Imaging Fourier transform spectrometry of jet engine exhaust with the telops FIRST-MWE
Document Type
Conference Proceeding
Publication Date
3-7-2009
Abstract
The Field-portable Imaging Radiometric Spectrometer Technology Midwave Extended (FIRSTMWE) system developed by Telops, Inc. was used to capture hyperspectral imagery of turbojet engine exhaust. The FIRST-MWE is a Michelson interferometer coupled to a 320 256 Indium Antimonide (InSb) focal plane array with instantaneous field of view (IFOV) of 0.35 mrad. Exhaust from a diesel-fueled Turbine Technologies, Ltd. SR-30 turbojet engine was imaged at three modes of operation from a side-plume vantage point close to the engine. Temporally-averaged spectral data featured strong CO2 emission near 2200-2450 cm-1. A simple radiative transfer model was used to produce spatially-resolved maps of the temperature and relative CO2 concentration. The model assumed an optically-thin plume that was homogeneous along each pixel's line-of-sight. The Carbon Dioxide Spectroscopic Databank was used to compute molecular cross-sections used in fitting the temporally-averaged spectra.
Source Publication
2009 IEEE Aerospace conference
Recommended Citation
K. C. Bradley, S. Bowen, K. C. Gross, M. A. Marciniak and G. P. Perram, "Imaging Fourier transform spectrometry of jet engine exhaust with the telops FIRST-MWE," 2009 IEEE Aerospace conference, Big Sky, MT, USA, 2009, pp. 1-8, doi: 10.1109/AERO.2009.4839444.
Comments
Copyright © 2009, IEEE
Co-author K. Bradley was an AFIT PhD student at the time of this paper. (AFIT-DS-ENP-09-S01, December 2009)
Co-author S. Bowen was an AFIT graduate student (M.S.) at the time of this paper. (AFIT-GAP-ENP-09-M02, March 2009)