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首页> 外文会议>AIAA/SAE/ASEE joint propulsion conference;AIAA propulsion and energy forum >Comprehensive Study of AP Particle Size and Loading Effects on the Burning Rates of Composite AP/HTPB Propellants
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Comprehensive Study of AP Particle Size and Loading Effects on the Burning Rates of Composite AP/HTPB Propellants

机译：AP粒径和负载量对复合AP / HTPB推进剂燃速的综合研究

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The effects of altering ammonium perchlorate (AP) particle size or concentration in composite AP/HTPB solid propellants are well documented. Existing propellant burning rate datasets include these variations, but they have significant holes in their current data span. In the current study, IPDI-cured composite AP/HTPB propellants were manufactured with AP mass concentrations between 70 and 87.5% and unimodal AP sizes between 20 and 500 µm, and propellant burning rates were evaluated at pressures of 500-2,250 psi. Decreasing the AP particle size or increasing the AP concentration yielded increases in burning rate, as expected. The AP particle size effect is more drastic than that of the AP loading. The resulting dataset was coupled with several existing propellant datasets from the literature to develop for the first time a simple, empirical correlation that captures these effects. The developed correlation accurately predicts propellant burning rate for a large span of AP particle sizes and concentrations over a wide range of pressure.
机译：改变AP / HTPB固体推进剂中高氯酸铵（AP）粒径或浓度变化的影响已得到充分证明。现有的推进剂燃烧速率数据集包括这些变化，但它们在当前数据跨度中存在明显漏洞。在当前的研究中，制造了IPDI固化的AP / HTPB复合推进剂，其质量浓度为70至87.5％，单峰AP尺寸为20至500 µm，并在500-2,250 psi的压力下评估了推进剂的燃烧速率。如预期的那样，减小AP粒径或增加AP浓度可提高燃烧速率。 AP颗粒尺寸的影响比AP负载的影响更大。所得的数据集与文献中现有的几种推进剂数据集相结合，首次开发出一种简单的经验相关性来捕获这些影响。所建立的相关性可准确预测大范围压力下AP颗粒大小和浓度的推进剂燃烧速率。

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