Midwave Infrared Imaging Fourier Transform Spectrometry of Combustion Plumes
Abstract
A midwave infrared (MWIR) imaging Fourier transform spectrometer (IFTS) collected hyperspectral imagery (HSI) of combustion plumes. Exhaust data from a small turbojet engine burning diesel at 300 cc/min was collected at 1/cm. A single-temperature plume model gave fitted temperatures of 811 +/- 1.5 K and 543 +/- 1.6 K near thermocouple probes measuring 719 K and 522 K. Data from a coal-burning stack at 0.25/cm resolution at a range of 600 m featured emission from NO, CO, CO2, SO2, and HCl. Fitted temperature close to the stack was 401 +/- 0.36 K, compared to an in-stack measurement of 406 K, and concentrations of NO, CO2, and SO2 were 140 +/- 1 ppmV, 110,400 +/- 950 ppmV, and 382 +/- 4 ppmV compared to in situ measurements of 120 ppmV (NOx), 94,000 ppmV, and 382 ppmV. SO2 and HCl concentrations of 19 +/- 0.2 ppmV and 111 +/- 1 ppmV are reported. A deployment to Dugway Proving Grounds, UT to collect HSI of chem/bio agent simulants resulted in detection of methyl salicilate from a stack release and explosive detonation, but spectral identification was not possible due to weak signal strength.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 2009
- Accession Number
- ADA510984
Entities
People
- Kenneth C. Bradley
Organizations
- Air Force Institute of Technology