Atomic Mass

Atomic mass is the mass of an atom of a chemical element, expressed in atomic mass units (amu). In the context of space and astronautical engineering, atomic mass is an important concept in rocket propulsion. The mass of the propellant used in a rocket is a critical factor in determining the rocket's performance. The specific impulse of a rocket engine, which is a measure of its efficiency, is directly related to the exhaust velocity of the propellant. The exhaust velocity, in turn, is determined by the atomic mass of the propellant. Therefore, the atomic mass of the propellant is a key factor in determining the performance of a rocket engine.
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