ROCKET PROPELLENTS

USE THE INFORMATION FOR CONSTRUCTIVE PURPOSES :-
AND PLEASE USE COMMON SENSE
DO NOT MIX LARGE MIXTURES ie. <10 GRAMS


The ratios of oxidizers and fuels depends on the type of engine desired. The amount of oxidizer can be as high as 90% as in some ammonium nitrate mixes to as little as 20% ammonium perchlorate as in some water breathing engines.

A fast burning mixture: Potassium Perchlorate 20%
Isp=200 Ammonium Perchlorate 55%
Epoxy Resin/Hardener 17%
Powdered Aluminum 8%
This is very fast burning but the exhaust makes a fairly heavy smoke.

A slow burning propellant. Great for sustainer engines.
Isp=165 Ammonium Nitrate 70%
Ammonium Perchlorate 10%
Polyester Resin 18%
Powdered Charcoal 2%
Not very powerful but useful. The charcoal helps keep the combustion steady.

A very powerful mixture: Ammonium Perchlorate 75%
Isp=250 Powdered Aluminum 10%
PVC in THF 15%

IMPORTANT :-All the ingredients should be dampened with THF (tetrahydrofuran) before mixing.
Do this in an area with very good ventilation and wear rubber gloves to keep from contacting the THF with bare skin.
This mixture is best used in a perforated grain to help the solvent evaporate.
An ammonium nitrate based propellant: Ammonium Nitrate 70%
Isp=160 Powdered Aluminum 5%
Polyester Resin 18%
Ammonium Bichromate 5%
Powdered Charcoal 2%
A good mix when perchlorates are not available.
Do not under any circumstances use chlorates for rocket propellants. You will not make a rocket, just a pipe bomb with fins.