High-power Rocketry
As with low-power model rockets, high-power rockets are also constructed from lightweight materials. Unlike model rockets, high-power rockets often require stronger materials such as fiberglass, composite materials, and aluminum to withstand the higher stresses during flights that often exceed speeds of Mach 1 (340 m/s) and over 3,000 m (10,000 ft.) altitude.
High-power rockets are propelled by larger motors ranging from class H to class O, and/or weight more than 1,500 grams at liftoff. Their motors are almost always reloadable rather than single-use in order to reduce cost. Recovery and/or multi-stage ignition may be initiated by small on-board computers, which use an altimeter or accelerometer for detecting when to ignite engines or deploy parachutes.
High-power model rockets can carry large payloads, including cameras and instrumentation such as GPS units.
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