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红外光谱的铝氟碳聚合物组成的热签名喷气发动机

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太阳耀斑是精力充沛的材料,这能产生热签名可以干扰红外制导导弹。耀斑热签名应该类似于飞机但强度较高;这个签名取决于放热反应以及燃烧的化学性质的产品。铝是最常见的活性金属燃料使用的能量系统,它可以提供高热量输出(32000 J / g)以及优良的化学稳定性。在这项研究中,不同的耀斑配方基于铝作为燃料,氟碳聚合物(聚四氟乙烯)作为氧化剂,和氟橡胶粘结剂(燃料比例从40:70 wt %)是由造粒和随后的紧迫。开发配方的光谱性能评估飞机喷气发动机的热特征使用(FT-MIR 2 - 6μm)分光光度计。喷气发动机的热特征是具有两个特征峰α(2 - 3μm)和β(3 - 5μm)乐队;这个签名是热喷嘴与黑体发射的690°C。发达耀斑提供热特征相似,但是更高的强度。铝/聚四氟乙烯/氟橡胶(ATV)耀斑,以50 wt %,提供增加乐队α和β的强度分别为6和1.5倍。 The developed ATV flare offered characteristic intensity ratio Ɵ (Iα/Iβ) (the main spectral parameter) of 0.73; this value was found to be in good accordance with literature. Quantification of infrared emitting species as well as combustion temperature was conducted using the ICT thermodynamic code. ATV flare (50 wt% Al) offered the highest percentage (78.1 wt%) of AlF the main IR emitting species as well as 12.1 wt% of C soot which is an ideal black body emitter. This is manuscript would open the route for the development of flares with tailored spectral performance.

Amir Elsaidy Mohamed卡塞姆Hesham Tantawy, Sherif Elbasuney和Gaber Zaky M

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