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http://dx.doi.org/10.5139/JKSAS.2013.41.10.779

Computational Investigation of the Effect of UAV Engine Nozzle Configuration on Infrared Signature  

Kang, Dong-Woo (Department of Aerospace and System Engineering and Research Center for Aircraft Parts Technology, Gyeongsang National University)
Kim, June-Young (Department of Aerospace and System Engineering and Research Center for Aircraft Parts Technology, Gyeongsang National University)
Myong, Rho-Shin (Department of Aerospace and System Engineering and Research Center for Aircraft Parts Technology, Gyeongsang National University)
Kim, Won-Cheol (Agency for Defense Development)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.41, no.10, 2013 , pp. 779-787 More about this Journal
Abstract
The effects of various nozzle configurations on infrared signature are investigated for the purpose of analysing the infrared signature level of aircraft propulsion system. A virtual subsonic aircraft is selected and then a circular convergent nozzle, which meets the mission requirements, is designed. Convergent nozzles of different configurations are designed with different geometric profiles. Using a compressible Navier-Stokes-Fourier CFD code, an analysis of thermal flow field and nozzle surface temperature distribution is conducted. From the information of plume flow field and nozzle surface temperature distribution, IR signature of plume and nozzle surface is calculated through the narrow-band model and the RadThermIR code. Finally, qualitative information for IR signature reduction is obtained through the analysis of the effects of various nozzle configurations on IR signature.
Keywords
Infrared signature; UAV nozzle; Plume flow field;
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Times Cited By KSCI : 4  (Citation Analysis)
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