Pyrotechnic composition effects on cinnamic acid smoke obscuration in the infrared and visible regions

摘要

The effect of altering the composition of cinnamic acid based smokes on thetransmission of the smoke in the visible and infrared regions was observed.The effect of the proportion of cinnamic acid (CA) in the composition, the fuelto oxidant ratio, and the inclusion of additional components in the compositionon the mass extinction coefficient is described. It is observed that thestandard CA composition is optimised for performance in the visible regioncompared to the mid-IR region in which performance is much poorer.