Ideally, the composition should consist only of KN and epoxy. However,
IO is needed to modify the burn rate characteristics to be suitable to
make a practical propellant. The IO is largely inert, chemically, with
regard to the combustion process.(?) A GUIPEP run with IO modified such
that it is nonreactive gives the same Isp, Tf,c*, etc (?). However, it
presense is not completely detrimental, from a propulsive aspect. Its
mass is accelerated and produces momentum thrust. As such, 8% proportion
results in a perfomrance loss of only about 4%.
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