Propulsion
High-power rockets are predominantly powered by commercially-available APCP-based motors or nitrous oxide-based hybrid motors. Experimental Propulsion is also the source of propulsion for many high-power rockets.
Motors for High-Power Rocketry are "H" and above. The lettered naming system is a standard in the hobby in which successive letters double the delivered impulse of the previous letter. Each letter also has a range of impulses under which a given motor can be classified.
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