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Ground-based Study on Distribution of Fire Parameters and Installation of Fire Detectors in Space-confined Microgravity

机译:基于地面的火灾参数分布与空间微沉降中的火灾探测器的研究

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The manned spacecraft is a typically confined space in microgravity and it suffers severe fire risks. This paper studies on the distribution of the fire parameters in space-confined microgravity to find a more rational way to install the fire detectors. The experiments are carried out in the ground simulation experiment platform for fire based on the International Space Station. Based on the functional simulation principle, this paper maintains Gr (Grashof number) and increases Re (Reynolds number) to simulate microgravity environment in such a full-scale platform. The results show that Fire Detector 5 on the center of the side wall and Fire Detector 7 on the corner of the ceiling are the best installing locations for smoke detection. And, temperature detection is not appropriate in manned spacecraft. Namely, the way to install the fire detectors in manned spacecraft should be different from that in normal gravity.
机译:载人的航天器是微匍匐的典型空间,它受到严重的火灾风险。本文研究了空间局限性微重力的火灾参数分布,找到了安装火灾探测器的更合理的方式。实验在基于国际空间站的地面模拟实验平台中进行。基于功能仿真原理,本文维护了GR(GRASHOF编号)并增加了RE(雷诺数)来模拟这种全尺度平台中的微匍匐环境。结果表明,在天花板拐角处的侧壁和火力检测器7的中心上的火灾探测器5是用于烟雾检测的最佳安装位置。并且,温度检测在载人的航天器中不合适。即,在载人的航天器中安装火灾探测器的方式应与正常重力不同。

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