Infrared characterization of jet engine exhaust plumes

Edward Lamar Nelson; J. Robert Mahan; Jeffrey A. Turk; Robert R. Hardman; Larry D. Birckelbaw; Paul A. Gelhausen

doi:10.1117/12.151063

13 August 1993 Infrared characterization of jet engine exhaust plumes

Edward Lamar Nelson, J. Robert Mahan, Jeffrey A. Turk, Robert R. Hardman, Larry D. Birckelbaw, Paul A. Gelhausen

Proceedings Volume 1967, Characterization, Propagation, and Simulation of Sources and Backgrounds III; (1993) https://doi.org/10.1117/12.151063
Event: Optical Engineering and Photonics in Aerospace Sensing, 1993, Orlando, FL, United States

Abstract

The focus of current research is the measurement, modeling, and simulation of the spatial, temporal and spectral behavior of gaseous radiation from a jet engine exhaust plume. Infrared imaging using a scanning infrared camera has been used as a flow visualization technique. Also, an infrared band model code has been developed to relate field variables to infrared emission. The model has been validated by comparisons with other infrared band models and by comparisons with experimental data. Finally, a free-jet apparatus has been constructed based on an auxiliary power unit, and a computer code has been developed for converting the experimentally measured exhaust plume temperature distribution to the corresponding infrared image. These efforts represent work in progress. The goals of this research are to better understand infrared imaging of exhaust plumes, to correctly model the infrared emission from exhaust plumes given knowledge of the temperature, pressure, and species distribution of the flow field, and finally to use this model to validate CFD codes through comparison of predicted and observed infrared images.

Citation Download Citation

Edward Lamar Nelson, J. Robert Mahan, Jeffrey A. Turk, Robert R. Hardman, Larry D. Birckelbaw, and Paul A. Gelhausen "Infrared characterization of jet engine exhaust plumes", Proc. SPIE 1967, Characterization, Propagation, and Simulation of Sources and Backgrounds III, (13 August 1993); https://doi.org/10.1117/12.151063

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