AP combustion gas constant/temperature

I forgot to say its AP/Aluminum propellant I'm interested in.

Steve

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

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

^-- That seems rather high

I annotated

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

Many thanks all.

Steve