Abstract
A computational model is developed for the regression rate of flare surface area to compute the IR intensity versus burn time for various configurations of flare pellets. 10 g of MTV composition filled in the diameter (Dia) 20 mm tube was fired to obtain Linear Burn Rate (LBR) and IR intensity in 1.8–2.6 µm and 3–5 µm waveband using Dual band radiometer. The calorific value in the Oxygen (O2) atmosphere was measured for the composition using the bomb calorimeter. Model I predicts the averageemissivity of two different LBR pyrotechnic MTV compositions in two wavebands.Using computed data, Model IIcalculatesthe IR intensityversus burn time in each waveband for configurations of flare pellets ofcircular (Dia 26 and Dia 36 mm), square(1″×1″×8″) and rectangular (2″×”1″×8″)using shrinking core model coupled with IR intensity equations. Radiometricdata were generated for the two compositions. The calculated data were found to be in close agreement with that of the radiometric data for peak IR intensity and burn timefor various flare configurations. Radiometric studies along with computational prediction for modified MTV composition have been carried out for various configurations. The predicted data from the computational model has been supported with the prediction of the species chemical composition at equilibrium using the REAL Thermochemical code.
Published Version
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