The Combustion Light Gas Gun or CLGG has been investigated for over ten years. These types of guns are also called hypervelocity guns since the projectile travels at more than Mach 5 (1500 m/s at sea level). A light-gas gun works on the same principle as a spring piston airgun. Plausability of combustion light-gas guns replacing conventional guns in the future? In aerodynamics, velocities above Mach 5 … Articles incorporating text from Wikipedia, https://military.wikia.org/wiki/Combustion_light_gas_gun?oldid=4206111. David Kruczynski Stephen G. Floroff. 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 , … These guns use oxygen-hydrogen or hydrocarbon mixtures to propell their projectiles. Solid shot may contain a pyrotechnic compound if a tracer or spotting charge is used. 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 tablebelow lists the heats of combustion along with other parameters for avariety of pure fuels. A dynamite gun is any of a class of artillery pieces that use compressed air to propel an explosive projectile. The main difference is constituted by the means of achieving the necessary pressure to accelerate the projectile. 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. GoatPenis, Combustion Light Gas Gun (Glgg) from Depleted Ammunition.TOTAL WAR 7741 - Super 40mm High Explosive Air Burst - Shaping the Future, Mrs. Kara Sims, General Dynamics - OTS This reduction in diameter acts as a lever, increasing the speed while decreasing the force. Higher velocity weapons, like the CLGG, face these engineering challenges as they edge the boundaries of firing accelerations higher. 2. 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. The combustible gas mixture is … The expansion tube contains a close-fitting expansion piston that is propelled by an explosive charge. 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. 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. 1.0 caliber, .50 caliber, and .17 caliber two stage light gas guns are housed in the Remote Hypervelocity Test Laboratory. 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 light-gas gun is an apparatus for physics experiments. 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. The research and development firm UTRON, Inc is experimenting with a combustion light-gas gun design for field use. Combustion Gun: Light weight, Portable, Cheap, Reusable, Easy to make, World's first most light weight and transparent yet powerful gun ! C. Light Gas Guns []. Conventional guns use solid propellants, usually nitrocellulose-based compounds, to develop the chamber pressures needed to accelerate the projectiles. Dynamite guns were in use for a brief period from the 1880s to the beginning of the twentieth century. In order to evaluate the impact damage on materials and systems, specific equipment tools are needed. Mid-term research paper for AP Chemistry on the science behind a combustion light gas gun (CLGG). 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. 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. 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. Variance with muzzle velocities affects precision in range, and the further a weapon shoots, the more significant these variances become. These lightweight shells were fired at very high muzzle velocity and retained that speed and the associated penetrating power over longer distances. Anti-aircraft guns can also be mounted to tanks. CLGG’s gaseous propellants are able to increase the propellant's specific impulse. The expansion piston in turn drives the pump piston housed within the pump tube by means of a rod connecting the two pistons. How to make powered armor viable as a substitute for guns? Performance of the launcher is summarized as muzzle velocity as a function of maximum chamber pressure for various projectile weights. The projectile normally does not contain explosives, instead relying on the projectile's high speed and kinetic energy to inflict damage. From the 1860s to 1950s, a major application of armor-piercing projectiles was to defeat the thick armor carried on many warships. An experimental light-gas gun should operate in a similar way to a conventional gun with powder. The light-gas gun is an apparatus for physics experiments, a highly specialized gun designed to generate very high velocities. The effect of incomplete combustion were estimated. The gun consists of three tubes: the expansion, pump, and launch tubes. 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. It is based on principles similar to those of the homopolar motor. 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. The research and development firm UTRON, Inc is experimenting with a combustion light gas gun design for field use. 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. Learn how and when to remove this template message. In a light-gas gun, the piston is powered by a chemical reaction (usually gunpowder), a… Conventional guns use solid propellants, usually nitrocellulose-based compounds, to develop the chamber pressures needed to accelerate the projectiles. A gun barrel is a crucial part of gun-type ranged weapons such as small firearms, artillery pieces and air guns. The wiki article says that muzzle velocities of 3 km/s are achivable, but that they have a poor accuracy at artillery ranges. 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 Another issue is the survival of projectile payloads at higher accelerations. Mathematical equations of motion are used to analyze projectile trajectories. A projectile is any object thrown by the exertion of a force. A combustion light gas gun (CLGG) uses low molecular weight gas, such as hydrogen mixed with oxygen, as propellant. This is NOT AN OFFICIAL SCHOLARLY DOCUMENT! 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 2H. From the 1920s onwards, armor-piercing weapons were required for anti-tank missions. 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. This is an important, but not the only, factor affecting theperformance of a fuel. 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. It is thought to be possible to achieve non-rocket spacelaunch with this technology. 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 a conventional gun utilizes the combustion of a prop… 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. 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 … 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. The AP shell is now seldom used in naval warfare, as modern warships have little or no armor protection. Why are my soldiers weapons so ineffective, or the rarity of one-hit kills. 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. 2 + xH. In artillery, caliber or calibre is the internal diameter of a gun barrel, or by extension a relative measure of the length. 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. 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. An improved two-stage light gas gun for launching projectiles at high speeds. 2H. 1. 2 2H. 2 + O. UTRON has built and tested 45mm and 155mm combustion light gas guns. 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. 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. 4. [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. Fuzes, explosive fill, and guidance systems all must be "hardened" against the significant acceleration loads of conventional artillery to survive and function properly. 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, or CLGG, has been investigated for over ten years. 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. 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. 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. Common propellants are energetic materials and consist of a fuel like gasoline, jet fuel, rocket fuel, and an oxidizer. Internal ballistics, a subfield of ballistics, is the study of the propulsion of a projectile. 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. Although any object in motion through space may be called a projectile, the term more commonly refers to a ranged weapon. “Lightening Strike” – An Indirect Fire Concept Utilizing Combustion Light Gas Gun (CLGG) Technology to Achieve Extreme Ranges. Therefore, hydrogen is typically the first choice; however, other propellants like methane can be used. 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. In an airgun, the large piston is powered by a spring or compressed air, and the working fluid is atmospheric air. As technology improved, lighter, more mobile field artillery cannons developed for battlefield use. It is a highly specialized gun designed to generate extremely high velocities. 2 + O. 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. Therefore, hydrogen is typically the first choice; however, other propellants like methane can be used. 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. Light gas guns are designed to reach higher muzzle velocities than combustion 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 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. 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