The results of combustion study for high-energy compositions (HECs) based on\nammonium perchlorate (AP), butadiene rubber and ultrafine powder (UFP) aluminum Alex,\nand agglomeration of metal particles on the burning surface and composition of condensed\ncombustion products (CCPs) are presented. It was found that partial replacement 2 wt. % of\nAlex by iron UFP in HEC increases the burning rate 1.3ââ?¬â??1.4 times at the range of nitrogen\npressure 2.0ââ?¬â??7.5 MPa and reduces the mean diameter of CCPs particles d43 from 37.4 m to\n33.5 m at pressure 4 MPa. Upon partial replacement 2 wt. % of Alex by boron UFP in HEC\nthe recoil force of gasification products outflow from burning surface is increased by 9 % and\nthe burning rate of HEC does not change in the above pressure range, while the mean diameter\nof CCPs particles is reduced to 32.6 m at p 4 MPa.
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