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Caseless Ammunition
Caseless ammunition (CL), or caseless cartridge, is a configuration of Cartridge (firearms), weapon-cartridge that eliminates the cartridge case that typically holds the Percussion cap, primer, propellant and projectile together as a unit. Instead, the propellant and primer are fitted to the projectile in another way so that a cartridge case is not needed, for example inside or outside the projectile depending on configuration. Caseless ammunition is an attempt to reduce the weight and cost of ammunition by dispensing with the case, which is typically precision made of brass or steel, as well as to simplify the operation of repeating guns by eliminating the need to extract and eject the empty case after firing. Its acceptance has been hampered by problems with production expenses, heat sensitivity, sealing, and fragility. Its use to date has been mainly limited to prototypes and low-powered guns, with some exceptions. Internal-propellant caseless ammunition Description Olde ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Internal Propellant Caseless Ammunition
Caseless ammunition (CL), or caseless cartridge, is a configuration of weapon-cartridge that eliminates the cartridge case that typically holds the primer, propellant and projectile together as a unit. Instead, the propellant and primer are fitted to the projectile in another way so that a cartridge case is not needed, for example inside or outside the projectile depending on configuration. Caseless ammunition is an attempt to reduce the weight and cost of ammunition by dispensing with the case, which is typically precision made of brass or steel, as well as to simplify the operation of repeating guns by eliminating the need to extract and eject the empty case after firing. Its acceptance has been hampered by problems with production expenses, heat sensitivity, sealing, and fragility. Its use to date has been mainly limited to prototypes and low-powered guns, with some exceptions. Internal-propellant caseless ammunition Description Older caseless ammunition typically uses ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ballistics
Ballistics is the field of mechanics concerned with the launching, flight behaviour and impact effects of projectiles, especially weapon munitions such as bullets, unguided bombs, rockets and the like; the science or art of designing and accelerating projectiles so as to achieve a desired performance. A ballistic body is a free-moving body with momentum, which can be subject to forces such as those exerted by pressurized gases from a gun barrel or a propelling nozzle, normal force by rifling, and gravity and air drag during flight. A ballistic missile is a missile that is missile guidance, guided only during the relatively brief initial phase of powered flight, with the trajectory subsequently governed by the laws of classical mechanics, in contrast to (for example) a cruise missile, which is aerodynamics, aerodynamically guided in powered flight like a fixed-wing aircraft. History and prehistory The earliest known ballistic projectiles were stones, spears, and the throwing s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ho-301 Cannon
The Ho-301 was a Japanese 40 millimeter caliber autocannon that saw limited use during World War II, on Japanese Army Nakajima Ki-44 and Kawasaki Ki-45 KAI aircraft. It was unusual in using caseless ammunition. Although the effective range of the cannon was only 150 meters (490 ft), the Ho-301 was light and rapid-firing for its caliber. The caseless design revolved around a specially designed projectile, that was in effect a small rocket. The round used an internal propellant chamber at the rear of the projectile containing a ten gram silk bag filled with smokeless powder. Drilled into the base plate of the round are twelve 3.8 millimeter diameter exhaust holes. The propellant chamber is sealed by a thin aluminum sealing cup, which covers the exhaust holes. When the primer is struck, the bag of propellant ignites, and the pressure rises until the aluminum cup bursts, allowing the exhaust gas to rush through the exhaust holes pushing the projectile forward. The propellant was ex ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Autocannon
An autocannon, automatic cannon or machine cannon is a automatic firearm, fully automatic gun that is capable of rapid-firing large-caliber ( or more) armour-piercing, explosive or incendiary ammunition, incendiary shell (projectile), shells, as opposed to the smaller-caliber kinetic projectiles (bullets) fired by a machine gun. Autocannons have a longer effective range and greater terminal ballistics, terminal performance than machine guns, due to the use of larger/heavier munitions (most often in the range of , but bigger calibers also exist), but are usually smaller than tank guns, howitzers, field guns, or other artillery. When used on its own, the word "autocannon" typically indicates a non-rotary weapon with a single gun barrel, barrel. When multiple rotating barrels are involved, such a weapon is referred to as a "rotary autocannon" or "rotary cannon". If it uses a single barrel with a rotating cylinder with multiple chambers, it is known as a "revolver autocannon" or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rheinmetall Rh-120
The Rheinmetall Rh-120 is a 120 mm smoothbore tank gun designed and produced in former West Germany by the Rheinmetall Waffe Munition GmbH company. It was developed in response to Soviet advances in armour technology and development of new armoured threats. Production began in 1974, with the first version of the gun, known as the ''L/44'' as it was 44 calibres long, used on the German Leopard 2 tank and soon produced under license for the American M1A1 Abrams and other tanks. The L/44 gun has a length of , and the gun system weighs approximately . By 1990, the L/44 was not considered powerful enough to defeat future Soviet armour, which stimulated an effort by Rheinmetall to develop a better main armament. This first involved a tank gun named ''Neue Panzerkanone 140'' ('new tank gun 140'), but later turned into a compromise which led to the development of an advanced 120 mm gun, the L/55, based on the same internal geometry as the L/44 and installed in the same breech ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
MK 115
The MK 115 (German: ''Maschinenkanone 115''—"machine cannon 115") was an autocannon developed in Germany in late World War II by Rheinmetall-Borsig for use in aircraft. It was an unusual development in that although it employed a locked breech, it also used a funnel to allow some of the propellant gases to escape out the rear in order to reduce recoil when firing, essentially being an automatic recoilless rifle. The MK 115 was chambered for a 5.5 cm round (in common with a few other late-war German designs), but used a partially combustible cartridge, leaving only the base of the cartridge to eject. The MK 115 was a gas-operated, belt-fed weapon, and its breechblock used a swinging lock mechanism. It had a rifled barrel with an 8°30′ twist. A single prototype in the late stages of development was captured by the Western allies.George Chinn 1951, The Machine Gun: Development During World War II and Korean Conflict by the United States and their Allies of Full Automatic Machi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Guns Magazine
''Guns'' is a magazine dedicated to firearms, hunting, competition shooting, reloading, and other shooting-related activities in the United States. First published in 1955, it is one of the oldest periodicals about firearms in continuous publication in the United States The magazine primarily offers reviews on guns, ammunition, and shooting gear; as well as gunsmithing tips, historical articles, gun collecting, self-defense, and alerts on gun rights The right to keep and bear arms (often referred to as the right to bear arms) is a legal right for people to possess weapons (arms) for the preservation of life, liberty, and property. The purpose of gun rights is for self-defense, as well as .... In addition to those departments, each issue contains a few featured articles and personality profiles of people in the firearms industry as well as press releases of new products. References {{Reflist External links Official website Monthly magazines published in the United State ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
World War II
World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the world's countries participated, with many nations mobilising all resources in pursuit of total war. Tanks in World War II, Tanks and Air warfare of World War II, aircraft played major roles, enabling the strategic bombing of cities and delivery of the Atomic bombings of Hiroshima and Nagasaki, first and only nuclear weapons ever used in war. World War II is the List of wars by death toll, deadliest conflict in history, causing World War II casualties, the death of 70 to 85 million people, more than half of whom were civilians. Millions died in genocides, including the Holocaust, and by massacres, starvation, and disease. After the Allied victory, Allied-occupied Germany, Germany, Allied-occupied Austria, Austria, Occupation of Japan, Japan, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Volcanic Repeating Arms
The Volcanic Repeating Arms Company was an American company formed in 1855 by partners Horace Smith and Daniel B. Wesson to develop Walter Hunt's Rocket Ball ammunition and lever action mechanism. Volcanic made an improved version of the Rocket Ball ammunition, and a carbine and pistol version of the lever action gun to fire it. While the Volcanic Repeating Arms Company was short-lived, its descendants, Winchester Repeating Arms Company and Smith & Wesson became major firearms manufactures. History The original 1848 Volcanic Repeating Rifle design by Hunt was revolutionary, introducing an early iteration of the lever action repeating mechanism and the tubular magazine still common today. However, Hunt's design was far from perfect, and only a couple of prototypes were developed; the only one known is currently in the Firearms Museum in Cody, Wyoming. Lewis Jennings patented an improved version of Hunt's design in 1849, and versions of the Jenning's patent design were built ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rocket Ball
The Rocket Ball was one of the earliest forms of metallic cartridge for firearms, containing bullet and powder in a single, metal-cased unit. Construction The Rocket Ball, patented in 1848 by Walter Hunt, consisted of a lead bullet with a deep hollow in the rear, running a majority of the length of the cartridge. The hollow, like that of the Minie ball, served to seal the bullet into the bore, but Rocket Ball put the cavity to further use. By packing the deep cavity with powder, and sealing it with a cap with a small hole in the rear for ignition, the Rocket Ball replaced the earlier paper cartridge with a durable package capable of being fed from a magazine. The cap was blown out of the bore upon firing. The Rocket Ball was used in magazine fed lever action guns, allowing the first easily manufactured repeating single chamber firearms. Use While the Rocket Ball provided the means of making practical repeating firearms, it was not an ideal solution. The limited volume ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Walter Hunt (inventor)
Walter Hunt (July 29, 1796 – June 8, 1859) was an Americans, American Mechanical engineering, mechanical engineer. Through the course of his work he became known for being a prolific Invention, inventor. He first became involved with mechanical innovations in a linseed producing community in New York (state), New York state that had flax mills. While in New York City to promote his inventions he got involved in inventing the streetcar gong that was used throughout the United States. This then led him to invent other useful items like the safety pin and sewing machine. He invented the precursor to the repeating rifle and fountain pen. About two dozen of his inventions are used today in basically the same form as he had Patent, patented them. In spite of his many useful innovative creations he never became wealthy since he sold off most of his patent rights to others at low prices with no future royalties. Others made millions of dollars from his safety pin device. Early life an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nozzle
A nozzle is a device designed to control the direction or characteristics of a fluid flow (specially to increase velocity) as it exits (or enters) an enclosed chamber or pipe (material), pipe. A nozzle is often a pipe or tube of varying cross sectional area, and it can be used to direct or modify the flow of a fluid (liquid or gas). Nozzles are frequently used to control the rate of flow, speed, direction, mass, shape, and/or the pressure of the stream that emerges from them. In a nozzle, the velocity of fluid increases at the expense of its pressure energy. Types Jet A gas jet, fluid jet, or hydro jet is a nozzle intended to eject gas or fluid in a coherent stream into a surrounding medium. Gas jets are commonly found in gas stoves, ovens, or barbecues. Gas jets were commonly used for Gas lighting, light before the development of electric light. Other types of fluid jets are found in carburetors, where smooth calibrated orifices are used to regulate the flow of gasoline, fuel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
