Jan 5, 2014

What is Cryogenic Engines and Cryogenic Fuels?


What is Cryogenic Engine?

Cryogenic jet engine is nothing but a jet engine that consumption's a cryogenic fuels or oxidizers, that is, its fuels or oxidizers (or together) are gases liquid and kept at very less temperatures. Especially, these engines were one in altogether the most factors of the last word success in attainment the Moon by the Saturn-V rocket.

The cryogenic engine consist of the combustion chamber, fuel injector, pyrotechnic igniter, oxidizer cryo pumps, fuel cryo pumps, gas turbine, cryo valves, regulators, jet engine nozzle and the fuel tanks. In terms of providing propellants to the combustion chamber, cryogenic engines are either pressure-fed or pump-fed, and pump-fed engines add either a gas-generator cycle, a staged-combustion cycle, or an ex-pander cycle.

These powerful rocket engines were initially considered by the American, German and Soviet engineers individualistically, all revealed that rocket engines need Great Mass rate of flow of both oxidizer and fuel to get a sufficient thrust. At that point chemical element (oxygen) and low relative molecular mass hydrocarbons were used as chemical agent and fuel try. At temperature and pressure, both are in gaseous state. In theory, if propellants had been stored as pressurized gases, the dimensions and mass of fuel tanks themselves would severely decrease rocket potency. Therefore, to urge the specified mass rate of flow, the sole option was to cool down the propellants all the way down to cryogenic temperatures (below -150°C, −238°F), transforming them to liquid form. Hence, all cryogenic rocket engines are, by definition, either liquid-propellant rocket engines or hybrid rocket engines.

What is Cryogenic Fuels?

Cryogenic fuels are fuels that need tidying away at very low temperatures in order to keep them in a liquid state. These fuels are utilized in the machines that operate in house (For example - Rocket ships, Satellites, etc.) as a result of normal fuel cannot be used there, because of absence of surroundings that supports ignition. Refrigerant fuels most frequently represent liquefied gases like liquid hydrogen.


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