The use of boron-based powder materials in solid propellant compositions is an effective method for increasing the energy characteristics in the combustion chamber due to increasing the released energy through the combustion of boron particles. In this study, powders of amorphous boron and aluminum borides, obtained by the method of self-propagating high-temperature synthesis—the SHS method, which were added to the composite solid propellant composition based on a double oxidizer and an energy fuel binder, are studied. The paper presents the characteristics of thermal decomposition, ignition, and combustion for solid propellant samples. The tested samples are ignited using a continuous CO₂ laser in the air in the heat flux density range of 90 to 200 W/cm². The combustion of propellant samples is carried out in a manometric bomb in a nitrogen atmosphere at pressures ranging from 0.5 to 7.0 MPa. It is shown that the use of amorphous boron and aluminum boride powders in the solid propellant composition reduce the ignition delay time and increase the burning rate of the samples compared to the aluminum-based propellant composition, due to the increase in temperature near the surface of the reaction layer of the sample and the specific heat release during the oxidation and burning of boron.

中文翻译：

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基于双氧化剂和硼基添加剂的复合固体推进剂的点火和燃烧

在固体推进剂组合物中使用硼基粉末材料是增加燃烧室中能量特性的有效方法，这是由于通过硼颗粒燃烧增加了释放的能量。在本研究中，通过自蔓延高温合成方法（SHS方法）获得的无定形硼和硼化铝粉末被添加到基于双氧化剂和能量燃料粘合剂的复合固体推进剂组合物中。研究。本文介绍了固体推进剂样品的热分解，着火和燃烧特性。使用连续CO ₂激光在空气中以90至200 W / cm ²的热通量密度点燃被测样品。。推进剂样品的燃烧在氮气压力下的高压炸弹中进行，压力范围为0.5到7.0 MPa。结果表明，与铝基推进剂组合物相比，在固体推进剂组合物中使用无定形硼和硼化铝粉末减少了点火延迟时间并提高了样品的燃烧速率，这是由于铝表面推进剂表面附近的温度升高所致。样品的反应层以及硼在氧化和燃烧过程中的比热释放。