CLGGs' gaseous propellants are able to increase the propellant's specific impulse. 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. 0 - Classic Hydrogen Reaction. 2. Propellants are burned or otherwise decomposed to produce the propellant gas. A combustion light gas gun (CLGG) uses low molecular weight gas, such as hydrogen mixed with oxygen, as propellant. Some basic materials research relies on projectile impact to create high pressure: such systems are capable of forcing liquid hydrogen into a metallic state. The high-low system allows the weight of the weapon and its ammunition to be significantly reduced. 2 + O. From the 1860s to 1950s, a major application of armor-piercing projectiles was to defeat the thick armor carried on many warships. 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. The research and development firm UTRON, Inc is experimenting with a combustion light gas gun design for field use. [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. The term is unique to the United States and is generally not used in other English-speaking countries, which initially used proprietary names such as "Ballistite" and "Cordite" but gradually shifted to "propellant" as the generic term. These lightweight shells were fired at very high muzzle velocity and retained that speed and the associated penetrating power over longer distances. 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). 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. How to make powered armor viable as a substitute for guns? 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. 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. 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. This is an important, but not the only, factor affecting theperformance of a fuel. Conventional guns use solid propellants, usually nitrocellulose-based compounds, to develop the chamber pressures needed to accelerate the projectiles. If an artillery system cannot maintain uniform and predictable muzzle velocities it will be of no use at longer ranges. Mid-term research paper for AP Chemistry on the science behind a combustion light gas gun (CLGG). It is the straight shooting tube, usually made of rigid high-strength metal, through which a contained rapid expansion of high-pressure gas(es) is introduced behind a projectile in order to propel it out of the front end (muzzle) at a high velocity. 2 2H. UTRON has built and tested 45mm and 155mm combustion light gas guns. It is a highly specialized gun designed to generate extremely high velocities. The blast and flash are caused by the combustion products of the gunpowder, and any remaining unburned powder, mixing with the ambient air. These types of guns are also called hypervelocity guns since the projectile travels at more than Mach 5 (1500 m/s at sea level). 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. 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. 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 4. A projectile is any object thrown by the exertion of a force. 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 AP shell is now seldom used in naval warfare, as modern warships have little or no armor protection. In order to evaluate the impact damage on materials and systems, specific equipment tools are needed. The knowledge of material properties involved in impact situations is critical in different technological areas in order to guarantee safe operations. If an artillery system cannot maintain uniform and predictable muzzle velocities it will be of no use at longer ranges. Another light gas gun, the Combustion Light Gas Gun in a 155 mm prototype form was projected to achieve 2500 m/s with 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. From the 1920s onwards, armor-piercing weapons were required for anti-tank missions. 2 + O. 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. 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. 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. The wiki article says that muzzle velocities of 3 km/s are achivable, but that they have a poor accuracy at artillery ranges. 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. The effect of incomplete combustion were estimated. Find link is a tool written by Edward Betts.. searching for Combustion light-gas gun 1 found (4 total) alternate case: combustion light-gas gun Railgun (12,676 words) no match in snippet view article find links to article for development as military weapons. The expansion tube contains a close-fitting expansion piston that is propelled by an explosive charge. The gun is a ranged weapon typically designed to pneumatically discharge solid projectiles but can also be liquid or even charged particles and may be free-flying or tethered. 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. 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) 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 ]. As technology improved, lighter, more mobile field artillery cannons developed for battlefield use. Combustion Light Gas Gun (CLGG)[11]. A gun barrel is a crucial part of gun-type ranged weapons such as small firearms, artillery pieces and air guns. The Combustion Light Gas Gun or CLGG has been investigated for over ten years. 6349 - The Combustion Light Gas Gun: A novel yet proven high velocity technology, Mr. David Kruczynski, UTRON, Inc. Fuel Cells for Munitions, Mr. Edgar Seydel, Th e Ashlawn Group 6332 - Plasma-Enchanced Magnetron Technology for Durable Pollution-Free Coatings, Dr. Sabrina Lee , … Light gas guns are designed to reach higher muzzle velocities than combustion guns. Learn how and when to remove this template message. This is NOT AN OFFICIAL SCHOLARLY DOCUMENT! Smokeless powder is the name given to a number of propellants used in firearms and artillery that produce negligible smoke when fired, unlike the gunpowder or black powder they replaced. 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. 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. 1. Plausability of combustion light-gas guns replacing conventional guns in the future? 2H. The CLGG, like the railgun, is a possible candidate technology for greater ranges for naval systems, among others. UTRON has built and tested 45mm and 155mm combustion light-gas guns. Dynamite guns were in use for a brief period from the 1880s to the beginning of the twentieth century. Hot Network Questions David Kruczynski Stephen G. Floroff. A large-diameter piston is used to force a gaseous working fluid through a smaller-diameter barrel containing the projectile to be accelerated. The Combustion Light Gas Gun, or CLGG, has been investigated for over ten years. 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. Therefore, hydrogen is typically the first choice; however, other propellants like methane can be used. Performance of the launcher is summarized as muzzle velocity as a function of maximum chamber pressure for various projectile weights. A tank gun is the main armament of a tank. The main difference is constituted by the means of achieving the necessary pressure to accelerate the projectile. In aerodynamics, velocities above Mach 5 … 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. In order to better understand the interior ballistic process of CLGG, an multidimensional combustion and … The CLGG, like the railgun, is a possible candidate technology for greater ranges for naval systems, among others. The tablebelow lists the heats of combustion along with other parameters for avariety of pure fuels. Therefore, hydrogen is typically the first choice; however, other propellants like methane can be used. 1.0 caliber, .50 caliber, and .17 caliber two stage light gas guns are housed in the Remote Hypervelocity Test Laboratory. 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!” Heats of combustion can be measured in several different ways and thismakes it difficult to find a consistent set of values for variousfuels. A ram accelerator is a device for accelerating projectiles or just a single projectile to extremely high speeds using jet-engine-like propulsion cycles based on ramjet or scramjet combustion processes. 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 \"heat of combustion\" of a fuelis a measure of the amount of energyreleased when the fuel isburned. An experimental light-gas gun should operate in a similar way to a conventional gun with powder. It is based on principles similar to those of the homopolar motor. CLGG’s gaseous propellants are able to increase the propellant's specific impulse. Higher velocity weapons, like the CLGG, face these engineering challenges as they edge the boundaries of firing accelerations higher. 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. 2H. 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. A light-gas gun works on the same principle as a spring piston airgun. 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. 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. C. Light Gas Guns []. Another issue is the survival of projectile payloads at higher accelerations. The light-gas gun is an apparatus for physics experiments, a highly specialized gun designed to generate very high velocities. 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. Why are my soldiers weapons so ineffective, or the rarity of one-hit kills. What caught my attention however are combustion light-gas guns. The gun consists of three tubes: the expansion, pump, and launch tubes. 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. In an airgun, the large piston is powered by a spring or compressed air, and the working fluid is atmospheric air. This reduction in diameter acts as a lever, increasing the speed while decreasing the force. The projectile normally does not contain explosives, instead relying on the projectile's high speed and kinetic energy to inflict damage. Mathematical equations of motion are used to analyze projectile trajectories. 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. 7741 - Super 40mm High Explosive Air Burst - Shaping the Future, Mrs. Kara Sims, General Dynamics - OTS The research and development firm UTRON, Inc is experimenting with a combustion light-gas gun design for field use. Anti-aircraft guns can also be mounted to tanks. 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. Variance with muzzle velocities affects precision in range, and the further a weapon shoots, the more significant these variances become. 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. 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. This gun was in operation until 1994 when the larger 3.3-inch gun was installed and the older 2.5 inch gun became the Range I launcher. 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. A railgun is a device, typically designed as a weapon, that uses electromagnetic force to launch high velocity projectiles. 2. Variance with muzzle velocities affects precision in range, and the further a weapon shoots, the more significant these variances become. 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. Conventional guns use solid propellants, usually nitrocellulose-based compounds, to develop the chamber pressures needed to accelerate the projectiles. Originally, it was called a "bombshell", but "shell" has come to be unambiguous in a military context. Although any object in motion through space may be called a projectile, the term more commonly refers to a ranged weapon. A dynamite gun is any of a class of artillery pieces that use compressed air to propel an explosive projectile. Common propellants are energetic materials and consist of a fuel like gasoline, jet fuel, rocket fuel, and an oxidizer. It enables a much larger projectile to be launched without the heavy equipment typically required for large caliber weapons. Higher velocity weapons, like the CLGG, face these engineering challenges as they edge the boundaries of firing accelerations higher. Other propellants are simply liquids that can readily be vaporized. 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. During this time the research has shown that the technology provides a minimum of 30% more muzzle energy than advanced solid propellant guns which translates to significant advantages in … “Lightening Strike” – An Indirect Fire Concept Utilizing Combustion Light Gas Gun (CLGG) Technology to Achieve Extreme Ranges. 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. Fuzes, 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. GoatPenis, Combustion Light Gas Gun (Glgg) from Depleted Ammunition.TOTAL WAR It is thought to be possible to achieve non-rocket spacelaunch with this technology. The light-gas gun is an apparatus for physics experiments. An armor-piercing shell, armour-piercing shell in Commonwealth English, AP for short, is a type of ammunition designed to penetrate armor. The combustible gas mixture is … 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. 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