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| Effect of Embedded Skin Radiator on Aerodynamic Drag |
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| DOI：10.7643/issn.1672-9242.2023.06.005 |
| KeyWord:small aircraft skin heat dissipation aerodynamic drag coupling numerical simulation turbulence |
| Author | Institution |
| YE Yuan-peng |
The 29th Research Institute of CETC, Sichuan Chengdu , China |
| LI Ying-jie |
The 29th Research Institute of CETC, Sichuan Chengdu , China |
| HE Yu |
The 29th Research Institute of CETC, Sichuan Chengdu , China |
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| Abstract: |
| The work aims to investigate the effect of embedded skin radiator on aerodynamic drag of small aircraft, and explore the causes and affecting factors of aerodynamic drag. The inducement for the increase of aerodynamic resistance was theoretically analyzed with numerical simulation technology. In order to guarantee the balance between design indicators such as heat transfer of skin radiator and aerodynamic drag of aircraft, the effect of structural parameters such as skin radiator drain port radius, guide port radius and fin thickness on the aerodynamic drag and heat transfer of the aircraft was studied. The skin radiator was configured to provide heat sink for electronic equipment, leading to the increase of aerodynamic drag of small aircraft due to the additional pressure drag and frictional drag. The pressure drop drag can be reduced by increasing the drain port and the friction drag can be reduced by increasing the fin thickness, thus reducing the aerodynamic drag of small aircraft. Increasing the fin thickness can reduce the aerodynamic drag by more than 20%, and lead to a significant reduction in heat transfer performance. However, increasing the radius of the drain port and the guide port can promote the heat transfer to a certain extent. |
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