30 October 2007 Remote sensing of aircraft exhaust temperature and composition by passive Fourier Transform Infrared (FTIR)
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Abstract
The scanning infrared gas imaging system (SIGIS-HR) and the quantitative gas analysis software MAPS (Multicomponent Air Pollution Software) are applied to investigate the spatial distribution of the temperature and gas concentrations (CO, NO) within the plume of aircraft engines at airports. The system integrates an infrared camera also. It is used for the localisation of the hot source that additionally suggests the best measurement position of the SIGIS-HR. The application of emission FTIR spectrometry for the measurement of temperature and gas emission index of CO and NO is presented for the exhaust of a small turbojet based on a helicopter turbine. In these measurements the emitted infrared radiation from the exhaust gas stream was collected by the SIGIS-HR at different spectral resolution (56 cm-1 and 0.2 cm-1). The software MAPS includes the Instrumental Line Shape (ILS) of the OPAG- 22 FTIR spectrometer obtained by active gas cell measurements and ILS modelling. The rough concept of the system will be presented and operational applications will be discussed. The results of the investigation of the temperature and gas concentrations (CO, NO) within the aircraft engine plumes will be shown. The limitations and of the systems will be discussed.
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Edgar Flores-Jardines, Edgar Flores-Jardines, Klaus Schäfer, Klaus Schäfer, John Black, John Black, Roland Harig, Roland Harig, Carsten Jahn, Carsten Jahn, } "Remote sensing of aircraft exhaust temperature and composition by passive Fourier Transform Infrared (FTIR)", Proc. SPIE 6745, Remote Sensing of Clouds and the Atmosphere XII, 67451Q (30 October 2007); doi: 10.1117/12.738837; https://doi.org/10.1117/12.738837
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