In order to do this, efps must be aerodynamically stable so as to strike the target with a small angle of obliquity,and the decay velocity per meter of efp must be smaller. The chemistry of explosives provides an overview of the history of explosives, taking the reader to future developments. Explosively formed projectiles efps are far more lethal than more traditional improvised explosive devices ieds said u. Purchasers can download a free scanned copy of the original. Public domain books are our gateways to the past, representing a wealth of history, culture and knowledge thats often dif. In some cases, the projectile turned in the second wate r segment, resulting in. The explosively formed penetrator efp is also known as the self forging. Appears in 10 books from 19191989 page 5 the rate of flow is defined as the ratio of the distance traveled by the compound to the distance traveled by the developing solvent. They were first developed as oil well perforators by american oil companies in the 1930s, and were deployed as weapons in world war ii. Incidents were concentrated in baghdad and in the districts west of the capital in anbar province. The full text of this article hosted at is unavailable due to technical difficulties. Improvised explosively formed projectile typical of devices deployed in iraq formation of the projectile the heat and shock wave from the detonation of the explosive projects the steel copper. Explosively formed projectile device authorstream presentation. In 1831, william bickford invented the safety fuse, which consisted of yarn woven over gunpowder, then coated in tar to waterproof the fuse.
Learn the works that shaped the minds of great individuals and offer an extraordinary gift of wisdom. Explosively formed penetrators efps have been used in a number of munition systems to defeat armor, masonry and concrete targets. An explosively formed penetrator efp, also known as an explosively formed projectile, a selfforging warhead, or a selfforging fragment, is a special type of shaped charge designed to penetrate armor effectively at standoff. To be even more precise, explosively formed projectiles efp are weapons of war that, before hitting their target, use high explosives to alter. However, there is a lack of publicly available data for projectile impacts with striking velocities that exceed. When the explosive charge is detonated, the blast wave everts and. An explosively formed penetrator, also known as an explosively formed projectile, a selfforging warhead, or a selfforging fragment, is a special type of shaped charge designed to penetrate armor effectively. An explosively formed penetrator efp, also known as an explosively formed projectile, a selfforging warhead, or a selfforging fragment, is a special type of shaped charge designed to penetrate armor effectively at standoff distances. They died just outside their base at camp victory, baghdad at the hands of an explosively formed projectile efp. Impact effects of explosively formed projectiles on normal. Text book on the theory of the motion of projectiles, the history, manufacture, and explosive force of gunpowder, the history of small arms, the. The efp is one of the deadliest weapons encountered during the war. When the explosive charge is detonated, the blast wave everts and elongates the disk into an arrowlike projectile, flying.
Explosively formed penetrators combat tech youtube. Modelling the formation of explosively formed projectiles efp the number of victims of attacks from improvised explosive devices ied, especially from roadside bombs where explosively formed projectiles efp are frequently used, has steeply increased until 2011. Segmented kinetic energy explosively formed penetrator. Explosively formed penetrators for dummies interesting series of infographics about just what is an improvised efp. Before they even knew we were making books, students were asked to be spontaneous and free. These small, square books explode into a series of square and triangular pages when you open them. Modelling the formation of explosively formed projectiles. Each individual liner forms a separate penetrator, so that the liners are. A shaped charge is an explosive charge shaped to focus the effect of the explosives energy. Efps are launched from considerable distance from their targets.
When you want to fire it, you put the vinegar and baking. Numerical study on the optimum design of explosively. How iran used explosively formed projectiles efps to. The disk is concave, dished inward from the edges to the center. Tips edit edit source a decent upgrade to most wands, this modifier will turn your regular dps wand into a digging one albeit a rather noisy one. Aegis specialist risk management introduction efp stands for explosively formed projectile efp ieds are specifically designed to defeat and penetrate the armour of an armoured vehicle efp ieds are the most lethal perincident insurgent weapon in use in iraq. Numerical and experimental study on the formation and dispersion. Revising of navord tr 711, history of navy use of composition a3 and explosive d in projectiles. By johndrake on 6th april 2011 in weekly security update. Explosively formed penetrator military wiki fandom. Such a device has some application in mining, where the release of gas from. Pdf explosively formed projectile softrecovery force. Explosively formed projectile encyclopedia article.
Segmented kinetic energy explosively formed penetrator assembly abstract a segmented, kinetic energy projectile is formed by stacking several liners in a single warhead, for effectively producing a longer penetrator capable of greatly enhancing penetration. Subjected to normal and oblique impact by copper explosively formed projectile which is a kind of easydeformable and soft projectile, ballistic performance of a 40mm thickness steel target has. Prince andrei is fighting at the battle of borodino when a grenade descends, like a. An explosively formed penetrator efp, also known as an explosively formed projectile. Any time of the day sometimes at night arterial routes the triggerman needs to see his target coming so he can arm the efp urban streets are less suitable for attack placement may be interrupted and higher risk of collateral overt military and. Explosively formed projectile efp is a selfforging shape charged structure having very high penetration ability compared to conventional kinetic energy projectile. Each student constructed their own book with decorative papers, cardboard, ribbon, and construction paper. A mechanical explosive is one that depends on a physical reaction, such as overloading a container with compressed air. Overview the past week has seen a slight drop in the number of violent attacks taking place in iraq. An explosively formed penetrator efp, also known as an explosively formed projectile, a selfforging warhead, or a selfforging fragment, is a special type of shaped charge designed to penetrate. The explosively formed penetrator efp is also known as the selfforging. An explosively formed penetrator efp, also known as an explosively formed projectile, a selfforging warhead, or a selfforging fragment, is a special type of shaped charge designed to penetrate armor effectively. There are several formulas for concrete penetration due to projectile impact that are based on empirical data.
Explosively formed projectile military ordnance britannica. Multiple explosively formed penetrator mefp warhead technologies have a very promising option in the category of defeating targets such as lowflying aircraft. This historic book may have numerous typos and missing text. A list of citizendium articles, and planned articles, about explosively formed projectile. Text book on the theory of the motion of projectiles, the. A spell modifier that causes a projectile to explode on contact, destroying terrain quite efficiently and doing a little extra damage to enemies. Various types are used to cut and form metal, initiate nuclear weapons. John mullan on 10 of the best explosions in literature. This course focuses on intellectual history and ethics and. Other articles where explosively formed projectile is discussed. The penetration capability of an efp is strongly dependent on various design parameters.
If one thinks of the hammer blow of an oldtime, brawnyshouldered blacksmith on a glowing piece of iron, one gets a mental image of explosive forming, rather than of a fine machinist using a precise machine to turn screw threads on a part of a gun. Revised and expanded to reflect new developments in the field, this book outlines the basic principles required to understand the chemical processes of explosives. Explosively formed penetrator slow motion testing youtube. Explosively formed penetrators combat tech american heroes channel. The text on the classification of explosive materials contains much data on the physical parameters of primary. Explosively formed projectile softrecovery force analysis. Marks, notations and other marginalia present in the original volume will appear in this. Improvised explosively formed projectile typical of devices deployed in iraq device construction constructed from 6 to 9 inch diameter steel pipe, one end of which is sealed with a welded. As the name suggests, the effect of the explosive charge is to deform a metal plate into a slug or rod. Explosively formed projectiles are taking heavy toll in iraq. Chronological chapters show the evolution of human knowledge and the changing ways in which books are made. Discover delightful childrens books with prime book box, a subscription that delivers new books every 1, 2, or 3 months new customers receive 15% off your.
The turbulence of the projectile traversing the w ater segment of recovery method 1 caused the projectile to tumble. Penetration of explosively formed projectiles sciencedirect. The projectiles measured terminal velocity of 1450 ms was slightly higher than the 70 ms predicted by the cth code and the 40 ms. Explosive formed projectile efp devices springerlink. Baking soda, any substances that react in an expulsion of gas will work and a good strong screwon cap. Formation of explosively formed penetrator with fins and. Gallagher defence research establishment suffield box 4000, medicine hat, alberta, canada, t1a 8k6 abstract results of an experimental and computational investigation on the effects of the shape of. An explosively formed penetrator efp, also known as an explosively formed projectile, a selfforging warhead, or a selfforging fragment, is a special type of shaped charge designed to penetrate armour effectively at standoff distances. Atrain of combustible an explosive elements arranged in the order of decreasing sensitivity, inside of a fuse, projectile, bomb, etc. Explosively formed projectile related articles citizendium. How can getting farther away from earth help us see it more clearly. The ability to quickly estimate the damage that a projectile will do to a structure is highly desired for structures that will be required to resist threats of this nature. As the name suggests, the effect of the explosive charge is to deform a metal plate into a slug or rod shape and accelerate it toward a target. A new breed of weapons employed by insurgents in iraq is causing heavy casualties to u.
The list of acronyms and abbreviations related to efp explosively formed projectiles. See also changes related to explosively formed projectile, or pages that link to explosively formed projectile or to this page or whose text contains explosively formed projectile. He was inspired to invent the fuse after seeing his friend make rope, and it provided a safer means of detonating explosives. Efps were first introduced into iraq in 2005 by iran, utilizing iraqis and smuggling routes they had relationships with dating back to the 1980s. Inbore premature detonation of projectiles in navy large.
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