Combustion, obscurant and infrared emission characteristics of smoke composition based on red phosphorus and Mg-Al alloys
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Infrared emission; Obscurant; Smokescreen; Red phosphorus, Mg-Al alloy.Abstract
Infrared-obscurant formulations based on red phosphorus are widely utilized to protect military vehicles from laser and infrared guidance weapons. This work evaluates the influence of metal on the combustion, obscurant, and emission characteristics of red phosphorus-based smoke compositions. The research results demonstrated that the presence of Mg-Al alloy increased the combustion characteristics (such as combustion temperature, heat of combustion, burning rate, etc.) and infrared radiance in the wavelength range of 3 - 5 µm. However, this also reduces the 1.064 µm laser attenuation ability and the emission radiance in the wavelength range of 8 - 14 µm of the smokescreen compared to the metal-free composition. These findings provide insights into optimizing smoke composition, which has a high attenuation capability to 1.064 µm laser radiation and strong infrared emission in both wavelength ranges of 3 - 5 µm and 8 - 14 µm.
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