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Preliminary investigation of paraffin-based fuel combustion in solid fuel scramjet

机译：固体燃料炒具中石蜡基燃料燃烧的初步研究

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摘要

The purpose of this paper is to study the combustion characteristics of paraffin-based fuel grain in a supersonic flow, as a preliminary to investigate its potential as fuel in a solid fuel scramjet. Paraffin-based fuel, due to its high regression rate, will pyrolyze more fuel gas in the solid fuel scramjet during the same period of time, indicating that its application would increase the combustion efficiency of the solid fuel scramjet. Based on the strength and energy density of the fuel, the paraffin-based fuel applied herein consists of 45% paraffin, 40% aluminum powder, and 15% hydroxyl-terminated polybutadiene. Due to the lack of regression rate law of the paraffin-based fuel, a regression rate model for the paraffin-based fuel was established. Experiments were carried out on the ground dedicated connected-pipe static test facility to verify the correctness of the model. The numerical results are in good agreement with the experimental results. The results show that in solid fuel scramjet, the regression rate of paraffin-based fuel is 2-3 times that of poly-methyl methacrylate fuel. The total combustion efficiency of a paraffin-based solid fuel scramjet increases with the combustion process.
机译：本文的目的是研究超声波流动中石蜡基燃料粒的燃烧特性，作为研究其作为固体燃料炒作燃料中的燃料的初步初步。基于石蜡的燃料，由于其高回归率，在同一段时间内将在固体燃料碎片喷射中热化更多的燃料气体，表明其应用将增加固体燃料炒作的燃烧效率。基于燃料的强度和能量密度，施加的基于石蜡基燃料由45％石蜡，40％铝粉和15％羟基封端的聚丁二烯组成。由于石蜡基燃料缺乏回归率定律，建立了石蜡基燃料的回归率模型。实验是在地面专用连接管静态测试设施上进行的，以验证模型的正确性。数值结果与实验结果吻合良好。结果表明，在固体燃料炒作中，石蜡基燃料的回归速率为聚 - 甲基丙烯酸甲酯燃料的2-3倍。基于石蜡基固体燃料碎屑癌的总燃烧效率随燃烧过程而增加。

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  • 来源
    《Acta astronautica》 |2020年第8期|119-130|共12页
  • 作者

    Zhang Hao; Wang Ningfei; Wu Zhiwen; Fang Guanlin; Wei Zhijun;

  • 作者单位

    Beijing Inst Technol Sch Aerosp Engn Beijing 100081 Peoples R China;

    Beijing Inst Technol Sch Aerosp Engn Beijing 100081 Peoples R China;

    Beijing Inst Technol Sch Aerosp Engn Beijing 100081 Peoples R China;

    Beijing Inst Technol Sch Aerosp Engn Beijing 100081 Peoples R China;

    Beijing Inst Technol Sch Aerosp Engn Beijing 100081 Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Solid fuel scramjet; Paraffin based-fuel; Numerical study;

    机译：固体燃料炒具;石蜡基燃料;数值研究;

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