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What is a composite propellant solid rocket motor?

April 26, 2017Composite motor propellant rocket solid

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What is a composite propellant solid rocket motor?

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A composite propellant solid rocket motor consists of a chemically setting liquid and a powdered solid oxidiser, with various powdered metals added in addition. The powdered solid oxidiser and metals are cast as a propellant grain using a rubber or plasticised binder (normally HTPB), which sets as a rubber-like solid. The Specific Impulse of a composite propellant solid rocket motor ranges from about 160 seconds to 220 seconds.