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http://dx.doi.org/10.5139/JKSAS.2014.42.8.640

Spectral Infrared Signature Analysis of the Aircraft Exhaust Plume  

Gu, Bonchan (Division of Aerospace Engineering, Korea Advanced Institute of Science and Technology)
Baek, Seung Wook (Division of Aerospace Engineering, Korea Advanced Institute of Science and Technology)
Yi, Kyung Joo (Korea Institute of Nuclear Safety)
Kim, Man Young (Department of Aerospace Engineering, Chonbuk National University)
Kim, Won Cheol (Agency for Defense Development)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.42, no.8, 2014 , pp. 640-647 More about this Journal
Abstract
Infrared signature of aircraft exhaust plume is the critical factor for aircraft survivability. To improve the military aircraft survivability, the accurate prediction of infrared signature for the propulsion system is needed. The numerical analysis of thermal fluid field for nozzle inflow, free stream flow, and plume region is conducted by using the in-house code. Weighted Sum of Gray Gases Model based on Narrow Band with regrouping is adopted to calculate the spectral infrared signature emitted from aircraft exhaust plume. The accuracy and reliability of the developed code are validated in the one-dimensional band model. It is found that the infrared radiant intensity is relatively more strong in the plume through the analysis, the results show the different characteristic of the spectral infrared signature along the temperature, the partial pressure, and the species distribution. The continuous spectral radiant intensity is shown near the nozzle exit due to the emission from the nozzle wall.
Keywords
Infrared signature; WSGGM-NB-Regroup; Spectral Radiant Intensity; Plume; Non-gray gas;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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