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J. KIMS Technol > Volume 17(2); 2014 > Article
Journal of the Korea Institute of Military Science and Technology 2014;17(2):197-203.
DOI: https://doi.org/10.9766/KIMST.2014.17.2.197   
An Investigation of Radiation Heat Transfer on The Horizontal Fin of An External Fuel Tank by Flame of a Flying Flare
Daehan Jung, Chihang Kang, Sitae Kim
Korea Air Force Academy
날아가는 섬광탄이 연료탱크 수평핀에 미치는 복사열전달 연구
정대한, 강치행, 김시태
공군사관학교
Abstract
In this paper, the effect of unsteady radiation on the horizontal fin of an external fuel tank by flame of a flying flare was analysed to see the temperature increase of the fin and the thermal impact on the fin. Radiation between two surfaces was calculated using the concept of radiation resistance of surface and space including radiation, irradiation and shape factor for two flying trajectories of a flare, maximum temperature of 2200 K, emissivity of 0.95, flying velocity of 30 m/s, and thermal surface area of $0.01m^2$. The result shows that the temperature increase of the fin is 0.236 K, and the thermal effect on the fin is ignorable. And it was found that temperature is increased a little because small amount of heat energy can be radiated due to the short exposure time to the heat source.
Key Words: Flare, External Fuel Tank, Radiation Heat Transfer, Diffuse Gray, Shape Factor, Heat Flow, Radiant Intensity
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