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David

Darling

bipropellant

A bipropellant is a rocket propellant consisting of two substances, the fuel and the oxidizer, that are held separate prior to combustion. Bipropellants are commonly used in liquid-propellant rocket engines. There are many examples, including RP-1 (a kerosine-containing mixture) and liquid oxygen (used by the Atlas family), and liquid hydrogen and liquid oxygen (used by the Space Shuttle).