AP combustion gas constant/temperature

Can anyone provide me with the:

combustion gas constant
and
combustion gas temperature
for AP (ammonium perchlorate) based propellant (not black powder).
Thanks.
Steve
Reply to
Steve
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Steve,
That depends on your ratios of AP, AL, Binder and curative. There is a program called GUIPEP/PROPEP that can help you out. It is shareware. I don't have the link handy, but a search will turn it up.
Mike Fisher Binder Design
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Reply to
Mfreptiles
Thanks Mike - PROPEP seems to provide exactly what I want.
The next question would be what do Aerotech/Cesaroni etc. use for ratios? I just need an approximate idea. GDL PROPEP seems to default to this (by weight):
Ammonium Perchlorate 69% Aluminium 16% Iron Oxide 1% R45M (Binder?) 14%
Would that be reasonable approximation for Aerotech and Cesaroni motors?
Steve
Reply to
Steve
Not even close. It would be foolish for me to try to guess. Aerotech uses a widely different formula(s) than Cesaroni. Nobody uses that much aluminum in small motors, although White Lightning does use a large amount of magnesium. No way that they are processing at 86% solids, probably closer to 80% with the addition of DOA to thin the mix.
Mike Fisher
Reply to
Mfreptiles

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