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http://dx.doi.org/10.6108/KSPE.2019.23.5.027

Analysis of Flow and Infrared Signature Characteristics according to UCAV Nozzle Shape  

Noh, Sooyoung (Department of Mechanical Engineering, Yonsei University)
Bae, Ji-Yeul (Department of Mechanical Engineering, Yonsei University)
Kim, Jihyuk (Department of Mechanical Engineering, Yonsei University)
Nam, Juyeong (Department of Mechanical Engineering, Yonsei University)
Jo, Hana (Agency for Defense Development)
Cho, Hyung Hee (Department of Mechanical Engineering, Yonsei University)
Publication Information
Journal of the Korean Society of Propulsion Engineers / v.23, no.5, 2019 , pp. 27-35 More about this Journal
Abstract
Stealth technology is a technique to avoid detection from detectors such as radar and infrared seekers. In particular, detection by infrared signature is more threatening because infrared missiles detect heat from the aircraft itself. Therefore, infrared stealth technology is essential for ensuring the survival of aircraft and unmanned combat aerial vehicles (UCAV). In this study, we analyzed aerodynamic and infrared stealth performance in relation to UCAV nozzle design. Based on simulation results, a double serpentine nozzle was effective in reducing the infrared signature because it could shield high-temperature components in the engine. In addition, we observed that the infrared signature was reduced at the turning position of the duct located at the rear part of the double serpentine nozzle.
Keywords
Unmanned combat aerial vehicle; Infrared Stealth; Double serpentine nozzle; Nozzle Design; Signature Reduction Method;
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