Chain Reaction
In space and astronautical engineering, chain reaction refers to a self-sustaining reaction that occurs when a neutron collides with an atomic nucleus, causing it to split and release more neutrons that go on to collide with other nuclei, creating a cascade of reactions. This process is used in nuclear reactors and weapons to generate energy or release destructive force. In space propulsion, chain reaction can also refer to a series of chemical reactions that occur in a rocket engine, where the heat generated by the combustion of fuel ignites the next stage of fuel, creating a continuous thrust. This process is used in solid rocket boosters and some liquid rocket engines.
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