15 December 1998 Detection of soot particles in gas turbine engine combustion gases using nonintrusive FTIR spectroscopy
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Abstract
Fourier transform IR (FTIR) spectroscopy for making non- intrusive measurements of gas turbine exhaust gases and laser induced incandescence for measuring soot content are being evaluated in EU Brite EuRam project AEROJET. Soot concentrations in modern aero-engine exhausts are very low with mean particle sizes < 100 nm. The standard extractive filter paper soot measurement gives results expressed in terms of SAE smoke number, typically < 10 SAE for modern engines.
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Moira Hilton, Moira Hilton, John D. Black, John D. Black, "Detection of soot particles in gas turbine engine combustion gases using nonintrusive FTIR spectroscopy", Proc. SPIE 3493, Spectroscopic Atmospheric Environmental Monitoring Techniques, (15 December 1998); doi: 10.1117/12.332660; https://doi.org/10.1117/12.332660
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