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Mk 2 Grenade
The Mk 2 grenade (initially known as the Mk II) is a fragmentation-type anti-personnel hand grenade introduced by the U.S. armed forces in 1918. It was the standard issue anti-personnel grenade used during World War II, and also saw limited service in later conflicts, including the Korean War and Vietnam War. Replacing the failed Mk 1 grenade of 1917, it was standardized in 1920 as the Mk II, and redesignated the Mk 2 on April 2, 1945. The Mk 2 was gradually phased out of service as the M26-series (M26/M61/M57) grenade was introduced during the Korean War. Due to the tremendous quantity manufactured during World War II the Mk 2 was still in limited issue with the US Army and US Marine Corps throughout the 1950s and 1960s. The U.S. Navy was one of the last users of the Mk 2 when it was finally withdrawn from U.S. military service in 1969, replaced with the M33 series (M33/M67). Description The Mk 2 grenade did not widely replace the failed Mk 1 grenade used by the U.S. military ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Users
Ancient Egyptian roles * User (ancient Egyptian official), an ancient Egyptian nomarch (governor) of the Eighth Dynasty * Useramen, an ancient Egyptian vizier also called "User" Other uses * User (computing), a person (or software) using an information system * User (telecommunications), an entity using a telecommunications system * User, a slang term for a freeloader See also * Drug user (other), a person who uses drugs * End user, a user of a commercial product or service {{disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
M67 Grenade
The M67 grenade is a fragmentation hand grenade used by the United States military. The M67 is a further development of the M33 grenade, itself a replacement for the M26-series grenades used during the Korean and Vietnam Wars, and the older Mk 2 "pineapple" grenade used since World War I. Overview The M67 grenade has a spheroidal steel body that contains of composition B explosive. It uses the M213 pyrotechnic delay fuze. The M67 grenade weighs in total and has a safety clip to prevent the safety pin on the grenade from being pulled accidentally. The safety pin prevents the safety lever, or "spoon" on the grenade from moving and releasing the spring-loaded striker which initiates the grenade's fuse assembly. The M67 is typically known as a "baseball" grenade, because it is shaped like a ball that can be easily thrown. According to the FY2021 US Army Justification, the average cost of a single M67 grenade is around 45 US dollars. The M67 can be thrown by the average male so ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Hand Grenades
The military of the United States has used many different types of hand grenades since its foundation. Presented on this page is a basic overview. High explosive, fragmentation, and blast Mk II and Mk IIA1 More commonly known as the ''Pineapple'', the Mk II series (also written Mk 2) was the most common US fragmentation grenade of the Second World War. The Mk II had a grooved exterior originally intended to aid fragmentation of the grenade. However, later studies showed that this design has no effect on fragmentation, though it does provide a non-slip surface that improves grip. The filling was either EC blank fire powder (approx. smokeless small arms powder) or flaked TNT (approx. ); TNT became the common filler from 1942 onwards.Vilinsky, Alan. ''WWII US Army Reenactment Association''Hand Grenades, 19 August 2006. Access date: 18 April 2007. The Mk II was also available in a little-known HE-Blast (better known as ''concussion'') variant and a combined effect HE-Frag variant. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
M1 Grenade Projection Adapter
The M1 grenade projection adapter was an expedient rifle grenade used by the American military in World War II, Korea, and Vietnam. It consisted of an add-on 22 mm stabilizer tube and fins that converted a hand-grenade into a rifle grenade. It supplanted the M17 rifle grenade, and was eventually made obsolete by the 40 mm M79 grenade launcher.Small Arms Survey 2008: Risk and Resilience. Cambridge University Press. 2008. p 24 The M1 grenade projection adapter was designed to easily convert standard Mk 2 hand grenades into rifle grenades. This was done by inserting a Mk 2 grenade into the prongs while a holder on one of the prongs kept the arming lever from releasing. The unit was then placed on the 22 mm M7 grenade launcher attached to the M1 rifle's muzzle. The user then removed the grenade's safety pin and braced the rifle from a standing or kneeling position. The unit was launched by firing a high-powered blank from the rifle. Inertia caused the holder to shear off in fli ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cordite
Cordite is a family of smokeless propellants developed and produced in the United Kingdom since 1889 to replace black powder as a military propellant. Like modern gunpowder, cordite is classified as a low explosive because of its slow burning rates and consequently low brisance. These produce a subsonic deflagration wave rather than the supersonic detonation wave produced by brisants, or high explosives. The hot gases produced by burning gunpowder or cordite generate sufficient pressure to propel a bullet or shell to its target, but not so quickly as to routinely destroy the barrel of the gun. Cordite was used initially in the .303 British, Mark I and II, standard rifle cartridge between 1891 and 1915; shortages of cordite in World War I led to the creation of the "Devil's Porridge" munitions factory (HM Factory, Gretna) on the English-Scottish border, which produced 800 tonnes of cordite per annum. The UK also imported some United States–developed smokeless powders for us ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Smokeless Powder
Finnish smokeless powderSmokeless powder is a type of propellant used in firearms and artillery that produces less smoke and less fouling when fired compared to gunpowder ("black powder"). The combustion products are mainly gaseous, compared to around 55% solid products (mostly potassium carbonate, potassium sulfate, and potassium sulfide) for black powder. In addition, smokeless powder does not leave the thick, heavy fouling of hygroscopic material associated with black powder that causes rusting of the barrel. Despite its name, smokeless powder is not completely free of smoke; while there may be little noticeable smoke from small-arms ammunition, smoke from artillery fire can be substantial. Originally invented in 1884 by Paul Vieille, the most common formulations are based on nitrocellulose, but the term was also used to describe various picrate mixtures with nitrate, chlorate, or dichromate oxidizers during the late 19th century, before the advantages of nitrocellulose beca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amatol
Amatol is a highly explosive material made from a mixture of TNT and ammonium nitrate. The British name originates from the words ammonium and toluene (the precursor of TNT). Similar mixtures (one part dinitronaphthalene and seven parts ammonium nitrate) were known as Schneiderite in France. Amatol was used extensively during World War I and World War II, typically as an explosive in military weapons such as aircraft bombs, shells, depth charges, and naval mines.Brown, G. I. (1998). ''The Big Bang: A History of Explosives''. Sutton Publishing . pp. 158-163. It was eventually replaced with alternative explosives such as Composition B, Torpex, and Tritonal. Invention Following the Shell Crisis of 1915 in which the UK did not have enough ordnance due to a lack of explosives, a team at the Royal Arsenal laboratories produced a mixture of ammonium nitrate and TNT, known as Amatol for short. Special factories were constructed for the manufacture of ammonium nitrate by the double dec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sodium Nitrate
Sodium nitrate is the chemical compound with the formula . This alkali metal nitrate salt is also known as Chile saltpeter (large deposits of which were historically mined in Chile) to distinguish it from ordinary saltpeter, potassium nitrate. The mineral form is also known as nitratine, nitratite or soda niter. Sodium nitrate is a white deliquescent solid very soluble in water. It is a readily available source of the nitrate anion (NO3−), which is useful in several reactions carried out on industrial scales for the production of fertilizers, pyrotechnics, smoke bombs and other explosives, glass and pottery enamels, food preservatives (esp. meats), and solid rocket propellant. It has been mined extensively for these purposes. History The first shipment of saltpeter to Europe arrived in England from Peru in 1820 or 1825, right after that country's independence from Spain, but did not find any buyers and was dumped at sea in order to avoid customs toll.Friedrich Georg Wieck, ' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ammonium Nitrate
Ammonium nitrate is a chemical compound with the chemical formula . It is a white crystalline salt consisting of ions of ammonium and nitrate. It is highly soluble in water and hygroscopic as a solid, although it does not form hydrates. It is predominantly used in agriculture as a high-nitrogen fertilizer.Karl-Heinz Zapp "Ammonium Compounds" in ''Ullmann's Encyclopedia of Industrial Chemistry'' 2012, Wiley-VCH, Weinheim. Global production was estimated at 21.6 million tonnes in 2017. Its other major use is as a component of explosive mixtures used in mining, quarrying, and civil construction. It is the major constituent of ANFO, a popular industrial explosive which accounts for 80% of explosives used in North America; similar formulations have been used in improvised explosive devices. Many countries are phasing out its use in consumer applications due to concerns over its potential for misuse. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nitrostarch
Nitrostarch is the common name of a secondary explosive similar to nitrocellulose. Much like starch, it is made up of two components, nitrated amylose and nitrated amylopectin. Nitrated amylopectin generally has a greater solubility than amylose; however, it is less stable than nitrated amylose. The solubility, detonation velocity, and impact sensitivity depends heavily on the level of nitration. Synthesis Nitrostarch is made by dissolving starch in red fuming nitric acid. It is then precipitated by adding the solution to concentrated sulfuric acid. C6H12O6 + 4NHO3 4C6H6N4O13 + 4H2O Nitrostarch can be stabilized by refluxing it in ethanol to drive off the left over nitric acid. History Nitrostarch was first discovered by French chemist and pharmacist Henri Braconnot. In World War I, it was used as a filler in hand grenades A grenade is an explosive weapon typically thrown by hand (also called hand grenade), but can also refer to a shell (explosive projectile) sho ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trojan Powder Company
The Trojan Powder Company was an American manufacturer of explosives founded in 1904 that made nitro-starch powder. It had a manufacturing complex in Allentown, Pennsylvania, and another facility at Roberts Landing near San Lorenzo, California. The company thrived during World War I (1914–18), continued research and development in the interwar-period, and during World War II operated a large facility in Sandusky, Ohio, under contract to the army. After the war, production scaled back. A facility in Oregon was sold for use by the Trojan Nuclear Power Plant. In 1967 Trojan Powders became a division of Commercial Solvents Corporation (CSC). It was later acquired by the Ensign-Bickford Company. Background The chemists F.B. Holmes and Jesse B. Bronstein discovered how to produce a stable nitrostarch while working at DuPont's Eastern Laboratories. Between 1905 and 1908 Holmes obtained various patents related to stabilization of nitrostarch powders. Because the powder did not con ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Concussion Grenade
A grenade is an explosive weapon typically thrown by hand (also called hand grenade), but can also refer to a Shell (projectile), shell (explosive projectile) shot from the muzzle of a rifle (as a rifle grenade) or a grenade launcher. A modern hand grenade generally consists of an explosive charge ("filler"), a detonator mechanism, an internal Firing pin, striker to trigger the detonator, and a safety lever secured by a split pin, cotter pin. The user removes the safety pin before throwing, and once the grenade leaves the hand the safety lever gets released, allowing the striker to trigger a Percussion cap, primer that ignites a fuze (sometimes called the delay element), which burns down to the detonator and explodes the main charge. Grenades work by dispersing fragments (fragmentation grenades), shockwaves (High explosive, high-explosive, Anti-tank grenade, anti-tank and stun grenades), chemical aerosols (Smoke grenade, smoke and gas grenades) or fire (incendiary grenades). Fr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
