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Rocket plume tomography of combustion species

机译:燃烧物种的火箭羽流层析成像

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摘要

Interest in accurate detection and targeting of aggressor missiles has received considerable interest with the national priority of developing a missile defense system. Understanding the thermal signatures of the exhaust plumes of such missiles is key to accomplishing that mission. Before signature models can be precisely developed for specific rockets, the radiation of the molecular or combustion species within those plumes must be accurately predicted. A combination translation / rotation scanning diagnostic technique has been developed to map the combustion species of a rocket plume and characterize its radiation properties. Using new infrared spectrometer and fiber optic cable technology to transmit the signal spectrum of interest, the custom designed mechanism can sweep through two dimensions of a steady-state rocket exhaust. A glow bar, or blackbody simulator, is shuttered on the opposite side of the plume, allowing the spectrometer to measure both the emission and absorption spectra. This thesis demonstrated the first time use of fiber optic cable to transmit infrared emission / absorption (E/A) spectra from a rocket plume to an infrared detector. This new fiber optic configuration allows for rapid translation and rotation around the rocket plume, establishing the capability for rapid spatial characterization of the combustion species present. Experimental results may then be compared to DoD rocket plume model predictions to highlight areas for improvement.
机译:对精确检测和瞄准攻击性导弹的兴趣已经引起了人们的极大兴趣,这是发展导弹防御系统的国家优先事项。了解此类导弹排气羽流的热信号是完成该任务的关键。在为特定火箭精确开发签名模型之前,必须准确预测这些羽流中分子或燃烧物质的辐射。已经开发了组合的平移/旋转扫描诊断技术来绘制火箭羽流的燃烧种类并表征其辐射特性。使用新的红外光谱仪和光纤电缆技术传输感兴趣的信号光谱,定制设计的机制可以扫过稳态火箭废气的二维空间。将辉光棒或黑体模拟器关闭在羽流的另一侧,从而使光谱仪可以测量发射光谱和吸收光谱。本文证明了光缆首次用于将火箭羽流的红外发射/吸收(E / A)光谱传输到红外探测器。这种新的光纤配置允许围绕火箭羽流快速平移和旋转,从而建立了对存在的燃烧物质进行快速空间表征的能力。然后可以将实验结果与DoD火箭羽流模型预测进行比较,以突出显示需要改进的地方。

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    Kutrieb Joshua M.;

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  • 年度 2001
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