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combustion light gas gun

combustion light gas gun

A gas ignition gun, also known as combustion light-gas gun, utilizes the explosive force of low molecular-weight combustible gases, such as hydrogen mixed with oxygen, as propellant.When the gases are ignited, they burn, expand and propel the projectile out of the barrel with higher efficiency relative to solid propellant, allowing it to achieve greater ranges and muzzle velocities. The Combustion Light Gas Gun or CLGG has been investigated for over ten years. Firearm muzzle velocities range from approximately 120 m/s (390 ft/s) to 370 m/s (1,200 ft/s) in black powder muskets, to more than 1,200 m/s (3,900 ft/s) in modern rifles with high-velocity cartridges such as the .220 Swift and .204 Ruger, all the way to 1,700 m/s (5,600 ft/s) for tank guns firing kinetic energy penetrator ammunition. Why are my soldiers weapons so ineffective, or the rarity of one-hit kills. In artillery, caliber or calibre is the internal diameter of a gun barrel, or by extension a relative measure of the length. UTRON has built and tested 45mm and 155mm combustion light-gas guns. 1.0 caliber, .50 caliber, and .17 caliber two stage light gas guns are housed in the Remote Hypervelocity Test Laboratory. 2 + O. 2 2H. To simulate orbital debris impacts on spacecraft, NASA launches projectiles through light-gas guns at speeds up to 8,500 m/s (28,000 ft/s). In order to better understand the interior ballistic process of CLGG, an multidimensional combustion and … The Combustion Light Gas Gun, or CLGG, has been investigated for over ten years. Two-stage light gas gun design The high pressure second section is 3.8 m long with an internal bore of 42 mm, and contains a light gas, such as hydrogen, sealed at the powder end by a disposable piston and within the central breach by a burst disc (petal valve), separating the high-pressure section and the launch tube. 2H. Mathematical equations of motion are used to analyze projectile trajectories. The railgun uses a pair of parallel conductors (rails), along which a sliding armature is accelerated by the electromagnetic effects of a current that flows down one rail, into the armature and then back along the other rail. 0 - Classic Hydrogen Reaction. The gun consists of three tubes: the expansion, pump, and launch tubes. The high-low system allows the weight of the weapon and its ammunition to be significantly reduced. Therefore, hydrogen is typically the first choice; however, other propellants like methane can be used. Electrothermal-chemical (ETC) technology is an attempt to increase accuracy and muzzle energy of future tank, artillery, and close-in weapon system guns by improving the predictability and rate of expansion of propellants inside the barrel. The research and development firm UTRON, Inc is experimenting with a combustion light-gas gun design for field use. Some basic materials research relies on projectile impact to create high pressure: such systems are capable of forcing liquid hydrogen into a metallic state. 2 + xH. The size and shape of the muzzle flash is dependent on the combustion energy of propellant being used, the amount of combustible ejecta remaining, and any devices attached to the muzzle. Higher velocity weapons, like the CLGG, face these engineering challenges as they edge the boundaries of firing accelerations higher. Muzzle velocity is the speed of a projectile with respect to the muzzle at the moment it leaves the end of a gun's barrel. These guns use oxygen-hydrogen or hydrocarbon mixtures to propell their projectiles. Combustion light gas gun technology is one of the areas being explored in an attempt to achieve higher velocities from artillery to gain greater range. A projectile is any object thrown by the exertion of a force. This reduction in diameter acts as a lever, increasing the speed while decreasing the force. A light-gas gun works on the same principle as a spring piston airgun. CLGGs' gaseous propellants are able to increase the propellant's specific impulse. In aerodynamics, velocities above Mach 5 … [1] The corporation claims to have a system ready for testing as a potential long-range naval fire support weapon for emerging ships, such as the Zumwalt-class destroyer. 1. “Lightening Strike” – An Indirect Fire Concept Utilizing Combustion Light Gas Gun (CLGG) Technology to Achieve Extreme Ranges. It is a highly specialized gun designed to generate extremely high velocities. An example of the CLGG’s potential can be seen in Table 1 which shows predicted performance for CLGG based launchers as a function of tube length. Modern tank guns are large-caliber high-velocity guns, capable of firing kinetic energy penetrators, high explosive anti-tank rounds, and in some cases guided missiles. The Combustion Light Gas Gun, or CLGG, has been investigated for over ten years. During this time, the research has shown that the technology provides a minimum of 30 more muzzle energy than advanced solid propellent guns which translates to significant advantages in range andor throw weight. It enables a much larger projectile to be launched without the heavy equipment typically required for large caliber weapons. Ballistics is the field of mechanics concerned with the launching, flight behavior and impact effects of projectiles, especially ranged weapon munitions such as bullets, unguided bombs, rockets or the like; the science or art of designing and accelerating projectiles so as to achieve a desired performance. It has a far more efficient use of the propellant, unlike earlier recoilless weapons, where most of the propellant is expended to the rear of the weapon to counter the recoil of the projectile being fired. The main problem with a light-gas gun is that you need a supply of both gunpowder to drive the piston and the light gas (hydrogen or helium) to … The wiki article says that muzzle velocities of 3 km/s are achivable, but that they have a poor accuracy at artillery ranges. Combustion Light Gas Gun LIU Ning, ZHANG Xiang-yan (School of Mechanical engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China) Abstract: The combustion light gas gun (CLGG) is the launching system which uses low As shown in Figure 5, the CLGG consists, in its simplest configuration, of a chamber sealed with a diaphragm and filled with a combustible mix of light gaseous propellants such as methane, hydrogen, oxygen, and helium, in various combinations. An experimental light-gas gun should operate in a similar way to a conventional gun with powder. In the anti-tank role, as tank armor improved during World War II newer designs began to use a smaller but dense penetrating body within a larger shell. A railgun is a device, typically designed as a weapon, that uses electromagnetic force to launch high velocity projectiles. The \"heat of combustion\" of a fuelis a measure of the amount of energyreleased when the fuel isburned. A propellant or propellent is a chemical substance used in the production of energy or pressurized gas that is subsequently used to create movement of a fluid or to generate propulsion of a vehicle, projectile, or other object. The combustion light gas gun (CLGG) is an advanced launching system with potentially extremely high muzzle velocity, in which the projectile is propelled by the combustion expansion of a low molecular weight combustible gas mixture [ 1 ]. A combustion light gas gun (CLGG) uses low molecular weight gas, such as hydrogen mixed with oxygen, as propellant. The expansion tube contains a close-fitting expansion piston that is propelled by an explosive charge. While this technology does appear to provide higher velocities, the main drawback with gaseous or liquid propellants for gun systems is the difficulty in getting uniform and predictable ignition and muzzle velocities. The initial Range G configuration was a 2.5-inch bore, two-stage, light-gas gun firing into a 10-foot-diameter test tank 1,000-feet in length. Not Your Father’s Light Gas Gun Photo of LLNL Light Gas Gun Solid Propellant Piston Projectile H 2 Up to 400 calibers Hydrogen/Oxygen Projectile ~ 38 to 70 calibers Combustion Light Gas Gun “The lighter propellant gases chase the projectile down-bore more efficiently!” Therefore, hydrogen is typically the first choice; however, other propellants like methane can be used. CLGG’s gaseous propellants are able to increase the propellant's specific impulse. Muzzle flash is the visible light of a muzzle blast, which is caused by the sudden release and expansion of high-temperature, high-pressure gases from the muzzle of a firearm. Another issue is the survival of projectile payloads at higher accelerations. From the 1860s to 1950s, a major application of armor-piercing projectiles was to defeat the thick armor carried on many warships. In a light-gas gun, the piston is powered by a chemical reaction (usually gunpowder), a… The light-gas gun is an apparatus for physics experiments, a highly specialized gun designed to generate very high velocities. What caught my attention however are combustion light-gas guns. Performance of the launcher is summarized as muzzle velocity as a function of maximum chamber pressure for various projectile weights. Although any object in motion through space may be called a projectile, the term more commonly refers to a ranged weapon. Another issue is the survival of projectile payloads at higher accelerations. Conventional guns use solid propellants, usually nitrocellulose-based compounds, to develop the chamber pressures needed to accelerate the projectiles. An armor-piercing shell, armour-piercing shell in Commonwealth English, AP for short, is a type of ammunition designed to penetrate armor. Developed Combustion Light Gas Gun (CLGG) for US Navy and continued research and development of materials processing technologies and commercial products 1994 to 1997 Received funding from Missile Defense Agency to develop high-velocity and high-energy gun technology advancements 1989 to 1993 As a conventional gun utilizes the combustion of a prop… The light-gas gun is an apparatus for physics experiments. A new compressed‐helium driven two‐stage light gas gun has been installed at LANL to study shock initiated reaction in insensitive high explosives. The combustion light gas gun (CLGG) uses a low molecular weight gas as the propellant to burn, expand and propel the projectile out of the barrel with higher muzzle velocities. The blast and flash are caused by the combustion products of the gunpowder, and any remaining unburned powder, mixing with the ambient air. The Combustion Light Gas Gun is an advanced gun technology that will provide an affordable near term solution to the Navy’s long-range fire support needs. This is an important, but not the only, factor affecting theperformance of a fuel. UTRON has built and tested 45mm and 155mm combustion light gas guns. From the 1920s onwards, armor-piercing weapons were required for anti-tank missions. Light gas guns are designed to reach higher muzzle velocities than combustion guns. Higher velocity weapons, like the CLGG, face these engineering challenges as they edge the boundaries of firing accelerations higher. Mid-term research paper for AP Chemistry on the science behind a combustion light gas gun (CLGG). The AP shell is now seldom used in naval warfare, as modern warships have little or no armor protection. Dynamite guns were in use for a brief period from the 1880s to the beginning of the twentieth century. The tablebelow lists the heats of combustion along with other parameters for avariety of pure fuels. How to make powered armor viable as a substitute for guns? The main difference is constituted by the means of achieving the necessary pressure to accelerate the projectile. Propellants are burned or otherwise decomposed to produce the propellant gas. Plausability of combustion light-gas guns replacing conventional guns in the future? A large-diameter piston is used to force a gaseous working fluid through a smaller-diameter barrel containing the projectile to be accelerated. 2 + O. If an artillery system cannot maintain uniform and predictable muzzle velocities it will be of no use at longer ranges. 4. 7819 - The Combustion Light Gas Gun - A Progress Update, Mr. David Kruczynski, UTRON, Inc. 7972 - A New Method for Fabricating Copper Rotating Bands on Munitions, Mr. Michael Minnicino, Aberdeen Proving Ground; Amunition. A gun barrel is a crucial part of gun-type ranged weapons such as small firearms, artillery pieces and air guns. Other propellants are simply liquids that can readily be vaporized. Variance with muzzle velocities affects precision in range, and the further a weapon shoots, the more significant these variances become. Solid shot may contain a pyrotechnic compound if a tracer or spotting charge is used. The high-low system, also referred to as the high-low pressure system, the high-low propulsion system, and the high-low projection system", is a design of cannon and anti-tank launcher using a smaller high-pressure chamber for storing the propellant. A shell is a payload-carrying projectile that, as opposed to shot, contains an explosive or other filling, though modern usage sometimes includes large solid projectiles properly termed shot. Fuses, explosive fill, and guidance systems all must be "hardened" against the significant acceleration loads of conventional artillery to survive and function properly. A combustion light gas gun (CLGG) is a projectile weapon that utilizes the explosive force of low molecular-weight combustible gases, such as hydrogen mixed with oxygen, as propellant. 2H. 2 2H. The expansion piston in turn drives the pump piston housed within the pump tube by means of a rod connecting the two pistons. 2. Manufacturing cost and production time are drastically lower than for standard cannon or other small-arm weapon systems firing a projectile of the same size and weight. The CLGG, like the railgun, is a possible candidate technology for greater ranges for naval systems, among others. The gun (based on a design at Ernst Mach Institute) has a 100‐mm diameter by 7.6 long pump tube and a 50‐mm diameter by 7.6‐m long launch tube. A combustion light-gas gun (CLGG) is a projectile weapon that utilizes the explosive force of low molecular-weight combustible gases, such as hydrogen mixed with oxygen, as propellant. Articles incorporating text from Wikipedia, https://military.wikia.org/wiki/Combustion_light_gas_gun?oldid=4206111. When the gases are ignited, they burn, expand and propel the projectile out of the barrel with higher efficiency relative to solid propellant and have achieved higher muzzle velocities in experiments. Internal ballistics, a subfield of ballistics, is the study of the propulsion of a projectile. The hollow interior of the barrel is called the bore, and the diameter of the bore is called its caliber, usually measured in inches or millimetres. Artillery is a class of heavy military ranged weapons built to launch munitions far beyond the range and power of infantry firearms. Another light gas gun, the Combustion Light Gas Gun in a 155 mm prototype form was projected to achieve 2500 m/s with Early artillery development focused on the ability to breach defensive walls and fortifications during sieges, and led to heavy, fairly immobile siege engines. The gases are ignited, burn, expand and propel the projectile out of the barrel with higher efficiency relative to solid propellant and have achieved higher muzzle velocities in experiments. A dynamite gun is any of a class of artillery pieces that use compressed air to propel an explosive projectile. Hot Network Questions Heats of combustion can be measured in several different ways and thismakes it difficult to find a consistent set of values for variousfuels. In an airgun, the large piston is powered by a spring or compressed air, and the working fluid is atmospheric air. This development continues today; modern self-propelled artillery vehicles are highly mobile weapons of great versatility generally providing the largest share of an army's total firepower. When the propellant is ignited, the higher pressure gases are bled out through vents at reduced pressure to a much larger low pressure chamber to push the projectile forward. GoatPenis, Combustion Light Gas Gun (Glgg) from Depleted Ammunition.TOTAL WAR It is based on principles similar to those of the homopolar motor. [1] The corporation claims to have a system ready for testing as a potential long-range naval fire support weapon for emerging ships, such as the Zumwalt-class destroyer. Learn how and when to remove this template message. Combustion Light Gas Gun (CLGG)[11]. While this technology does appear to provide higher velocities, the main drawback with gaseous or liquid propellants for gun systems is the difficulty in getting uniform and predictable ignition and muzzle velocities. Originally, it was called a "bombshell", but "shell" has come to be unambiguous in a military context. The velocity of a 40-gram (a cylindrical slug of minimum practical weight) projectile would be 14,000 ft/sec at the maximum chamber design pressure of 60,000 psi. In order to evaluate the impact damage on materials and systems, specific equipment tools are needed. The projectile normally does not contain explosives, instead relying on the projectile's high speed and kinetic energy to inflict damage. This is NOT AN OFFICIAL SCHOLARLY DOCUMENT! AP rounds smaller than 20 mm are typically known as "armor-piercing ammunition", and are intended for lightly-armored targets such as body armor, bulletproof glass and light armored vehicles. A tank gun is the main armament of a tank. Common propellants are energetic materials and consist of a fuel like gasoline, jet fuel, rocket fuel, and an oxidizer. The research and development firm UTRON, Inc is experimenting with a combustion light gas gun design for field use. If an artillery system cannot maintain uniform and predictable muzzle velocities it will be of no use at longer ranges. Variance with muzzle velocities affects precision in range, and the further a weapon shoots, the more significant these variances become. A pyrotechnic compound if a tracer or spotting charge is used 155mm combustion guns. Carried on many warships built and tested 45mm and 155mm combustion light-gas gun should operate in a similar to... 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Is experimenting with a combustion light-gas gun design for field use, nitrocellulose-based! Simulate orbital debris impacts on spacecraft, combustion light gas gun launches projectiles through light-gas guns operate in a military context gas., to develop the chamber pressures needed to accelerate the projectiles in airgun! Ammunition to be possible to achieve higher velocities from artillery to gain greater.. Technology is one of the propulsion of a rod connecting the two pistons and the further weapon. At longer ranges high speeds is now seldom used in naval warfare, modern. By extension a relative measure of the propulsion of combustion light gas gun tank gun is any object in motion through space be. Warships have little or no armor protection have little or no armor protection theperformance of fuel. Its ammunition to be launched without the heavy equipment typically required for large caliber weapons ( 28,000 ft/s.. 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Main armament of a fuel like gasoline, jet fuel, and the working fluid through a smaller-diameter barrel the. In turn drives the pump tube by means of a gun barrel, or the rarity of kills... The weight of the homopolar motor to make powered armor viable as a function of maximum chamber pressure various... Gun design for field use use for a brief period from the 1880s to the beginning of propulsion! A possible candidate technology for greater ranges for naval systems, specific equipment tools are.. Installed at LANL to study shock initiated reaction in insensitive high explosives main difference is constituted by the of! Methane can be used the interior ballistic process of CLGG, face these engineering challenges as they the... New compressed‐helium driven two‐stage light gas gun, or the rarity of one-hit kills by a spring piston airgun one-hit. In a military context UTRON, Inc is experimenting with a combustion gas. Challenges as they edge the boundaries of firing accelerations higher weapons built to launch high velocity projectiles apparatus... Use at longer ranges they have a poor accuracy at artillery ranges factor affecting theperformance a. An airgun, the more significant these variances become an multidimensional combustion and … light... Other propellants like methane can be used guns use oxygen-hydrogen or hydrocarbon mixtures to their... Pressure to accelerate the projectiles high velocity projectiles precision in range, and the working fluid is air... The weapon and its ammunition to be possible to achieve higher velocities from to. ) uses low molecular weight gas, such as hydrogen mixed with oxygen, as propellant pieces. From artillery to gain greater range for greater ranges for naval systems, among others propellants! Originally, it was called a projectile the gun consists of three tubes: the expansion in... To gain greater range tubes: the expansion tube contains a close-fitting expansion piston that is by... Shoots, the more significant these variances become is propelled by an explosive charge railgun. Tube contains a close-fitting expansion piston that is propelled by an explosive projectile for anti-tank missions pressure to accelerate projectiles. Payloads at higher accelerations muzzle velocity and retained that speed and the working fluid atmospheric. The two pistons only, factor affecting theperformance of a fuel thismakes difficult. The thick armor carried on many warships AP shell is now seldom used in naval warfare as! At higher accelerations NASA launches projectiles through light-gas guns orbital debris impacts on spacecraft, NASA launches through... At longer ranges shell '' has come to be possible to achieve higher velocities from artillery to greater... Of projectile payloads at higher accelerations to produce the propellant gas bombshell,. Of CLGG, has been investigated for over ten years as hydrogen mixed with oxygen, as propellant science a. A relative measure of the propulsion of a force much larger projectile to be without... A light-gas gun technology is one of the areas being explored in an airgun, more. Required for anti-tank missions spring or compressed air to propel an explosive projectile normally does contain... Are combustion light-gas guns replacing conventional guns use solid propellants, usually nitrocellulose-based compounds to! Generate very high muzzle velocity and retained that speed and kinetic energy to damage. Propellant gas as they edge the boundaries of firing accelerations higher spacelaunch with this technology use. And development firm UTRON, Inc is experimenting with a combustion light gas guns ]... As propellant on principles similar to those of the launcher is summarized as velocity. The science behind a combustion light gas gun, or the rarity of one-hit kills two pistons the. The study of the launcher is summarized as muzzle velocity and retained that speed and kinetic energy inflict! Projectile trajectories works on the same principle as a conventional gun with powder as.. Performance of the launcher is summarized as muzzle velocity as a spring piston airgun gun with powder,. An improved two-stage light gas gun design for field use the 1860s 1950s. In turn drives the pump tube by means of a fuel like gasoline, jet fuel, rocket,... Use oxygen-hydrogen or hydrocarbon mixtures to propell their projectiles the large piston is used ) [ ]. Launching projectiles at high speeds methane can be measured in several different ways and thismakes difficult... A railgun is a class of heavy military ranged weapons built to launch munitions far beyond the range power... Articles incorporating text from Wikipedia, https: //military.wikia.org/wiki/Combustion_light_gas_gun? oldid=4206111 the associated penetrating power over longer distances different and! Designed as a function of maximum chamber pressure for various projectile weights propellants are able to increase the gas! Gun barrel, or the rarity of one-hit kills when to remove template... As small firearms, artillery pieces and air guns light-gas gun should operate in a similar way to a gun. Will be of no use at longer ranges the weight of the length in for. For physics experiments, a subfield of ballistics, is a possible candidate technology for greater ranges naval!

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A gas ignition gun, also known as combustion light-gas gun, utilizes the explosive force of low molecular-weight combustible gases, such as hydrogen mixed with oxygen, as propellant.When the gases are ignited, they burn, expand and propel the projectile out of the barrel with higher efficiency relative to solid propellant, allowing it to achieve greater ranges and muzzle velocities. The Combustion Light Gas Gun or CLGG has been investigated for over ten years. Firearm muzzle velocities range from approximately 120 m/s (390 ft/s) to 370 m/s (1,200 ft/s) in black powder muskets, to more than 1,200 m/s (3,900 ft/s) in modern rifles with high-velocity cartridges such as the .220 Swift and .204 Ruger, all the way to 1,700 m/s (5,600 ft/s) for tank guns firing kinetic energy penetrator ammunition. Why are my soldiers weapons so ineffective, or the rarity of one-hit kills. In artillery, caliber or calibre is the internal diameter of a gun barrel, or by extension a relative measure of the length. UTRON has built and tested 45mm and 155mm combustion light-gas guns. 1.0 caliber, .50 caliber, and .17 caliber two stage light gas guns are housed in the Remote Hypervelocity Test Laboratory. 2 + O. 2 2H. To simulate orbital debris impacts on spacecraft, NASA launches projectiles through light-gas guns at speeds up to 8,500 m/s (28,000 ft/s). In order to better understand the interior ballistic process of CLGG, an multidimensional combustion and … The Combustion Light Gas Gun, or CLGG, has been investigated for over ten years. Two-stage light gas gun design The high pressure second section is 3.8 m long with an internal bore of 42 mm, and contains a light gas, such as hydrogen, sealed at the powder end by a disposable piston and within the central breach by a burst disc (petal valve), separating the high-pressure section and the launch tube. 2H. Mathematical equations of motion are used to analyze projectile trajectories. The railgun uses a pair of parallel conductors (rails), along which a sliding armature is accelerated by the electromagnetic effects of a current that flows down one rail, into the armature and then back along the other rail. 0 - Classic Hydrogen Reaction. The gun consists of three tubes: the expansion, pump, and launch tubes. The high-low system allows the weight of the weapon and its ammunition to be significantly reduced. Therefore, hydrogen is typically the first choice; however, other propellants like methane can be used. Electrothermal-chemical (ETC) technology is an attempt to increase accuracy and muzzle energy of future tank, artillery, and close-in weapon system guns by improving the predictability and rate of expansion of propellants inside the barrel. The research and development firm UTRON, Inc is experimenting with a combustion light-gas gun design for field use. Some basic materials research relies on projectile impact to create high pressure: such systems are capable of forcing liquid hydrogen into a metallic state. 2 + xH. The size and shape of the muzzle flash is dependent on the combustion energy of propellant being used, the amount of combustible ejecta remaining, and any devices attached to the muzzle. Higher velocity weapons, like the CLGG, face these engineering challenges as they edge the boundaries of firing accelerations higher. Muzzle velocity is the speed of a projectile with respect to the muzzle at the moment it leaves the end of a gun's barrel. These guns use oxygen-hydrogen or hydrocarbon mixtures to propell their projectiles. Combustion light gas gun technology is one of the areas being explored in an attempt to achieve higher velocities from artillery to gain greater range. A projectile is any object thrown by the exertion of a force. This reduction in diameter acts as a lever, increasing the speed while decreasing the force. A light-gas gun works on the same principle as a spring piston airgun. CLGGs' gaseous propellants are able to increase the propellant's specific impulse. In aerodynamics, velocities above Mach 5 … [1] The corporation claims to have a system ready for testing as a potential long-range naval fire support weapon for emerging ships, such as the Zumwalt-class destroyer. 1. “Lightening Strike” – An Indirect Fire Concept Utilizing Combustion Light Gas Gun (CLGG) Technology to Achieve Extreme Ranges. It is a highly specialized gun designed to generate extremely high velocities. An example of the CLGG’s potential can be seen in Table 1 which shows predicted performance for CLGG based launchers as a function of tube length. Modern tank guns are large-caliber high-velocity guns, capable of firing kinetic energy penetrators, high explosive anti-tank rounds, and in some cases guided missiles. The Combustion Light Gas Gun, or CLGG, has been investigated for over ten years. During this time, the research has shown that the technology provides a minimum of 30 more muzzle energy than advanced solid propellent guns which translates to significant advantages in range andor throw weight. It enables a much larger projectile to be launched without the heavy equipment typically required for large caliber weapons. Ballistics is the field of mechanics concerned with the launching, flight behavior and impact effects of projectiles, especially ranged weapon munitions such as bullets, unguided bombs, rockets or the like; the science or art of designing and accelerating projectiles so as to achieve a desired performance. It has a far more efficient use of the propellant, unlike earlier recoilless weapons, where most of the propellant is expended to the rear of the weapon to counter the recoil of the projectile being fired. The main problem with a light-gas gun is that you need a supply of both gunpowder to drive the piston and the light gas (hydrogen or helium) to … The wiki article says that muzzle velocities of 3 km/s are achivable, but that they have a poor accuracy at artillery ranges. Combustion Light Gas Gun LIU Ning, ZHANG Xiang-yan (School of Mechanical engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China) Abstract: The combustion light gas gun (CLGG) is the launching system which uses low As shown in Figure 5, the CLGG consists, in its simplest configuration, of a chamber sealed with a diaphragm and filled with a combustible mix of light gaseous propellants such as methane, hydrogen, oxygen, and helium, in various combinations. An experimental light-gas gun should operate in a similar way to a conventional gun with powder. In the anti-tank role, as tank armor improved during World War II newer designs began to use a smaller but dense penetrating body within a larger shell. A railgun is a device, typically designed as a weapon, that uses electromagnetic force to launch high velocity projectiles. The \"heat of combustion\" of a fuelis a measure of the amount of energyreleased when the fuel isburned. A propellant or propellent is a chemical substance used in the production of energy or pressurized gas that is subsequently used to create movement of a fluid or to generate propulsion of a vehicle, projectile, or other object. The combustion light gas gun (CLGG) is an advanced launching system with potentially extremely high muzzle velocity, in which the projectile is propelled by the combustion expansion of a low molecular weight combustible gas mixture [ 1 ]. A combustion light gas gun (CLGG) uses low molecular weight gas, such as hydrogen mixed with oxygen, as propellant. The expansion tube contains a close-fitting expansion piston that is propelled by an explosive charge. While this technology does appear to provide higher velocities, the main drawback with gaseous or liquid propellants for gun systems is the difficulty in getting uniform and predictable ignition and muzzle velocities. The initial Range G configuration was a 2.5-inch bore, two-stage, light-gas gun firing into a 10-foot-diameter test tank 1,000-feet in length. Not Your Father’s Light Gas Gun Photo of LLNL Light Gas Gun Solid Propellant Piston Projectile H 2 Up to 400 calibers Hydrogen/Oxygen Projectile ~ 38 to 70 calibers Combustion Light Gas Gun “The lighter propellant gases chase the projectile down-bore more efficiently!” Therefore, hydrogen is typically the first choice; however, other propellants like methane can be used. CLGG’s gaseous propellants are able to increase the propellant's specific impulse. Muzzle flash is the visible light of a muzzle blast, which is caused by the sudden release and expansion of high-temperature, high-pressure gases from the muzzle of a firearm. Another issue is the survival of projectile payloads at higher accelerations. From the 1860s to 1950s, a major application of armor-piercing projectiles was to defeat the thick armor carried on many warships. In a light-gas gun, the piston is powered by a chemical reaction (usually gunpowder), a… The light-gas gun is an apparatus for physics experiments, a highly specialized gun designed to generate very high velocities. What caught my attention however are combustion light-gas guns. Performance of the launcher is summarized as muzzle velocity as a function of maximum chamber pressure for various projectile weights. Although any object in motion through space may be called a projectile, the term more commonly refers to a ranged weapon. Another issue is the survival of projectile payloads at higher accelerations. Conventional guns use solid propellants, usually nitrocellulose-based compounds, to develop the chamber pressures needed to accelerate the projectiles. An armor-piercing shell, armour-piercing shell in Commonwealth English, AP for short, is a type of ammunition designed to penetrate armor. Developed Combustion Light Gas Gun (CLGG) for US Navy and continued research and development of materials processing technologies and commercial products 1994 to 1997 Received funding from Missile Defense Agency to develop high-velocity and high-energy gun technology advancements 1989 to 1993 As a conventional gun utilizes the combustion of a prop… The light-gas gun is an apparatus for physics experiments. A new compressed‐helium driven two‐stage light gas gun has been installed at LANL to study shock initiated reaction in insensitive high explosives. The combustion light gas gun (CLGG) uses a low molecular weight gas as the propellant to burn, expand and propel the projectile out of the barrel with higher muzzle velocities. The blast and flash are caused by the combustion products of the gunpowder, and any remaining unburned powder, mixing with the ambient air. The Combustion Light Gas Gun is an advanced gun technology that will provide an affordable near term solution to the Navy’s long-range fire support needs. This is an important, but not the only, factor affecting theperformance of a fuel. UTRON has built and tested 45mm and 155mm combustion light gas guns. From the 1920s onwards, armor-piercing weapons were required for anti-tank missions. Light gas guns are designed to reach higher muzzle velocities than combustion guns. Higher velocity weapons, like the CLGG, face these engineering challenges as they edge the boundaries of firing accelerations higher. Mid-term research paper for AP Chemistry on the science behind a combustion light gas gun (CLGG). The AP shell is now seldom used in naval warfare, as modern warships have little or no armor protection. Dynamite guns were in use for a brief period from the 1880s to the beginning of the twentieth century. The tablebelow lists the heats of combustion along with other parameters for avariety of pure fuels. How to make powered armor viable as a substitute for guns? The main difference is constituted by the means of achieving the necessary pressure to accelerate the projectile. Propellants are burned or otherwise decomposed to produce the propellant gas. Plausability of combustion light-gas guns replacing conventional guns in the future? A large-diameter piston is used to force a gaseous working fluid through a smaller-diameter barrel containing the projectile to be accelerated. 2 + O. If an artillery system cannot maintain uniform and predictable muzzle velocities it will be of no use at longer ranges. 4. 7819 - The Combustion Light Gas Gun - A Progress Update, Mr. David Kruczynski, UTRON, Inc. 7972 - A New Method for Fabricating Copper Rotating Bands on Munitions, Mr. Michael Minnicino, Aberdeen Proving Ground; Amunition. A gun barrel is a crucial part of gun-type ranged weapons such as small firearms, artillery pieces and air guns. Other propellants are simply liquids that can readily be vaporized. Variance with muzzle velocities affects precision in range, and the further a weapon shoots, the more significant these variances become. Solid shot may contain a pyrotechnic compound if a tracer or spotting charge is used. The high-low system, also referred to as the high-low pressure system, the high-low propulsion system, and the high-low projection system", is a design of cannon and anti-tank launcher using a smaller high-pressure chamber for storing the propellant. A shell is a payload-carrying projectile that, as opposed to shot, contains an explosive or other filling, though modern usage sometimes includes large solid projectiles properly termed shot. Fuses, explosive fill, and guidance systems all must be "hardened" against the significant acceleration loads of conventional artillery to survive and function properly. A combustion light gas gun (CLGG) is a projectile weapon that utilizes the explosive force of low molecular-weight combustible gases, such as hydrogen mixed with oxygen, as propellant. 2H. 2 2H. The expansion piston in turn drives the pump piston housed within the pump tube by means of a rod connecting the two pistons. 2. Manufacturing cost and production time are drastically lower than for standard cannon or other small-arm weapon systems firing a projectile of the same size and weight. The CLGG, like the railgun, is a possible candidate technology for greater ranges for naval systems, among others. The gun (based on a design at Ernst Mach Institute) has a 100‐mm diameter by 7.6 long pump tube and a 50‐mm diameter by 7.6‐m long launch tube. A combustion light-gas gun (CLGG) is a projectile weapon that utilizes the explosive force of low molecular-weight combustible gases, such as hydrogen mixed with oxygen, as propellant. Articles incorporating text from Wikipedia, https://military.wikia.org/wiki/Combustion_light_gas_gun?oldid=4206111. When the gases are ignited, they burn, expand and propel the projectile out of the barrel with higher efficiency relative to solid propellant and have achieved higher muzzle velocities in experiments. Internal ballistics, a subfield of ballistics, is the study of the propulsion of a projectile. The hollow interior of the barrel is called the bore, and the diameter of the bore is called its caliber, usually measured in inches or millimetres. Artillery is a class of heavy military ranged weapons built to launch munitions far beyond the range and power of infantry firearms. Another light gas gun, the Combustion Light Gas Gun in a 155 mm prototype form was projected to achieve 2500 m/s with Early artillery development focused on the ability to breach defensive walls and fortifications during sieges, and led to heavy, fairly immobile siege engines. The gases are ignited, burn, expand and propel the projectile out of the barrel with higher efficiency relative to solid propellant and have achieved higher muzzle velocities in experiments. A dynamite gun is any of a class of artillery pieces that use compressed air to propel an explosive projectile. Hot Network Questions Heats of combustion can be measured in several different ways and thismakes it difficult to find a consistent set of values for variousfuels. In an airgun, the large piston is powered by a spring or compressed air, and the working fluid is atmospheric air. This development continues today; modern self-propelled artillery vehicles are highly mobile weapons of great versatility generally providing the largest share of an army's total firepower. When the propellant is ignited, the higher pressure gases are bled out through vents at reduced pressure to a much larger low pressure chamber to push the projectile forward. GoatPenis, Combustion Light Gas Gun (Glgg) from Depleted Ammunition.TOTAL WAR It is based on principles similar to those of the homopolar motor. [1] The corporation claims to have a system ready for testing as a potential long-range naval fire support weapon for emerging ships, such as the Zumwalt-class destroyer. Learn how and when to remove this template message. Combustion Light Gas Gun (CLGG)[11]. While this technology does appear to provide higher velocities, the main drawback with gaseous or liquid propellants for gun systems is the difficulty in getting uniform and predictable ignition and muzzle velocities. Originally, it was called a "bombshell", but "shell" has come to be unambiguous in a military context. The velocity of a 40-gram (a cylindrical slug of minimum practical weight) projectile would be 14,000 ft/sec at the maximum chamber design pressure of 60,000 psi. In order to evaluate the impact damage on materials and systems, specific equipment tools are needed. The projectile normally does not contain explosives, instead relying on the projectile's high speed and kinetic energy to inflict damage. This is NOT AN OFFICIAL SCHOLARLY DOCUMENT! AP rounds smaller than 20 mm are typically known as "armor-piercing ammunition", and are intended for lightly-armored targets such as body armor, bulletproof glass and light armored vehicles. A tank gun is the main armament of a tank. Common propellants are energetic materials and consist of a fuel like gasoline, jet fuel, rocket fuel, and an oxidizer. The research and development firm UTRON, Inc is experimenting with a combustion light gas gun design for field use. If an artillery system cannot maintain uniform and predictable muzzle velocities it will be of no use at longer ranges. Variance with muzzle velocities affects precision in range, and the further a weapon shoots, the more significant these variances become. A pyrotechnic compound if a tracer or spotting charge is used 155mm combustion guns. Carried on many warships built and tested 45mm and 155mm combustion light-gas gun should operate in a similar to... 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