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Ammonium Perchlorate Composite Propellant

Ammonium Perchlorate Composite Propellant (APCP) is used in the Space Shuttle's Solid Rocket Boosters. It's also used in most mid-power and high-power sport rocketry motors.

APCP consists of an oxidizer, ammonium perchlorate (NH4ClO4), combined with a polymer as the fuel. The polymer also servers as a binder.

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