The optimum effective range is 50 m (55 yd), at which the optimal balance is achieved between lethality and area coverage, with a hit probability of 30% on a man-sized target.[4]. The shape was developed through experimentation to deliver the optimum distribution of fragments at 50 m (Bad rounding hereScript error yd) range. The initial versions of the mine used two pairs of wire legs produced from number 9 wire. On both sides of the sight are fuse wells set at 45 degrees. The explosion is primarily directed forwards, inflicting damage in a 180 degree arc in front of the mine, but the explosion also deals full damage to players in a circle with a 1 meter radius around the Claymore. The mine was barely more than a prototype and was not considered a "reliable casualty producer"; like the Phoenix it had an effective range of only 90 feet (27 m). [3] A simple open sight on the top surface allows for aiming the mine. Test your knowledge on this just for fun quiz and compare your score to others. Secondly, the blast "leaked" between the balls, reducing their velocity. He worked with Don Kennedy and the two men submitted a 30-page proposal in response to Picatinny's RFP. A bandolier is issued for the carrying of M18 Claymores and also contains an instruction sheet. The Claymore fires steel balls, out to about 100 m (110 yd) within a 60° arc in front of the device. 9. When a sheet of explosive detonates in contact with a heavy backing surface (for example, a metal plate), the resulting blast is primarily directed away from the surface in a single direction. Controlled Mode (also known as Command Detonation) The mine is detonated by the operator as the forward edge of the enemy approaches a point within the killing zone (20 to 30 meters (65 to 100 ft)) where maximum casualties can be inflicted. a. The claymore mine training consisted of emplacing a claymore, inserting the blasting cap and detonating the mine from a short distance away. After a number of experiments, the engineers settled on Devcon-S steel-filled epoxy to hold the balls in place. In comparison, the other anti-personnel weapons of the Vietnam War available to the US Army was the M67 fragmentation hand grenade, this having a kill-zone of up to 16.5 feet (though lobbed distance was limited to the thrower's arm ability), and the M79 single-shot grenade launcher, a pinpointed weapon sending a 40mm high-explosive (HE) grenade upwards of 1,149 feet down range - though these were similarly limited with a kill range of about 20 feet. Initially, detonation of early M18 Claymore systems was by way of an electrically-actuated firing device issued with each mine. Quiz by Jeffcotton Chile; China; Finland; Hungary; Italy; Japan; Malaysia; Pakistan; Philippines; Poland; Russia; Serbia; South Africa; South Korea; Sweden; Turkey; United Kingdom; United States; Vietnam; Yugoslavia, M18 "Claymore" - US Base Series Designation. This was determined experimentally by Bledsoe, through a large number of test firings. The M18a1 claymore mine is based around a 1.5lb slab of plastic explosives packed behind 700 steel balls. The mine contains 700 steel spheres (10.5 grains) and 1-1/2 pound layer of composition C-4 explosive and is initiated by a No. You set it … Type of Directional fragmentation anti-personnel mine. It does not contain an explosive or pyrotechnic filler of any kind. Please direct all other inquiries to militaryfactory AT gmail.com. One of the first improvements was to replace the steel cubes with 7⁄32-inch (5.6 mm) hardened 52100 alloy ball bearings. The Arsenal bid it out to various component suppliers. Unlike a conventional land mine, the Claymore is command-detonated and directional, meaning it is fired by remote-control and shoots a pattern of metal balls into the kill zone like a shotgun. The M18A1 Claymore mine has a horizontally convex green plastic case (inert training versions are blue). Later when production was ramped up, the design was changed to flat steel scissor, folding-type legs. Internally the mine consisted of a layer of 12-ounce (340 g) of C-3 explosive (the forerunner of C-4 explosive) in front of which was laid an array of 0.25-inch (6.4 mm) steel cubes. [7] Given the requirements of weight and fragment density, approximately 700 fragments were needed, with the ability to aim the mine with an accuracy of around two feet (0.61 m) at the center of the target zone. [1], Minor modifications were made to the mine during its service. There are field-expedient methods of detonating the mine by tripwire, or by a timer, but these are rarely used. Two pairs of scissor legs attached to the bottom support the mine and allow it to be aimed vertically. It is packed in a Claymore bag with inert M10 simulated detonator cap wire, an M57 "clacker" firing control, and an M40 circuit test kit. PADMINE is an anti-personnel directional fragmentation mine produced by the United Kingdom, similar to the Claymore in cosmetic design with two swivelling legs, inserted into soft-ground. It is also used against unarmored vehicles. A claymore mine is command detonated only, meaning the firing device must be manually triggered. Some inert mines were green with a light blue band. Since the Claymore has a curved rectangular shape, once fired, plastic explosive hurls 700 steel balls out in a 60° radius. In the Vietnam War, the mine was used by the United States Army with effect against NVA (North Vietnamese Army) and VC (Viet Cong) forces along commonly used jungle trails during ambush missions. MacLeod designed a weapon called the T-48; broadly similar to the final M18A1, it lacked a number of the design details that made the M18A1 effective. 4 x 6″ spike legs are attached to the bottom of the M18 Claymore system to allow the mine to be easily secured into soft grounds. The shape was developed through experimentation to deliver the optimum distribution of fragments at 50 m (55 yd) range. The mine was planted in the ground, using its three sharp legs, and aimed in the direction of enemy approach; at that point, it was fitted with an electrical blasting cap. The M57 firing device (colloquially referred to as the "clacker") is included with each mine. The M57 device (known as a "clacker") was held in the hand and featured a trigger that was squeezed a number of times by the Claymore operator to convert mechanical energy into electrical energy using an armature and magnets. Its lethality out to 50 metres arrives in the form of 650 steel balls and it is activated by remote control or trip wire. The M68 kit is designed to familiarize personnel with the placement and arming of a real M18 directional mine. When the mine explodes the balls fly out in a cone pattern, devastating anything in range. He named his antipersonnel mine the claymore, after the two-handed sword wielded by his Scottish ancestors. The 100-foot (30 m) M4 electric firing wire on a green plastic spool is provided in each bandolier. Later a Philadelphia company, Molded Plastic Insulation Company, took over the manufacture of the firing device for the first large-scale production run producing a plastic device.[1]. In total the mine weighed about 2.43-pound (1.10 kg), and could be fitted with an optional peep sight for aiming. Graphic from the firing wire to the bottom support the mine. [ 1 ], a,! Or by a timer team sent the project to work at the end of the sight are fuse wells at... 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