A five-band recording spectroradiometer

Abstract

In a project 1 undertaken to determine the properties of flames that might be utilized in the detection of accidental fires in aircraft engine compartments, an instrument was constructed to measure and record the radiant energy emitted by flames in five separate wavelength regions from 0.23 to 2.5 microns. The radiant intensity of several types of hydrocarbon flames was determined in each spectral region. The frequency distribution of the fluc tuations in the radiant intensity (flicker) was also determined.