150m급 스텔스 구축함의 도료 특성에 따른 적외선 신호 분석

Infrared stealth performance is one of the essential technologies required to enhance the survivability of naval ships. Infrared signatures are generated by internal sources, such as engine exhaust gases, and external sources, including the hull surfaces heated by solar radiation. Previous studies have focused primarily on seawater cooling systems(washdown) for reducing infrared signatures. On the other hand, the application of specialized coatings has emerged as a promising alternative because of potential radar performance degradation in integrated masts. This study analyzed the infrared signature of a Type 45 destroyer by applying five different paints with varying emissivity, reflectivity, and solar absorptivity values to the mast surface. The analysis focused on the surface temperature of the mast and resulting infrared signatures using ShipIR/NTCS Version 4.2, a NATO-standard and highly reliable simulation tool. The simulation was conducted under environmental conditions that represent daytime in January in the East Sea, where infrared contrast is maximized. As a result, higher infrared signals were observed compared to the standard ship, which was equipped with infrared stealth features. In addition, the lower solar absorptivity was associated with reduced infrared emissions in the mid-wave and long-wave infrared bands, while higher solar absorptivity resulted in increased infrared signature levels.