Binary Mixture Based on Epoxy for Spectrally Adapted Decoy Flare
محل انتشار: نشریه پیشرفته شیمی، دوره: 3، شماره: 5
سال انتشار: 1399
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 235
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شناسه ملی سند علمی:
JR_AJCS-3-5_012
تاریخ نمایه سازی: 22 دی 1399
چکیده مقاله:
Pyrotechnic decoy flares are the most widely used passive countermeasures for heat-seeking missiles. The development of (photoconductive) InSb-detectors with cut-off wavelength>6 μm has allowed two-color detectors working in both short (α) (1.8-2.5 μm) and mid-wave (β) (3.5-4.8 μm) bands. Thus, it is possible to determine the sensitivity ratio and to discriminate against fake targets. An attempt was made to change the spectral distribution of MTV (Magnesium-Teflon-Viton) decoy flare compositions by adding another composition to modify spectral emission based on aluminum, hexamine, potassium nitrate and ammonium perchlorate. Aluminum emission at 1.5 µm due to Al2O3. Hexamine used as flame expanders due and to provide cooling of the flame to transform radiation from a spot location to a burning zone. In this study, theoretical and experimental comparisons were made between various spectrally adapted flame compositions based on epoxy as a binder and the MTE flare which represented by sample (4). The first composition was Mg/Teflon/Epoxy (MTE) with percentage (60-80)% and the second adapted compositions with percentage (20-40)%. The temperature of the flame and the time of burning were measured using an inframetric radiometer. The radiant emission was determined using a computer program. The results show that sample (1) which contains 20% of the adapted compositions produces high flame temperature (1300 °C) and the highest radiant emittance 6.6 W/cm2/µm.
کلیدواژه ها:
نویسندگان
Ahmed Hawass
Technical research center, Cairo, Egypt
Mahmoud Awad
Technical research center, Cairo, Egypt
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