley of Straight Flush, one of the famous Enola Gay aircraft, dropped this pumpkin bomb towards the Imperial Palace. This was considered to be a violation of orders, and Straight Flush's status was changed to Little Boy Drop. I went down from the mission to a weather observation plane.
The atomic bomb named 'Gadget' used during the Trinity experiment is the prototype of this atomic bomb .
The only thing that was used in practice was Patman, who fell to Nagasaki on August 9, 1945, but 120 were mass -produced during the Cold War . Of course, the initial atomic bomb was retired by a higher efficiency later model. MK.4, MK.6, MK.18, which are developed after Patman[3] They are all improved models of Patman. And the RDS-1 , the first Soviet atomic bomb, is almost the same as Patman.
As a delivery method , it could be mounted on the B-29 , which dropped the Fat Man on Nagasaki, as well as the B-36 and B-50 , and the improved models Mk.6 and Mk.18 could also be mounted on the B-47 Stratojet , B-52 , A-2 , and A-3 .
The bombs with the code names 'Able' and 'Baker' that were tested on Bikini Island during Operation Crossroads were of this type.
source
YouTube video demonstrating the principle of detonation .
Unlike Little Boy , which is a barrel-type atomic bomb using enriched uranium , Fat Man uses implosion-type nuclear fission. A high-speed + low-velocity explosive consisting of TNT , RDX , barium nitrate , etc. surrounding the plutonium causes the plutonium inside to clump together, and at the same time applies pressure to induce it to become critical mass.
Nagasaki, where Fat Man was dropped, was not the original target. The original target was Kokura , the location of the Yahata Steel Works, but it was not in a situation to drop due to bad weather, so the target was changed to Nagasaki.
3.
[1] In Korean Wikipedia and English Wikipedia , the power is 21kt, but in Korean Wiki, the nuclear power is 22kt, and in English Wiki, it is 20kt.[2] This is the majority of uranium that exists in nature. From this, nuclear fission raw materials are extracted by concentrating U235, and of course, nuclear fission cannot occur with U238 alone.[3] The most powerful atomic bomb in the United States was 500kt. In the 1952 Ivy King nuclear test, the B-36 dropped it to the Ennie Wettok Collection.[4] He was the first to design the detonation lens, an important detonator .
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