Penetration equation for shaped charge warhead








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The fuels used in these devices, along with the secondary combustion reactions and long blast impulse, produce similar conditions to those encountered in fuel-air and thermobaric explosives. Other widely used shapes include hemispheres, tulips, trumpets, ellipses , and bi-conics. the various shapes yield jets with different velocity and mass distributions. In a sub-calibrated charge, this part of the device is effectively cut off, resulting in a shorter charge with the same performance. Fundamentals of Shaped Charges softcover edition with corrections ed.

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Penetration Tests Of Heat Warheads

The most common explosive used in high performance anti-armor warheads is HMX octogen , although never in its pure form, as it would be too sensitive. The resulting collision forms and projects a high-velocity jet of metal particles forward along the axis. Munroe "Modern explosives," Scribner's Magazine , vol. Most of the jet travels at hypersonic speed. Some explosives incorporate powdered aluminum to increase their blast and detonation temperature, but this addition generally results in decreased performance of the shaped charge. During World War II , the precision of the charge's construction and its detonation mode were both inferior to modern warheads.

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Review of works on shaped charges

Conversely, if letters were raised in relief above the surface of the explosive, then the letters on the plate would also be raised above its surface. It is well suited for the attack of other less heavily protected armored fighting vehicles AFV and in the breaching of material targets buildings, bunkers, bridge supports, etc. Bimetallic liners, usually zinc-lined copper, can be used. during jet formation the zinc layer vaporizes and a slug is not formed. the disadvantage is an increased cost and dependency of jet formation on the quality of bonding the two layers. Max von Foerster "Experiments with compressed gun cotton," Nostrand's Engineering Magazine , vol.

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Description: However, it was not until that Franz Rudolf Thomanek, a student of physics at Vienna's Technische Hochschule , conceived an anti-tank round that was based on the hollow charge effect. Herrmann Bethmann, , Part I, vol. Please help improve this article by adding citations to reliable sources. The rest of the liner forms a slower-moving slug of material, which, because of its appearance, is sometimes called a "carrot". The key to the effectiveness of the hollow charge is its diameter. Other alloys, binary eutectics e. In a Russian scientist proposed that a shaped charge originally developed for piercing thick steel armor be adapted to the task of accelerating shock waves. The jet cuts any material in its path, to a depth depending on the size and materials used in the charge. German airborne forces in World War Two.
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