2 + xH. Another issue is the survival of projectile payloads at higher accelerations. These guns use oxygen-hydrogen or hydrocarbon mixtures to propell their projectiles. Light gas guns are designed to reach higher muzzle velocities than combustion guns. Fuzes, explosive fill, and guidance systems all must be "hardened" against the significant acceleration loads of conventional artillery to survive and function properly. 2H. Higher velocity weapons, like the CLGG, face these engineering challenges as they edge the boundaries of firing accelerations higher. 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. 4. 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. 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. Combustion Gun: Light weight, Portable, Cheap, Reusable, Easy to make, World's first most light weight and transparent yet powerful gun ! The research and development firm UTRON, Inc is experimenting with a combustion light gas gun design for field use. 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. CLGGs' gaseous propellants are able to increase the propellant's specific impulse. A gun barrel is a crucial part of gun-type ranged weapons such as small firearms, artillery pieces and air guns. 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. These types of guns are also called hypervelocity guns since the projectile travels at more than Mach 5 (1500 m/s at sea level). Another light gas gun, the Combustion Light Gas Gun in a 155 mm prototype form was projected to achieve 2500 m/s with 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. This reduction in diameter acts as a lever, increasing the speed while decreasing the force. In artillery, caliber or calibre is the internal diameter of a gun barrel, or by extension a relative measure of the length. Another issue is the survival of projectile payloads at higher accelerations. Hot Network Questions Common propellants are energetic materials and consist of a fuel like gasoline, jet fuel, rocket fuel, and an oxidizer. The Combustion Light Gas Gun or CLGG has been investigated for over ten years. 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. In a light-gas gun, the piston is powered by a chemical reaction (usually gunpowder), a… David Kruczynski Stephen G. Floroff. 2 2H. 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. Anti-aircraft guns can also be mounted to tanks. Plausability of combustion light-gas guns replacing conventional guns in the future? 2. “Lightening Strike” – An Indirect Fire Concept Utilizing Combustion Light Gas Gun (CLGG) Technology to Achieve Extreme Ranges. 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. It is usually used to study high-speed impact phenomena, such as the formation of impact craters by meteorites or the erosion of materials by micrometeoroids. An improved two-stage light gas gun for launching projectiles at high speeds. Dynamite guns were in use for a brief period from the 1880s to the beginning of the twentieth century. Some basic materials research relies on projectile impact to create high pressure: such systems are capable of forcing liquid hydrogen into a metallic state. As a conventional gun utilizes the combustion of a prop… The light-gas gun is an apparatus for physics experiments. If an artillery system cannot maintain uniform and predictable muzzle velocities it will be of no use at longer ranges. 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 light-gas gun works on the same principle as a spring piston airgun. A dynamite gun is any of a class of artillery pieces that use compressed air to propel an explosive projectile. From the 1860s to 1950s, a major application of armor-piercing projectiles was to defeat the thick armor carried on many warships. The tablebelow lists the heats of combustion along with other parameters for avariety of pure fuels. 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 AP shell is now seldom used in naval warfare, as modern warships have little or no armor protection. Propellants are burned or otherwise decomposed to produce the propellant gas. An experimental light-gas gun should operate in a similar way to a conventional gun with powder. The expansion tube contains a close-fitting expansion piston that is propelled by an explosive charge. 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. 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. Conventional guns use solid propellants, usually nitrocellulose-based compounds, to develop the chamber pressures needed to accelerate the projectiles. [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. Higher velocity weapons, like the CLGG, face these engineering challenges as they edge the boundaries of firing accelerations higher. UTRON has built and tested 45mm and 155mm combustion light-gas guns. 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 The Combustion Light Gas Gun, or CLGG, has been investigated for over ten years. The effect of incomplete combustion were estimated. 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. This is an important, but not the only, factor affecting theperformance of a fuel. Artillery is a class of heavy military ranged weapons built to launch munitions far beyond the range and power of infantry firearms. 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. 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 main difference is constituted by the means of achieving the necessary pressure to accelerate the projectile. 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 … 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. Fuses, explosive fill, and guidance systems all must be "hardened" against the significant acceleration loads of conventional artillery to survive and function properly. These lightweight shells were fired at very high muzzle velocity and retained that speed and the associated penetrating power over longer distances. 2 2H. This is NOT AN OFFICIAL SCHOLARLY DOCUMENT! The Combustion Light Gas Gun, or CLGG, has been investigated for over ten years. GoatPenis, Combustion Light Gas Gun (Glgg) from Depleted Ammunition.TOTAL WAR 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. Why are my soldiers weapons so ineffective, or the rarity of one-hit kills. The high-low system allows the weight of the weapon and its ammunition to be significantly reduced. 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) uses low molecular weight gas, such as hydrogen mixed with oxygen, as propellant. 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 , … 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. In order to better understand the interior ballistic process of CLGG, an multidimensional combustion and … In an airgun, the large piston is powered by a spring or compressed air, and the working fluid is atmospheric air. 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. In order to evaluate the impact damage on materials and systems, specific equipment tools are needed. The gun consists of three tubes: the expansion, pump, and launch tubes. UTRON has built and tested 45mm and 155mm combustion light gas guns. A projectile is any object thrown by the exertion of a force. Heats of combustion can be measured in several different ways and thismakes it difficult to find a consistent set of values for variousfuels. 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 … Early artillery development focused on the ability to breach defensive walls and fortifications during sieges, and led to heavy, fairly immobile siege engines. 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. C. Light Gas Guns []. 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. 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. In aerodynamics, velocities above Mach 5 … The expansion piston in turn drives the pump piston housed within the pump tube by means of a rod connecting the two pistons. As technology improved, lighter, more mobile field artillery cannons developed for battlefield use. The \"heat of combustion\" of a fuelis a measure of the amount of energyreleased when the fuel isburned. 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. 2 + O. 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. Variance with muzzle velocities affects precision in range, and the further a weapon shoots, the more significant these variances become. 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. It is thought to be possible to achieve non-rocket spacelaunch with this technology. 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. 1.0 caliber, .50 caliber, and .17 caliber two stage light gas guns are housed in the Remote Hypervelocity Test Laboratory. The wiki article says that muzzle velocities of 3 km/s are achivable, but that they have a poor accuracy at artillery ranges. Therefore, hydrogen is typically the first choice; however, other propellants like methane can be used. 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. 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. 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. 2H. 2 + O. 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. Way to a conventional gun utilizes the combustion light gas gun, or by extension a relative of! 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