Artwork by Dean Ellis (for The Last Hurrah Of The Golden Horde); There is a nice basic overview of propulsion systems here.. You can spend lots of time researching spacecraft propulsion systems.
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Everything about fundamental spacecraft design revolves around the Tsiolkovsky rocket equation.. Δ v = V e * ln[R]. The variables are the velocity change required by the mission (Δ v or delta-V), the propulsion system's exhaust velocity (V
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