Device with time and intensity controlled chemical composition of plume of jet engine used in e.g. guided missile, has substance of specific group metal, and showing spectra, introduced into fuel and/or plume

摘要

A device with time and intensity controlled chemical composition of plume of jet engine has substance in liquid form and/or solid form, and showing spectra upon UV irradiation and near infrared irradiation, introduced into fuel and/or plume. The substance is chosen from elements of group 1, 2 and 13 of periodic table.