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http://dx.doi.org/10.6108/KSPE.2017.21.5.029

A Numerical Study On Thermal Characteristics of HALE UAV Solar Arrays  

Song, Ji-Han (Agency for Defense Development)
Nam, Yoonkwang (Agency for Defense Development)
Publication Information
Journal of the Korean Society of Propulsion Engineers / v.21, no.5, 2017 , pp. 29-36 More about this Journal
Abstract
In this study, a numerical analysis is made of the fluid flow and heat transfer characteristics in the solar arrays of HALE (High Altitude Lond Endurance) UAV. In the stratosphere where UAV operates, high level solar radiation is induced, heat transfer decreases due to natural convection and forced convection is dominated by ambient flow. In order to predict the solar array temperature range in this environment condition, the conjugate heat transfer analysis was carried out for the solar arrays on the main wing. The investigation focused on the temperature distribution of solar array and heat transfer characteristics according to influence of solar energy, flight condition as vehicle speed, air density, temperature.
Keywords
High Altitude Long Endurance; Solar Array; Solar Radiation; Heat Trasfer;
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Times Cited By KSCI : 3  (Citation Analysis)
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1 "Airbus," World Wide Web Location http://defence.airbus.com/portfolio/uav/zephyr, 2015.
2 "NASA," World Wide Web location https://www.nasa.gov/centers/dryden/history/pastprojects/Erast/pathfinder.html, 2010.
3 Montagnier, O. and Bovet, L., "Optimization of Solar-Powered High Altitude Long Endurance UAV," 27th International Congress of The Aeronautical Science, Nice, France, Sep. 2010.
4 Colozza, A.J., "Effect of Power System Technology and Mission Requirements on High Altitude Long Endurance Aircraft," NASA CR-194455, 1994.
5 Ahn, J., "Conceptual Design of a Solar-Powered High Altitude Long Endurance(HALE) UAV and Short Term Progresses in Solar Cell and Secondary Battery," 2012 KSAS conference, Jeju, Korea, pp. 750-754, Nov. 2012.
6 Nam, Y.G. and Park, T.S., "A Research for Energy Harvest/Distribution/Control of HALE UAV based on the Solar Energy," Journal of the Korean Society of Propulsion Engineers, Vol. 19, No. 4, pp. 77-84, 2015.   DOI
7 Park, P.M., Kim, K.B. and Cha, B.J., "Flight Test of Hybrid Propulsion System for Electrically Powered UAV," 2012 The Korean Society of Propulsion Engineers conference, Yeosu, Korea, pp. 382-387, Nov. 2012.
8 Hwang, S.J., Kim. S.G. and Lee, Y.G., "Developing High Altitude Long Endurance (HALE) Solar-powered Unmanned Aerial Vehicle (UAV)," Journal of The Society for Aerospace System Engineering, Vol. 10, No. 1, pp. 59-65, 2016.
9 Jin, J.S., Yu, S.P., Kim, Y.H., Jeong, S.D., Seo, Y.S. and Jeong, N.J., "Improving the effectiveness of a photovoltaic system by cooling on the surface of photovoltaic cells," The Korean Society For New And Renewable Energy conference, Jeju, Korea, pp. 183-186, Jun. 2009.
10 Schwingshackl. C. et al., "Wind effect on PV module temperature : Analysis of different techniques for an accurate estimation," Energy Procedia 40, pp. 77-86, 2013.   DOI
11 Cho, Y.J., Choi, G.Y., Hah, J.C., Lee, H.C. and Cho, C.H., "A study on the meteorological application of microwave radiometer observation onboard high-altitude long-endurance UAV(Unmanned Aerial Vehicle)," 2014 The Korean Society For Aeronautical And Space Sciences conference, Jeju, Korea, pp. 864-867. Nov. 2014.
12 SUNPOWER Inc., C60 Data sheet.
13 ANSYS Inc., ANSYS FLUENT 14.0 Theory Guide, 2011.
14 Han, H.S., Kim, C.E. and Hwang, H.Y., "Initial Sizing of a Glider Type High Altitude Long Endurance Unmanned Aerial Vehicle Using Alternative Energy," Journal of The Korean Society For Aeronautical And Space Sciences, Vol. 42, No. 1., pp. 47-57, 2014.   DOI
15 Cengel, Heat Transfer : A Practical Approach, 2nd Edition, Mc-Graw Hill Education, Columbus, G.A., U.S.A, 2003.