|
Gas Gun firearm mechanism
{{disambig ...
A gas gun may refer to: * A projectile-firing gun powered by compressed air: ** Air gun ** Airsoft gun (in particular a gas blowback airsoft gun) * Devices described as pneumatic cannons: ** Dynamite gun ** Holman Projector ** M61 Vulcan (also hydraulically operated) ** Potato cannon * Certain non-lethal or less-lethal firearms: ** Gas pistol ** Riot gun, especially when loaded with CS gas grenades ** Vortex ring gun * A gun that fires a stream of gas. This can be for these purposes among others: ** To generate a loud noise as a bird scarer ** For astronaut propulsion in outer space ** Light-gas gun, a velocity-generating device used in physics experiments * A gas-operated Gas-operation is a system of operation used to provide energy to operate locked breech, autoloading firearms. In gas-operation, a portion of high-pressure gas from the cartridge being fired is used to power a mechanism to dispose of the spen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Air Gun
An air gun or airgun is a gun that fires projectiles pneumatically with compressed air or other gases that are mechanically pressurized ''without'' involving any chemical reactions, in contrast to a firearm, which pressurizes gases ''chemically'' via oxidation of combustible propellants that generates propulsive energy by breaking molecular bonds. Air guns come in both long gun (air rifle) and handgun (air pistol) forms. Both types typically propel metallic projectiles that are either diabolo-shaped pellet (air gun), pellets or spherical round shot, shots called BB (ammunition), BBs, although in recent years Minié ball-shaped cylindro-conoidal bullet, cylindro-conoidal projectiles called slug (projectile), slugs are gaining more popularity. Certain types of air guns (usually air rifles) may also launch fin-stabilized projectile such as flechette, darts (e.g., tranquilizer guns) or hollow-shaft arrows (so-called "airbows"). The first air guns were developed as early as the 16 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Airsoft Gun
Airsoft guns are replica toy guns used in airsoft sports. They are a special type of low-power smoothbore air guns designed to shoot airsoft pellets, non-metallic spherical projectiles (pb) often colloquially (but incorrectly) referred to as "BB (ammunition), BBs", which are typically made of (but not limited to) plastic or biodegradable polymer, biodegradable resin materials. Airsoft gun powerplants are designed to have low muzzle energy ratings (generally less than 1.5 Joule, J, or 1.1 Foot-pound (energy), ft⋅lb) and the pellets have significantly less penetration (weaponry), penetrative and stopping powers than conventional airguns, and are generally safe for competitive sporting and recreational purposes if proper protective gear is worn. Depending on the design mechanism for pellet propulsion, airsoft guns can be categorized into two groups: mechanical, which consists of a coil spring-loaded piston pump, piston air pump that is either manually cocked (e.g. spring guns) or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dynamite Gun
A dynamite gun is any of a class of artillery pieces that use compressed air to propel an explosive projectile (such as one containing dynamite). Dynamite guns were in use for a brief period from the 1880s to the beginning of the twentieth century. Because of the instability of early high explosives, it was impractical to fire an explosive-filled shell from a conventional explosive-fired gun. The violent deflagration of the propellant charge and the sudden acceleration of the shell would set off the explosive in the barrel of the weapon. By using compressed air, the dynamite gun was able to accelerate the projectile more gradually through the length of the barrel. Guns for naval use were supplied with air from shipboard compressors. A small model for field use by land forces employed a powder charge to drive a piston down a cylinder, compressing air that was then fed into the gun barrel. This field model was famously used by Theodore Roosevelt's Rough Riders during the Spanis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Holman Projector
The Holman Projector was an anti-aircraft weapon used by the Royal Navy during World War II, primarily between early 1940 and late 1941. The weapon was proposed and designed by Holmans, a machine tool manufacturer based at Camborne, Cornwall. A number of models were produced during the war years, but all worked on the principle of a pneumatic mortar, using compressed air or high pressure steam to fire an explosive projectile at enemy aircraft. Intended primarily as a stop-gap defensive weapon for British merchant ships, which had been suffering heavy losses from Luftwaffe aircraft flying anti-shipping missions, the low altitude at which such strikes often took place (such as during torpedo attacks by Heinkel He 111s or skip-bombing attacks by Focke-Wulf Fw 200 Condor) meant that a weapon of such limited range and velocity could throw up an effective screen of fire over a vessel, even if only to create a distracting or deterrent effect, obliging the enemy to bomb from greater h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
M61 Vulcan
The M61 Vulcan is a hydraulically, electrically, or pneumatically driven, six-barrel, air-cooled, electrically fired Gatling-style rotary cannon which fires rounds at an extremely high rate (typically 6,000 rounds per minute). The M61 and its derivatives have been the principal cannon armament of United States military fixed-wing aircraft for over sixty years. The M61 was originally produced by General Electric. After several mergers and acquisitions, it is currently produced by General Dynamics. Development At the end of World War II, the United States Army Air Forces began to consider new directions for future military aircraft guns. The higher speeds of jet-powered fighter aircraft meant that achieving an effective number of hits would be extremely difficult without a much higher volume of fire. While captured German designs (principally the Mauser MG 213C) showed the potential of the single-barrel revolver cannon, the practical rate of fire of such a design was still lim ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Potato Cannon
A potato cannon is a pipe-based cannon that uses air pressure ( pneumatic), or combustion of a flammable gas (aerosol, propane, etc.), to launch projectiles at high speeds. They are built to fire chunks of potato, as a hobby, or to fire other sorts of projectiles, for practical use. Projectiles or failing guns can be dangerous and result in life-threatening injuries, including cranial fractures, enucleation, and blindness if a person is hit. The potato cannon can trace its origin to the World War II-era Holman Projector, which was a shipboard anti-aircraft weapon. Launcher types All spud guns propel projectiles down their barrels using pressurised gas in the same manner as a firearm (although at a much lower pressure). There are four basic ways that spud guns may achieve this: * By the combustion of a gaseous fuel-air mixture; this is generally called a combustion launcher, and its pressure is limited primarily by the energy density of the fuel-air mixture (less than with a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gas Pistol
A gas pistol is a non-lethal weapon used for self-defense and other purposes. It is typically a close-to-exact replica or conversion of a traditional handgun made to be able to fire blanks or tear gas cartridges. Effective range is up to 4.5 metres depending on caliber. For legal purposes various techniques are used during manufacture/conversion to prevent the use of live ammunition, such as using calibers exclusive to gas cartridges, welding obstacles into a non-removable barrel and using malleable metal alloys. Gas pistols are prevalent in European countries with strict gun control laws. Gas pistols are also used in weapons training, and as starting pistols, flare guns, and movie props. Calibers Most popular calibers are the 9mm Knall (9x17 mm R K, 9 mm R K, .380 Knall) for revolvers and the 9 mm PAK ( 9x22 mm) for semi-automatic. Other types include the .315 Knall, 8 mm Knall (8x20 mm), .22 Lang Knall, .45 Short Knall (.45 Knall) and the 6 mm perc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Riot Gun
In current usage, a riot gun or less-lethal launcher is a type of firearm used to fire "non-lethal" or "less-lethal" ammunition for the purpose of suppressing riots or apprehending suspects with minimal harm or risk. Less-lethal launchers may be special purpose firearms designed for riot control use, or standard firearms, usually shotguns and grenade launchers, adapted for riot control use with appropriate ammunition. The ammunition is most commonly found in 12 gauge (18.5 mm/.729 inches) shotguns and 37mm/ 40 mm (1.46 inches/1.57 inches) grenade launchers. In the United States, the term ''riot gun'' more commonly refers to a riot shotgun. Ammunition Less-lethal launchers can fire various sorts of ammunition, including: *Impact projectiles, which rely on kinetic energy, such as baton rounds, bean bag rounds, or rubber bullets *Tear gas cartridge *Pepper spray * Stun rounds *Smoke round *Less-lethal shotgun shells *Less-lethal grenades *Sound-emitting projectiles *GLI ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
CS Gas
The compound 2-chlorobenzalmalononitrile (also called ''o''-chlorobenzylidene malononitrile; chemical formula: C10H5ClN2), a cyanocarbon, is the defining component of tear gas commonly referred to as CS gas, which is used as a riot control agent. Exposure causes a burning sensation and tearing of the eyes to the extent that the subject cannot keep their eyes open, and a burning irritation of the mucous membranes of the nose, mouth and throat, resulting in profuse coughing, nasal mucus discharge, disorientation, and difficulty breathing, partially incapacitating the subject. CS gas is an aerosol of a volatile solvent (a substance that dissolves other active substances and that easily evaporates) and 2-chlorobenzalmalononitrile, which is a solid compound at room temperature. CS gas is generally accepted as being non-lethal. It was first synthesized by two Americans, Ben Corson and Roger Stoughton, at Middlebury College in 1928, and the chemical's name is derived from the firs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vortex Ring Gun
The vortex ring gun is an experimental non-lethal weapon for crowd control that uses high-energy vortex rings of gas to knock down people or spray them with marking ink or other chemicals. The concept was explored by the US Army starting in 1998, and by some commercial firms. Knockdown of distant individuals currently seems unlikely even if the rings are launched at theoretical maximum speed. As for the delivery of chemicals, leakage during flight is still a problem. Weapons based on similar principles but different designs and purposes have been described before, typically using acetylene-air or hydrogen–oxygen explosions to create and propel the vortices. Operation In a typical concept, a blank cartridge is fired into a gun barrel that has a diverging nozzle screwed onto the muzzle. In the nozzle, the short pulse of high pressure gas briefly accelerates to a supersonic exit velocity, whereupon a portion of the exhaust transforms from axial flow into a subsonic, high ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bird Scarer
Bird scarers is a blanket term used to describe devices designed for deterring birds by startling, confusing or otherwise repeling them, typically employed in commercial settings by farmers to dissuade birds from consuming and defecating on recently planted arable crops. Numerous bird scarers are also readily available to the public direct to consumer, or by means of purchase from independent retailers. Bird scarers are also often present on airfields to prevent birds from accumulating in proximity to runways and causing a potential hazard to the bird and/or aircraft as well as potentially increasing the frequency an airstrip requires maintenance, and wind turbines. Visual scarers Scarecrow One of the oldest designs of bird scarer is the scarecrow which is in the shape of a human figure. The scarecrow idea has been built upon numerous times, and not all visual scare devices are shaped like humans. The "Flashman Birdscarer," Iridescent tape, "TerrorEyes" balloons, and other visua ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Astronaut Propulsion Unit
An astronaut propulsion unit (or astronaut maneuvering unit) is used to move an astronaut relative to the spaceship during a spacewalk. The first astronaut propulsion unit was the Hand-Held Maneuvering Unit (HHMU) used on Gemini 4. Models Hand-Held Maneuvering Unit The Hand-Held Maneuvering Unit was the EVA "zip" gun used by Ed White on the Gemini 4 mission in 1965. The hand-held gun held several pounds of nitrogen, and allowed limited movement around the Gemini spacecraft. It was also used by astronaut Michael Collins on the Gemini 10 mission in 1966. USAF Astronaut Maneuvering Unit The United States Air Force (USAF) Astronaut Maneuvering Unit (AMU) was designed by the U.S. Air Force, which was planning to use the Gemini spacecraft as part of the Manned Orbiting Laboratory (MOL). The AMU was a backpack using hydrogen peroxide as the fuel. The total delta-v capability of the AMU was about 250 feet per second (76.2 meters per second), roughly three times that of the MMU ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
