Shaped charge penetration equation

P pound grenade designed for anti-tank use. By comparison, a standard AP shell fired from a nm gun with a muzzle velocity of feet per second will penetrate 3. As mentioned earlier, the Jet velocity- decreases continually from the front to the rear; hence the Jet becomes longer and longer. In England, the Hayrick or "stock" charge was developed for such purposes during 7orld far II. Eight shots were fired on granodiorlte using conical charges of ? Jet perforators are used principally for the more difficult shots.
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Shaped charge

The later were carried in clusters of The steady state in b transferred to a coordin- ate system moving at the penetration velocity U. A Smoothed Particle Hydrodynamics SPH method with a mesh-free and Lagrange formulations has natural advantages in solving extremely dynamic problems. As for the SPS structure, its damage zone was smaller, and the jet trended to bend becoming thinner due to the resistance of the composite layer. Optimum wall thickness also increases as the apex angle is increased. First, the primer must always be placed on the side opposite the charge, as the detonation of the primer gives the detonation gases a direction away from itself and toward the side opposite. This follows from the fact that a par- ticle jet does not apread out over so large an area as a continuous one.
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Full text of "Theory and application of shaped charges."

If the gas moves as a coherent mass, then the impressions should be the reverse of what we get. British Library Conference Proceedings Simply select your manager software from the list below and click on download. Technical Report Resource Relation: The use of gless liners permits the almost immediate loading of shot-holes with a secondary explosive. Corps of Engineers lb. Nearly charges were fired in various types of testa.
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The above writers may be overly optimistic about the results obtained in breaking rock in mines with shaped charges. The factor A is a constant equal to 8. It is possible to use shaped charges for driving holes of suitable size in the ground for the sinking of pylons or telephone poles. The charge is capable of cutting 2-in. To a Fig, 16, Photograph of a stack of alternate steal and lead plates after attack by a conical, lined charge. Extensive studies are being done at Carnegie Institute of Tech- nology usin super-high-speed camera techniques involving the electrical Terr cell. For the roost highly brisant explosives, this is approximately
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