What is Cryogenic Engine?

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What is Cryogenic Engine?
A cryogenic engine is an engine that is designed to run on liquid fuels that require extremely low temperatures to remain liquid. Cryogenics is the study of extremely low temperatures and its effect on the materials that it is applied to.

When the gases used on a cryogenic engine are stored in normal temperatures, they transform into their gaseous state. Cryogenic engines usually use liquid hydrogen and liquid oxygen which are stored at temperatures below -423 degrees Fahrenheit and -297 degrees Fahrenheit in order to remain in its liquid state.

When used in engines, the engine’s components are kept cool so that the fuel does not turn into gas on its way to feed the engine. The high thrust on the engine originates from the rapid expansion of the gas from its liquid state to gas, thereby forcing air in huge amounts from its motor, to be burned for energy on its way out. This technology is used mostly in space exploration. One advantage is the powerful thrust and high performance of the engine. The disadvantage is the bulk and the need for heavy insulation in order to keep the fuel in gas state.

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