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Although the Mk82's nominal weight is 500 lb (230 kg), its actual weight varies depending on its configuration, from 510 to 570 lb (230 to 260 kg). It is a streamlined steel casing containing 192 lb (87 kg) of Tritonal high explosive. The Mk82 is offered with a variety of fin kits, fuzes, and retarders for different purposes.
The 1954 series of high-drag bombs was built in six sizes: 550 lb (250 kg), 1,100 lb (500 kg), 3,300 lb (1,500 kg), 6,600 lb (3,000 kg), 11,000 lb (5,000 kg), and 20,000 lb (9,000 kg). A feature of the 1954 series of bombs is the ballistic ring on the nose of the bomb which acts as a vortex generator to aid the bomb's stabilizers. [ 10 ]
The GBU-12 Paveway II is an American aerial laser-guided bomb, based on the Mk 82 500 lb (230 kg) [3] general-purpose bomb, but with the addition of a nose-mounted laser seeker and fins for guidance. A member of the Paveway series of weapons, Paveway II entered into service c. 1976 .
On 20 February 2024 an unexploded SC 500 was found in a garden in Plymouth, England during building work; the area was evacuated for three days. The bomb was eventually removed and detonated at sea. [2] On 15 August 2024 an SC 500 was found on a building site on the Rivenwood housing development in Newtownards, County Down.
In comparison, the blast yield of the GBU-43 Massive Ordnance Air Blast bomb is 0.011 kt, and that of the Oklahoma City bombing, using a truck-based fertilizer bomb, was 0.002 kt. The estimated strength of the explosion at the Port of Beirut is 0.3-0.5 kt. [ 9 ] Most artificial non-nuclear explosions are considerably smaller than even what are ...
Bomb disposal personnel from the Japanese Ground Self Defense Force determined that the explosion was caused by an American 500-pound bomb that was likely dropped during a World War II air raid.
The bomb consists of a forged steel case with 96 pounds (44 kg) of Composition H6, Minol or Tritonal explosive. The power of the Mk 81 was found to be inadequate for U.S. military tactical use, and it was quickly discontinued, although license-built copies or duplicates of this weapon remain in service with various other nations.
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