Formation of explosively formed penetrator with fins and. Penetrator fins is the culmination of combining composite fabrication professionals with some of australias leading spear fishermen. A shaped charge is a concave metal hemisphere or cone known as a liner backed by a high explosive, all in. May 22, 2016 its easy to confuse the two, but the traditional shaped charge and the efp are two different animals, even if they appear superficially similar. You must there are over 200,000 words in our free online dictionary, but you are looking for one thats only in the merriamwebster unabridged dictionary start your free trial today and get unlimited access to americas largest dictionary, with. An explosively formed penetrator efp, also known as an explosively formed projectile, a selfforging warhead, or a selfforging fragment, is a special type. A high explosive behind a shallow cone of maleable metal usually copper. Hydrocode and microstructural analysis of explosively formed. The second is that the weapon was a bunkerbusting conventional uranium penetrator weapon employing enriched uranium rather than depleted uranium. Oct 18, 20 the single most lethal weapon american forces faced in iraq was the explosively formed penetrator, or e. More than 250,000 words that arent in our free dictionary. When the charge detonates, the plate is blasted into a streamlined, aerodynamic slug.
Segmented kinetic energy explosively formed penetrator assembly. Formation of explosively formed penetrator with fins and its. A comparison of residual microstructural features in tantalum, iron, and copper explosivelyformed projectiles efps utilizing optical and transmission electron microscopy tem was undertaken and these observations correlated with corresponding microhardness maps measured on the recovered efp half sections. Jan 20, 2016 an explosively formed penetrator starts out as a shallow metal plate or lens, backed by an explosive charge. Analytical and numerical method of velocity fields for the. Oct 12, 2017 a lethal bomb generally associated with iran and its proxies has reemerged in iraq after a six year hiatus, killing an american soldier. Numerical and experimental study on the formation and dispersion.
Levi has sought for years to hold another party responsible. 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. They are also used extensively in the oil and gas industry 1. The focus of american concern is known as an explosively formed penetrator, a particularly deadly type of roadside bomb being used by shiite. The washington post first reported that an explosively formed penetrator efp was used in a roadside attack that occurred in salah addin province on oct. 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. Explosively formed penetrator slow motion testing youtube.
He and dozens of other soldiers injured during the iraq war, as. Each individual liner forms a separate penetrator, so that the liners are. The effects select physical parameters have on an explosively. Warhead development commonly uses advanced computer modeling which can take extreme amounts. Penetrator definition of penetrator by merriamwebster. Explosively formed penetrator efp and fragmenting warhead. Compared with conventional explosively formed penetrator efp, mefp provides a warhead that can produce a focused cluster of numerous penetrators that. Feb 10, 2007 the focus of american concern is known as an explosively formed penetrator, a particularly deadly type of roadside bomb being used by shiite groups in attacks on american troops in iraq. Explosively formed projectiles efp have been used to defeat armored vehicles for more than 30 years. Explosively formed penetrators for dummies interesting series of infographics about just what is an improvised efp.
Army armament research, development and engineering center, picatinny arsenal, n. Aug 30, 20 explosively formed penetrators for dummies interesting series of infographics about just what is an improvised efp. Certain copper alloys were used as well, and analysis of their construction was used to pinpoint the manufacturers. 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. Though it was fired by shiite militia members in iraq, mr. Method and apparatus for providing an explosively formed penetrator having fins abstract an improved explosively formed penetrator and a method of manufacturing same for forming an elongated rodlike penetrator having aerodynamically stabilizing fins, but without requiring any exotic production processes for shaping or modifying the. Mefp stands for multiple explosively formed penetrator warhead. Library search on penetrators in erw pipes number of. Apr 12, 2012 engineers work to find a solution to battle against insurgents efps. Single copper plate with surface structural differences usually dimples or creases that causes it to produce multiple small jets. 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. Formation of explosively formed penetrator with fins. Penetrator definition of penetrator by medical dictionary. Linear explosively formed penetrator lefp is an optimal combination of linear cutting sword and conical shaped charge but is completely different with those two above.
Those bombs, known as explosively formed penetrators, or efps, killed 196 americans and wounded 861 from 2005 to 2011, according to a u. The effects select physical parameters have on an explosively formed projectiles performance by phillip russell mulligan a thesis presented to the faculty of the graduate school of the missouri university of science and technology in partial fulfillment of the requirements for the degree master of science in explosives engineering 2011. The projectiles sensor detects a vehicles infrared signature, and an explosively formed penetrator fires at the heat source. A lethal bomb generally associated with iran and its proxies has reemerged in iraq after a six year hiatus, killing an american soldier. Multiple explosively formed penetrator how is multiple explosively formed penetrator abbreviated. Iranianlinked bomb kills american soldier in iraq fdds. Scalable parallel computation of explosively formed penetrators. The efp warhead was derived from the misznayschardin device, which consists of a right circular cylinder of explosive, with a shallow cavity in one end that is fitted with a thin metallic liner. Method and apparatus for providing an explosively formed. Numerical results had successfully described the formation process and distribution pattern of mefp. Controlled explosively formed penetrator abstract a method and apparatus for controlling the final shape of an explosively formed penetrator, in which a liner is explosively accelerated to high velocity to impact upon a mandrel and form a penetrator whose final shape, surface and mass distributions about its. Efp explosive force penetrator us dod acronymfinder.
As the name suggests, the effect of the explosive charge is to deform a metal plate into a slug or rod. In order to do this, an efp must be aerodynamically stable so as to strike the target at a small angle of obliquity, and the decay velocity per meter of efp must be smaller at extended standoff. The now liquid copper forms a slug of molten metal flying towards the target at about 24,000 feet per second. Mefp multiple explosively formed penetrator warhead. The consortium is formed of experienced space instrument and system providers allied with the defence sector which has extensive experience in. How is explosive force penetrator us dod abbreviated. Sep 25, 2003 0020 referring now to the drawings, simultaneous reference will be made to figs. In an effort to find an alternative to tantalum for use in multiple explosively formed penetrator mefp liners, the u. Efp abbreviation stands for explosively formed penetrators. Explosively formed penetrator how is explosively formed. The high velocity penetrators formed from mefp warhead can effec. An object that penetrates you all know what it will penetrate.
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. Multiple explosively formed penetrator listed as mefp. Explosively formed penetrator wikipedia, the free encyclopedia. Single copper plate designed for armor penetration, produces a long jet of copper that breaks up on impact with target. You must there are over 200,000 words in our free online dictionary, but you are looking for one thats only in the merriamwebster unabridged dictionary.
A photograph of the explosion of the first bomb shows large clouds of black smoke that might result from burning uranium. Explosively formed penetrator formation simulation youtube. Multiple explosively formed penetrator how is multiple. A group of penetrators consisting of a central penetrator surrounded by 6 penetrators is formed during the formation. The simulation of the explosively formed penetrator efp is performed by modeling the complete process including the detonation of the explosive and the interaction of the explosive with the efp. Hydrocode and microstructural analysis of explosively.
Enriched uranium is produced from natural uranium ore and is used as fuel for nuclear reactors. Sep 16, 2003 referring now to the drawings, simultaneous reference will be made to figs. 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. Explosively formed penetrators combat tech youtube. Multiple explosively formed penetrator mefp warhead. The ultimate goal of weapon system employing an explosively formed penetrator efp is to defeat a target at the longest standoff. Pdf formation of explosively formed penetrator with fins. Using nickeltungsten alloys to produce multiple explosively.
The single most lethal weapon american forces faced in iraq was the explosively formed penetrator, or e. The most lethal weapon americans faced in iraq the new york. An explosively formed penetrator starts out as a shallow metal plate or lens, backed by an explosive charge. A linear explosively formed penetrator lefp, a counterpart to a linear shaped charge, is capable of projecting a massive wide metal blade instead of a narrow jet or compact slug.
What is the abbreviation for explosively formed penetrators. In may 2008 the uk penetrator consortium demonstrated a first successful full scale impact trial after a period of only 9 months technology development. When the high explosive detonates, the copper cone is instantly liquified. Request pdf hydrocode and microstructural analysis of explosively formed penetrators a comparison of residual microstructural features in tantalum, iron, and copper explosivelyformed. Initiating manner of lefp is one of the most important factors that can affect its performance obviously. Numerical simulation of linear explosive formed penetrator by endpoint initiating manner p. Previously, efp warheads were designed to produce a single rod shaped or ball shaped penetrator for deep armor penetration. Its easy to confuse the two, but the traditional shaped charge and the efp are two different animals, even if they appear superficially similar. Library search on penetrators in erw pipes number of references.
Formation mechanism of linear explosive formed penetrator by. Numerical simulation of linear explosive formed penetrator by. Consider that is an mefp, meaning it tends to launch a large number of smaller projectiles as opposed to a single powerful slug which makes sense when you are targeting more lightly armored vehicles. 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. Sep 03, 2015 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. Referring now to the drawings, simultaneous reference will be made to figs. How is multiple explosively formed penetrator warhead abbreviated. Segmented kinetic energy explosively formed penetrator. Explosively formed penetrator efp is a kind of shaped charge structure. Det developed and built such a device for rapidly cutting through metal hedgehog obstacles, as might be encountered on a beach protected from amphibious assault. However, if the object is too large, it can not be considered a penetrator, since penetration achieved with such object will be painful.
Engineers work to find a solution to battle against insurgents efps. An explosively formed penetrator efp, also known as an explosively formed projectile. Multiple explosively formed penetrator test in slow. The explosive formed penetrator efp shape charge is becoming an improvised explosive device ied that poses an extremely serious threat to armored. Explosively formed penetrator efp warhead explosively forged penetrator efp warhead. By clicking on continue you confirm that you are 18 years and over. Efp is defined as explosive force penetrator us dod rarely. Larry gray the founder of penetrator fins has been involved in the composites industry for over 30 years, specialising in providing high quality advanced composite manufacturing to the marine industry. Oct 12, 2017 lethal roadside bomb that killed scores of u. Mefp is defined as multiple explosively formed penetrator warhead somewhat frequently.
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