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首页> 外文会议>AIAA propulsion and energy forum;AIAA/SAE/ASEE joint propulsion conference >Burning Characteristics of AP/HTPB Propellants Supplemented with Low Thermal Conductivity Powders
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Burning Characteristics of AP/HTPB Propellants Supplemented with Low Thermal Conductivity Powders

机译：掺有低导热性粉末的AP / HTPB推进剂的燃烧特性

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Thermal conduction in solid propellants is a dominant process of solid propellant combustion and influences the burning characteristics of the propellants. Fine, high thermal conductivity materials do not affect the burning characteristics of propellants, while low thermal conductivity materials improve them. This study is part of a series of studies on the influence of variations in solid-phase thermal conduction on the burning characteristics of propellants. ZrO_2, steatite, and SiO_2 were used as low thermal conductivity materials. These additives increased the burning rate by the hot spot effect. In addition, the influence of these additives on the burning rate was dependent on the ammonium perchlorate particle size. For the propellant with coarse ammonium perchlorate particles, the enhancement in the burning rate was dependent on the particle size or the specific surface area of the additives.
机译：固体推进剂中的热传导是固体推进剂燃烧的主要过程，并影响推进剂的燃烧特性。精细，高导热率的材料不会影响推进剂的燃烧特性，而低导热率的材料则会改善它们。这项研究是固相热传导变化对推进剂燃烧特性影响的一系列研究的一部分。 ZrO_2，滑石和SiO_2被用作低热导率材料。这些添加剂通过热点效应提高了燃烧速度。另外，这些添加剂对燃烧速率的影响取决于高氯酸铵的粒径。对于带有粗高氯酸铵颗粒的推进剂，燃烧速度的提高取决于添加剂的粒径或比表面积。

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