Friday, July 6, 2012

How to make Rocket Candy

Now, here's my favorite cheap and easy-to-make propellant : the Rocket Candy.

It's my favorite because it is very easy to make, it doesn't require a binder and it has pretty good performance.

The chemicals are just potassium nitrate (saltpeter) and sugar, the same sugar you use to make a cake, in a proportion of 65% KNO3/35% sugar.

The procedure is as follow :
  • Put the chemicals in water in a pan.
  • Heat and bring to a boil the water.
  • Heat until there's no water remaining, you should have a white slurry, here's the propellant.
  • Take this slurry and put it in your rocket engine.
  • You can also put 3% weight of iron oxide (Fe2O3) or manganese dioxide (MnO2) as they acts as catalysts.
  • BEWARE ! Do not heat for too long or the sugar will caramelize and it is very fire sensitive. Just a spark can ignite it.
The Rocket Candy can also be used as a smoke generator but you can't dyed it.
As always if you want to make it, the chemicals are available in the right side.


1 comment:

  1. hello...as for iron oxide, can i use the spark from angle grinder? someone suggested iron rust but the size is quite large when scrapped from steel bar...

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