Propellant Gas
Propellant gas is a type of gas that is used to provide thrust to a spacecraft or rocket. It is typically stored in tanks on the spacecraft and expelled through a nozzle to create a reaction force that propels the spacecraft forward. The choice of propellant gas depends on a number of factors, including the mission requirements, the size and weight of the spacecraft, and the desired velocity. Some common types of propellant gases include liquid hydrogen, liquid oxygen, and nitrogen tetroxide. The use of propellant gas is a critical component of space and astronautical engineering, as it enables spacecraft to achieve the necessary velocities to reach their intended destinations.
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