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Amateur rocketry, sometimes known as experimental rocketry or amateur experimental rocketry, is a hobby in which participants experiment with fuels and make their own rocket motors, launching a wide variety of types and sizes of rockets.
Rocket vehicles carry their own oxidiser, unlike most combustion engines, so rocket engines can be used in a vacuum, and they can achieve great speed, beyond escape velocity. Vehicles commonly propelled by rocket engines include missiles , artillery shells , ballistic missiles and rockets of any size, from tiny fireworks to man-sized weapons to ...
Model rocketry is a safe and widespread hobby. Individuals such as G. Harry Stine and Vernon Estes helped to ensure this by developing and publishing the NAR Model Rocket Safety Codes [1] [13] [14] and by commercially producing safe, professionally designed and manufactured model rocket motors.
The use of a winged launch vehicle allows using lift rather than thrust to overcome gravity, which greatly reduces gravity losses. On the other hand, the reduced gravity losses come at the price of much higher aerodynamic drag and aerodynamic heating due to the need to stay much deeper within the atmosphere than a pure rocket would during the boost phase.
It supports all aspects of safe consumer sport rocket flying, from small model rockets with youth groups to very large high-power rockets flown by adult hobbyists. [4] The NAR is a recognized national authority for performance and reliability certification of consumer rocket motors and for the certification of high-power rocket fliers in the U.S.
The rocket is launched using liquid hydrogen and liquid oxygen cryogenic propellants. Rocket propellant is used as reaction mass ejected from a rocket engine to produce thrust . The energy required can either come from the propellants themselves, as with a chemical rocket , or from an external source, as with ion engines .
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Brian Walker is a toy inventor from Bend, Oregon [1] who is known for attempting to build his own rocket and as the inventor of several toys, namely the air bazooka. His rocket is known as Project R.U.S.H., which stands for Rapid Up Super High. It was intended to be fueled by hydrogen peroxide and equipped with parachutes for use when landing ...