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• 19:32, 16 August 2026 Mike talk contribs created page Chemical Drive Spacecraft (Created page with "Chemical reaction drives work much like modern rockets. A fuel is mixed with an oxidizer, ignited, and expelled at high speed through a nozzle to create thrust. The efficiency of a rocket fuel is measured by its '''specific impulse''' (usually abbreviated '''Isp'''). Higher Isp generally means that the engine can produce more change in velocity from a given amount of propellant. By 2158, three fuel combinations dominate: * '''Methalox''' (liquid methane and liquid oxy...")