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Model rocket fuel

2010-10-07 13:51:57.511226+00 by Dan Lyke 1 comments

MarkV shared this video of a fairly large amateur rocket noting that the propellant used was "rocket candy", a mixture of sugar and potassium nitrate (which I've done before with kids for smoke bombs), although they apparently use corn syrup as a binder (rather than fully melting the sugar, they just cook out the liquid), and iron oxide (rust) as a catalyst.

Discussion ensued, and Mark then pointed out that sorbitol makes a less brittle fuel and has a much lower melting temperature, giving a larger safety margin and making it a good rocket fuel.

[ related topics: Children and growing up Cool Science Food Space & Astronomy Video ]

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#Comment Re: made: 2010-10-07 19:19:03.127226+00 by: petronius

New motto for the space program: Ad Astra per Minibus Calorius!