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首页> 外文期刊>Chemometrics and Intelligent Laboratory Systems >Ingredient and processing effects on the burning rates of composite rocket propellants utilizing a reduced-run mixture-process experiment design
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Ingredient and processing effects on the burning rates of composite rocket propellants utilizing a reduced-run mixture-process experiment design

机译：减程混合工艺实验设计对复合火箭推进剂燃烧速率的成分和加工影响

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摘要

Composite propellants are now being processed using twin screw extrusion (TSE) to enhance process safety, reduce production costs, minimize lot-to-lot variation, and in some cases, enhance performance. The process is a complex system consisting of multiple ingredient streams feeding into a continuous mixer with an output through an extrusion die producing a structure that is cut into 30-in. lengths of solid composite propellant. By exploiting transient effects of ingredient feeding rate changes during processing, the TSE can be used to easily process composite propellants over wide composition ranges to vary properties for creating rocket motor grains with compositional gradients or to develop new formulations through a combinatorial approach. Therefore, it is necessary to develop a systematic approach for quantifying ingredient and processing effects in TSE on composite propellants processed in a steady-state to serve as a baseline for comparison with composite propellants processed in a transient-state. Such an approach is described using a reduced-run mixture-process experiment design based on the KCV algorithm to minimize the number of samples required for testing over a wide composition range. A corresponding response surface analysis of the results from these experiments indicates a significant dependence of burning rate on both ingredients and processing conditions.
机译：现在正在使用双螺杆挤出（TSE）对复合推进剂进行处理，以提高工艺安全性，降低生产成本，最大程度地减少批次间差异，并在某些情况下提高性能。该方法是一个复杂的系统，由多种成分流组成，这些成分流被送入连续混合器，并通过挤出模头输出，从而生产出切成30英寸长的结构。固体复合推进剂的长度通过利用加工过程中原料进料速度变化的瞬态效应，TSE可用于轻松加工宽组成范围内的复合推进剂，从而改变性能以产生具有成分梯度的火箭发动机颗粒，或通过组合方法开发新配方。因此，有必要开发一种系统的方法来量化TSE中对稳态处理的复合推进剂的成分和处理效果，以作为与瞬态处理的复合推进剂进行比较的基准。使用基于KCV算法的减少运行的混合过程实验设计来描述这种方法，以最小化在较宽的组成范围内测试所需的样品数量。对来自这些实验的结果的相应响应表面分析表明，燃烧速率对成分和加工条件都有很大的依赖性。

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