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Nuclear Weapons Test-Cannon-Grable 15KT

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Upshot-Knothole Grable was a nuclear weapons test conducted by the United States as part of Operation Upshot-Knothole. Detonation of the associated nuclear weapon occurred shortly after its deployment at 8:30am PDT (1530 UTC) on May 25, 1953, in Area 5 of the Nevada Test Site. The codename Grable was chosen because the letter Grable is phonetic for, G, stands for "gun", since the warhead was a gun-type fission weapon. It was in the form of a shell, or artillery-fired atomic projectile (AFAP), the first of its kind. Grable was only the second gun-type warhead ever detonated (the first was Little Boy, the weapon used against Hiroshima; all other atomic weapons were and are implosion-type weapons). The shell, designated a Mark 9 nuclear weapon, had a diameter of 280 mm (11.02 in), was 54.4 in. (138 cm) long and weighed 803 lb. (364 kg) The gun it was fired from had a muzzle velocity of 2,060 ft/s. (625 m/s), for a nominal range of 20 miles, and weighed 85 t (77 metric tons). The detonation of Grable occurred 19 seconds after its firing.[1] It detonated over 11,000 yards (over 6.25 miles, 10 km) away from the gun it was fired from, over a part of NTS known as Frenchman Flat. The explosion was an air burst of 524 ft. (160 m) above the ground (24 ft./7 m above its designated burst altitude), 87 ft. (26 m) west and 136 ft. (41 m) south of its target (slightly uprange). Its yield was estimated at 15 kilotons, around the same level as Little Boy. An anomalous feature of the blast was the formation of a precursor, a second shock front ahead of the incident wave. This precursor was formed when the shock wave reflected off the ground and surpassed the incident wave and Mach stem due to a heated ground air layer and the low burst height. It resulted in a lower overpressure, but higher overall dynamic pressure, which inflicted much more damage on drag sensitive targets such as jeeps and personnel carriers. This led strategists to rethink the importance of low air bursts in tactical nuclear warfare.

Channel: Education
Uploaded: December 31, 1969 at 4:59 pm
Author: antogrimes85

Length: 02:25
Rating: 4.7865167
Views: 97432

Tags: COLD  WAR  NUKES  NUCLEAR  WEAPONS  ATOMIC  BOMB  TESTING  SOVIET  Missle  history  physical  science  social  political  

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cheeseisreallyhot (December 31, 1969 at 4:59 pm)
What if a country like North Korea decides to fire one of their dirty Nukes into South Korea, or What if Pakistan Nukes India, and then India Fires back into Pakistan? They aren't as financially connected to the rest of the world as some of the bigger Nuclear powers. The United States is also allied with Pakistan, so that could get messy.
GilbertsonDerick (December 31, 1969 at 4:59 pm)
Every nation depends on one another too much for an all-out nuclear holocaust. Money runs the world, so as long as we're all financially connected, such devastation is highly unlikely. The reason for the large number of nuclear weapons is because of the retarded ideology of who ever has the most firepower has the bigger balls. Yep, even the world's superpowers act like 14 year old boys.
cheeseisreallyhot (December 31, 1969 at 4:59 pm)
This is why the world is going to end Very soon United States Roughly 5,000 active Fission/Nuclear Weapons Russia Roughly 6,000 Active Fission/Nuclear Weapons It will only take 80-90 nuclear explosions to destroy everyone on the Face of the Planet.
TheEvelynski (December 31, 1969 at 4:59 pm)
h o l y c r a p
rlndmenjivar (December 31, 1969 at 4:59 pm)
you has to use goggles to watch it. XD
sphere1988 (December 31, 1969 at 4:59 pm)
Do we get radiated watching the clip? ;p
wickedbadb (December 31, 1969 at 4:59 pm)
you wouldnt shit your pants because you would be dead before you could L0L
rlndmenjivar (December 31, 1969 at 4:59 pm)
i would shit my pants if i drop that bullet at 0:07
panacea999 (December 31, 1969 at 4:59 pm)
This has go to be one of the most dangerous test for the personnel: what if the shell exploded in the barrel?
Kvock (December 31, 1969 at 4:59 pm)
It may have, this test is only .3KT less than the bomb dropped on Hiroshima. But then again, no two explosions look alike.

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