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Originally meant to provide the Luftwaffe standard aircraft with superior high-altitude performance, technological considerations limited its use to extremely high altitudes. The technique was used during by aircraft with the system to boost the power output of. Sometimes nitrous oxide is injected into (or prior to) the intake manifold, whereas other systems directly inject, right before the cylinder (direct port injection) to increase power. Nitrous oxide is stored as a compressed liquid the and expansion of liquid nitrous oxide in the causes a large drop in intake charge temperature, resulting in a denser charge, further allowing more air/fuel mixture to enter the cylinder. Nitrous oxide is a strong oxidant, roughly equivalent to hydrogen peroxide, and much stronger than oxygen gas. Therefore, it often is mixed with another fuel that is easier to deflagrate. The gas is not flammable at a low pressure/temperature, but it delivers more than atmospheric air by breaking down at elevated temperatures. Main article: In vehicle, nitrous oxide (often referred to as just ') allows the engine to burn more fuel by providing more oxygen than air alone, resulting in a more powerful combustion. At 600 psi for example, the required ignition energy is only 6 joules, whereas N 2O at 130 psi a 2500-joule ignition energy input is insufficient. Nitrous oxide is said to at approximately 600 ☌ (1,112 ☏) at a pressure of 309 psi (21 atmospheres). While noticeably less than the I sp available from thrusters (monopropellant or with ), the decreased toxicity makes nitrous oxide an option worth investigating. In a vacuum thruster, this may provide a monopropellant ( I sp) of as much as 180 s. In the presence of a heated, N 2O will decompose exothermically into nitrogen and oxygen, at a temperature of approximately 1,070 ☏ (577 ☌).īecause of the large heat release, the catalytic action rapidly becomes secondary, as thermal autodecomposition becomes dominant. It also is notably used in and with various plastics as the fuel. ![]() The combination of nitrous oxide with fuel has been used by and others. Nitrous oxide has been the oxidiser of choice in several designs (using solid fuel with a liquid or gaseous oxidizer). In a 1914 patent, American rocket pioneer suggested nitrous oxide and gasoline as possible propellants for a liquid-fuelled rocket. Its high density and low storage pressure (when maintained at low temperature) enable it to be highly competitive with stored high-pressure gas systems. As a secondary benefit, it may be decomposed readily to form breathing air. This is advantageous over other oxidisers in that it is not only non-toxic, but due to its stability at room temperature is also easier to store and relatively safe to carry on a flight.
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