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Cake day: June 12th, 2023

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  • As it uses fuel, the acceleration increases because the same thrust is pushing less mass. But at some point, it reaches the max acceleration they want, (which depending on the mission or payload could be 3 Gs to 5 Gs) so they start adjusting the thrust to keep the same acceleration as the mass is reduced. This is typical for most rockets, just with different specific numbers. Especially for something which could eventually be human rated, as humans really don’t like anything above 3 Gs.