• Title/Summary/Keyword: solar powered UAV

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A Comparison Study of Wing Leading Edge Skin Models in Small Composite Solar-Powered UAVs (소형 복합재 태양광 무인기 윙 리딩에지스킨 모델 비교 연구)

  • Yang, Yong-Man;Kim, Yong-Ha;Kim, Jong-Hwan;Kim, Young-In;Lee, Soo-Yong
    • Journal of the Computational Structural Engineering Institute of Korea
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    • v.30 no.5
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    • pp.445-452
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    • 2017
  • The wing leading edge skin in this research is an essential structural factor for improving wings' aeromechanical functions, protecting the interior elements of the wings from external damage including birds, and navigating planes safely. The study compared and reviewed models manufactured for optimal light-weight wings of composite UAVs. It compared and investigated displacement forms of torsion loads through finite element analysis using MSC. Patran/Nastran. By confirming the improvement of light-weighting performance according to lamination type, thickness change and shape through torsion strength tests of each model, the research suggested the optimal light-weight wing leading edge skin for small composite UAVs.

A study on the Power Characteristics of Hybrid Power System by Active Power Management (능동전력제어에 의한 하이브리드 동력시스템의 출력특성 연구)

  • Lee, Bohwa;Park, Poomin
    • Journal of the Korean Society for Aeronautical & Space Sciences
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    • v.44 no.9
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    • pp.833-841
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    • 2016
  • The 200 W electrically powered unmanned aerial vehicle, which is studied in this research, uses solar cells, a fuel cell and batteries as the main power source simultaneously. The output of each power source performs power control for each power source by the active power control method so that an adequate capacity of the battery could be maintained while limiting the maximum output of the fuel cell. The output variation for each power source under the active power control method was identified through an integrated ground test. In addition, the effect of limiting the maximum output of the fuel cell on the output variation of the entire system was experimentally identified, and it was confirmed that the adequate maximum output value of the fuel cell for preventing the overdischarge of six series-connected, small size batteries for fuel cell systems is 150 W.