Rocket Essay

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Rocketry 101 Categories The term "non-professional rocketry" is so broad that it is typically broken down further in general use. There are four common categories used to describe the sub-groups: * Model Rocketry is what many of us did as children. The classic model rockets are those made by Estes, Centuri (now defunct) and Quest. Estes and Quest rockets are available in most hobby shops and larger toy stores. These rockets use pre-manufactured, inexpensive, usually black powder motors up to "D" size. The rockets generally weigh a few ounces and fly less than 1000 feet high, which allows them to be flown in any open space without special permission. Model rockets are usually simple to build and quite safe. People who enjoy model rocketry are generally more interested in rocket design and frequent flying since motors are inexpensive ($1-$4 per flight). * Mid-Power Rocketry (also Large Model Rocketry) is the next step up in power from model rocketry. These rockets use pre-manufactured, composite ammonium perchlorate motors in the "E" through "G" sizes. The largest manufacturer of mid-power kits is AeroTech, although there are many other companies. These rockets also generally weigh under a pound, but fly much higher than model rockets. Rockets which fly above 1000 feet require FAA notification so you will generally be restricted to club launches. Mid-power rockets are more demanding to build than model rockets, although many of the materials and building techniques are the same. The motors are a bit more expensive ($4-$15 per flight), but not outrageous. * High-Power Rocketry encompasses the largest rockets built with commercially manufactured motors and sanctioned by national organizations. The motors used range from "H" through "O" size. The largest manufacturers of high-power kits are Loc/Precision and Public Missiles, Ltd., although there are a few

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