Perchlorate black powder?

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vello - 28 Jun 2006 19:28 GMT

Most available oxidizer for beginners is probably KNO3, but it is hard
to make composite propellant from it. Is it wrong to think that
components used for composite (epoxide resin etc) are inferior to sugar
as fuels - and "candy propellant" or even black powder with ammonium
perchlorate instead of KNO3 would be very powerful propellant? Any
experiences from folks having access to perchlorate?

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John Smith - 29 Jun 2006 04:55 GMT

You are asking for disaster.

If you want to work with ammonium perc based propellants, read up on them
and use formulae & methods developed by people who know what they are doing.
Such propellants are indeed more powerful, but unless formulated and made
correctly thay can be MUCH less stable than your sugar propellant. Your
suggested perc BP comp would result in a bomb rather than a rocket.

> Most available oxidizer for beginners is probably KNO3, but it is hard
> to make composite propellant from it. Is it wrong to think that
> components used for composite (epoxide resin etc) are inferior to sugar
> as fuels - and "candy propellant" or even black powder with ammonium
> perchlorate instead of KNO3 would be very powerful propellant? Any
> experiences from folks having access to perchlorate?

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Kurt - 30 Jun 2006 15:25 GMT

Read up or take a class. Ammonium perchlorate composite can be safer
than BP to mix.. Again you have to know what you are doing. I agree
with John that the mixture you profess is flirting with disaster.

Alway, always, always, test at great distances out in the middle of
nowhere before trying to fly anything.

Kurt

> You are asking for disaster.
>
[quoted text clipped - 10 lines]
>>perchlorate instead of KNO3 would be very powerful propellant? Any
>>experiences from folks having access to perchlorate?

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vello - 30 Jun 2006 19:51 GMT

> You are asking for disaster.
>
[quoted text clipped - 10 lines]
> > perchlorate instead of KNO3 would be very powerful propellant? Any
> > experiences from folks having access to perchlorate?

I don't plan to test it :-) Perchlorates are not available and also
illegal in Estonia. Just wondering why mixes so popular with one
oxidizer are not used with other. No data about use of perchlorate BP
in military in past? As fuel for nozzleless rockets?

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Model Forum / General / Rockets / June 2006

Perchlorate black powder?