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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 ...
Nazi Germany made extensive use of various types of gas chambers for mass-murder during the Holocaust. Beginning in 1939, gas chambers were used as part of Aktion T4 , an " involuntary euthanasia " program under which the Nazis murdered people with physical and intellectual disabilities, whom the Nazis considered "unworthy of life" .
A light gas gun, the Combustion Light Gas Gun in a 155 mm prototype form was projected to achieve 2500 m/s with a 70 caliber barrel. [10] In some hypervelocity research projects, projectiles are 'pre-injected' into railguns, to avoid the need for a standing start, and both two-stage light-gas guns and conventional powder guns have been used for ...
Most nations use rapid-fire cannon on light vehicles, replacing a more powerful, but heavier, tank gun. A typical autocannon is the 25 mm "Bushmaster" chain gun, mounted on the LAV-25 and M2 Bradley armoured vehicles. Autocannons may be capable of a very high rate of fire, but ammunition is heavy and bulky, limiting the amount carried.
Some contact explosives contain an oxidizer and a fuel in their composition. [6] Chemicals like gasoline, a fuel, burn instead of explode because they must come into contact with oxygen in the combustion reaction. However, if the compound already contains both the oxidant and fuel, it produces a much faster and violent reaction.
The gaseous state of water is lighter than air (density 0.804 g/L at STP, average molecular mass 18.015 g/mol) due to water's low molar mass when compared with typical atmospheric gases such as nitrogen gas (N 2). It is non-flammable and much cheaper than helium. The concept of using steam for lifting is therefore already 200 years old.
The auto ignition point of blast furnace gas is approximate 630–650 °C (1,166–1,202 °F) and it has a lower explosive limit (LEL) of 27% and an upper explosive limit (UEL) of 75% in an air-gas mixture at normal temperature and pressure. The high concentration of carbon monoxide makes the gas hazardous.
Since nitrogen is a colorless and odourless gas that already makes up 78 per cent of air, such a change would be difficult to detect. Cryogenic liquids are hazardous if spilled. Liquid nitrogen can cause frostbite and can make some materials extremely brittle. As liquid nitrogen is colder than 90.2K, oxygen from the atmosphere can condense.