OP-II-3

PP-III-23EFFECT OF CATALYSTS ON HIGH-ENERGY MATERIALSWITH A CHLORINELESS OXIDIZER BURNINGArkhipov V.A. 1 , Bespalov I.S. 2 , Gorbenko T.I. 2 ,Kuznetsov V.T. 1 , Savel’eva l.A. 11 Research Institute of Applied Mathematics and Mechanicsof Tomsk State University, 634050, Tomsk, Russia2 Tomsk State University, 634050, Tomsk, Russialeva@niipmm.tsu.ruNow due to the intensification of space-rocket activity the ecological requirementsto high-energy materials (HEM) combustion products have sharply increased. One ofperspective way to create the non-polluting HEM compositions is replacement oftraditional used ammonium perchlorate by chlorineless oxidizer - ammonium nitrate(AN). To compensate the decrease of HEM power performances the nitramins,energetic binder (EB) and ultrafine aluminum powders are added into propellants.The experimental research results of effect of condensed system compositionswith chlorineless oxidizer and energetic binder on burning rate at atmosphericpressure are presented in this report. The analysis of catalysts effect on burningprocess, percentage and dispersity of aluminum powders on burning rate iscarried out.Experimental researches was carried out on two basic compositions withcoefficient of oxidizer excess α =0.545. Basic compositions (are given in the table)contained ammonium nitrate, energetic additive (EA), energetic binder with its owncoefficient of oxidizer excess α =0.407. The mechanical mixture of micron sizealuminum powder (АSD-6 grade, specific surface A sp =0.56 m 2 /g) and an ultrafinealuminum powder ("Alex" grade, A sp =15.5 m 2 /g) was used as a metal fuel. In thisresearch the catalysts: a silicon dioxide (SiO 2 ), soot and a mix of these catalysts inthe ratio 1/1, was used. These catalysts were added in amount of 2 mass % over100 % fuel mass.HEM compositions were moulded with the help of fluoroplastic die by extrusionmethod. Cylindrical test-pieces with a diameter of 10 mm and height of (30-35) mmwhich density value spread did not exceed 0.02 g / sm 3 were used. Lateral surface ofsamples was covered with a solution of linoleum in acetone. The stationary burningrate was measured at atmospheric pressure.482