|MadSci Network: Engineering|
Dear Steven, First of all, if you do not have anyone close to you to advise you as to how to build a model rocket, than you probably should *not* attempt anything of the sort because of the possibility to injure yourself and others. The question that you ask is non-specific, which further belies ignorance in the art of model rocket construction, which, again, is worrying. The 'best' fuel naturally would depend on the application. If you're building a professional-grade high-altitude rocket, you might employ composite fuels, or perhaps polymer-perchlorate compositions, or even liquid fuels/liquid oxidizer combinations. I suspect thought that this is not what you have in mind. For loq-level model rocket applications, the best motors are those that are pre-made and are available commercially (but these may not be available in your country). If you're going to make your own motors you first and foremost *must* check if what you're intending to do is legal and that you have approval of your school and parents, because otherwise you may end up in more trouble than you bargained for. Then, your next step would be either to locate a pyrotechnic/rocketry enthusiast somewhere in the area, or, if you utterly fail at that, locate a couple of pyrotechnical books. Low-level rockets can employ black powder-derived compositions, or somewhat more exotic mixtures including even the famous sugar-KNO3 mixtures that are described on several webpages such as e.g. http://www.nerorockets.org/eindhoven/eeh-motors.htm Again, I cannot overemphasize the importance of knowing what you're doing *before* doing it because even the mildest high-energy material is potentially deadly. Please contact me directly if you would like to continue to communicate on the subject. A.G.E.
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