Principles of Regulation of Combustion Characteristics of Condensed Energetic Materials
The models were investigated to estimate the influence of additives on combustion characteristics of solid propellants. In the homogeneous case the simple equations for burning rate and temperature in the reaction front were considered which take into account heat effect of the additive and relation between the rates of additive transformation and main (leading) reaction. Calculations have shown that additive influences in the definite region of pressures, moreover the curves of dependence of pressure and temperature coefficients on pressure may have extreme (minimum or maximum). In the heterogeneous case a layer system model (sandwich) was used in which a heat exchange between the base material (oxidizer or homogenous mixture of it with fuel) and the additive through the combustion front in the condensed and gas phases was considered. It was stated the existence of different ways of additive influence depending on relation between the preheating zone width and size of additive. At small sizes of additive the full heat exchange between components occurs and the system becomes of homogeneous structure, at great sizes the additive does not influence the burning. But at middle sizes the intermediate regimes in the dependencies arise: the additive with a heating effect causes slowing-down of burning rate growth with pressure and pressure coefficient decreases, in the case of cooling effect of additive the rate growth accelerates and pressure coefficient increases. The theoretical results were confirmed by experimental date on combustion of solid propellants containing ammonium perchlorate (AP), ammonium dinitramide, nitramines, nitrate esters and various additives.
solid propellant additive modeling
STRUNIN Vladimir MANELIS Georgiy
Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, Moscow Region, 142432, Russia
国际会议
2009 International Autumn Seminar on Propellants,Ezplosives and Pyrotechnics(2009国际推进剂、炸药、烟火技术秋季研讨会)
昆明
英文
1-7
2009-09-22（万方平台首次上网日期，不代表论文的发表时间）