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J. KIMS Technol > Volume 20(2); 2017 > Article
Journal of the Korea Institute of Military Science and Technology 2017;20(2):246-254.
DOI: https://doi.org/10.9766/KIMST.2017.20.2.246   
A Numerical Study on the Cooling Characteristics of Seeker Windows for Selecting Efficient Cooling Method
Manshik Kim, Dong Min Lee
The 1st Research and Development Institute, Agency for Defense Development
효율적인 냉각 방식 선정을 위한 탐색창 냉각 특성 해석 연구
김만식, 이동민
국방과학연구소 제1기술연구본부
Abstract
In this paper, cooling characteristics of seeker windows were examined using the Sinda-Fluint software. Various cooling methods were considered to satisfy the limit temperature of the cooled seeker window which would be exposed to excessive aerodynamic heating conditions by varying coolant type and mass flow rate of coolant. Due to the enhanced heat transfer between the coolant and the seeker window, internally cooled seeker window which uses liquid coolant showed lowered temperature distribution in the window compared to internally cooled seeker window which uses gas coolant. External film cooled seeker window also showed good cooling characteristics because it reduces the convective heat flux to the seeker window fundamentally. It was also confirmed that the temperature and the temperature gradient of seeker windows were significantly reduced for the cases which use external film cooling additionally to the gas and liquid cooled seeker window.
Key Words: Seeker Window, Film Cooling, Internally Cooled Seeker Window


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