This paper reports results from studies of the combustion of 2,4-dinitro-2,4-diazapentane (DNP), 2,4,6-trinitro-2,4,6-triazaheptane, and a ternary mixture containing 43% DNP, 44.5% 2,4-dinitro-2,4-diazahexane, 12.5% 3,5-dinitro-3,5-diazaheptane, and double-base powders containing these nitramines, including combustion catalysts.