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http://dx.doi.org/10.5139/JKSAS.2021.49.8.689

Characteristics of Flow Field and IR of Double Serpentine Nozzle Plume for Varying Cross Sectional Areas and Flight Conditions in UCAV  

Lee, Yu-Ryeol (School of Mechanical and Aerospace Engineering, Gyeongsang National University)
Lee, Ji-Won (School of Mechanical and Aerospace Engineering, Gyeongsang National University)
Shin, Chang-Min (School of Mechanical and Aerospace Engineering, Gyeongsang National University)
Myong, Rho-Shin (School of Mechanical and Aerospace Engineering, Gyeongsang National University)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.49, no.8, 2021 , pp. 689-698 More about this Journal
Abstract
The development of modern warfare detection technology is increasingly threatening the survivability of aircraft. Among them, IR-seeking missiles greatly affect the survivability of aircraft and are a main factor that reduces the success rate of aircraft missions. In order to increase aircraft survivability, studies on shape-modifying nozzles with added curvature are being actively conducted. In this study, we selected a double serpentine nozzle among shape-modifying nozzles to increase aircraft survivability. We then investigated the effects of the location of the maximum area change rate of the nozzle. It was confirmed that the location of the change rate of area affects the thrust and exit temperature of the nozzle. In addition, it was shown that the thrust penalty was reduced as the position of the change rate of the maximum area was located at the rear of the nozzle.
Keywords
IR Signature Suppression; Double Serpentine Nozzle; Thermal Flow Field; CFD;
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Times Cited By KSCI : 1  (Citation Analysis)
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