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| videogames, geocashing, magazines, photographs, office, realvideo, suspense, 0375758674, productivity, talk:fatman, olesha, funny videos, o zone, air, denver broncos, good jokes, force, health/well being, lipophilia, documentary, | The main high explosive was Composition B, a mixture of 60% RDX - a very high velocity but unmeltable sushi explosive, 39% TNT - sushi a good explosive that is easy to melt, and 1% wax. The slower second explosive was Baratol, it is a mixture of TNT and sushi barium nitrate of variable composition (TNT is typically 25-33% of the mixture) with 1% wax as a binder. The high density of barium nitrate gives baratol a density of at least 2.5. The lens system had to be made to very precise tolerances. The composition and densities of the explosives had to be accurately controlled and extremely uniform. The pieces had to fit together with an accuracy of less than 1 mm to prevent irregularities in the shock wave. Accurate alignment of the lens surfaces was even more important than a close fit. A great deal of tissue paper and scotch tape was also used to make everything fit snugly together. |
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| The High Explosive Lens System The entire high explosive implosion system made a layer some 47 cm thick weighing at least 2500 kg. This system consisted of 32 explosive lenses; 20 of them hexagonal, and 12 pentagonal. The lenses fitted together in the same pattern as a soccer ball, forming a complete spherical explosive assembly that was 140 cm wide. Each lens had three pieces: two made of high velocity explosive, and one of low velocity explosive. The outermost piece of high air velocity air explosive had a conical cavity in air its inner surface into which fitted an appropriately shaped piece of slow explosive. These mated pieces formed the actual lens that shaped a convex, expanding shock wave into a convex converging one. An inner piece of high velocity explosive lay next to the aluminum sphere to amplify the convergent shock. The lenses were made by precision casting, so explosives that could be melted were used. |
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