Joined-wing test bed UAV

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• 作者：Dimo Zafirov (1)
  Hristian Panayotov (1)
  
  1. Department of Transportation and Aviation Engineering ; Technical University-Sofia ; Plovdiv Branch ; 4000 ; 25 Tsanko Dyustabanov Str. ; Plovdiv ; Bulgaria
  
• 关键词：Joined wing ; UAV ; Design ; Test bed ; Studies
• 刊名：CEAS Aeronautical Journal
• 出版年：2015
• 出版时间：March 2015
• 年：2015
• 卷：6
• 期：1
• 页码：137-147
• 全文大小：2,417 KB
• 参考文献：1. Wolkovitch, J.: The joined wing: an overview. J Aircr 23, 161鈥?78 (1986) CrossRef
  2. Zafirov, D.: Joined wings thrust vectored UAV flight envelope. In: AIAA-2010-7509, AIAA Atmospheric Flight Mechanics Conference, Toronto, (2010)
  3. Zafirov, D.: Joined wing with ducted fan. UAV World Conference on Disc [CD-ROM], Exhibition Centre Frankfurt/Main, Frankfurt am Main (2009)
  4. Vaglienti, B., Hoag, R., Niculescu, M.: Piccolo User鈥檚 Guide v2.1.1. Cloud Cap Technology, Hood River, OR (2010)
  5. Zafirov D., Panayotov H.: Experimental results analysis of joined-wing aircrafts. In: Scientific Conference on Aeronautics, Automotive and Railway Engineering and Technologies BulTrans-2012, Sozopol, Bulgaria, 82鈥?5, (2009)
  6. Panayotov H., Zafirov D.: Aerodynamic optimization of joined-wing for unmanned aerial vehicle. J. Tech. Univ. Plovdiv, 鈥淔undamental Sciences and Applications鈥?13, 12鈥?9 (2006)
  7. Panayotov H.: Investigation of Dutch roll of a joined-wing aircraft. In: Scientific Conference on Aeronautics, Automotive and Railway Engineering and Technologies BulTrans-2012, Sozopol, Bulgaria, 26鈥?8, 84鈥?7, (2012)
  8. Zafirov D.: Mass moments of inertia of joined-wing unmanned aerial vehicle. Int. J. Res. Eng. Technol. 2, 2319鈥?163 (2013)
  
• 刊物主题：Aerospace Technology and Astronautics;
• 出版者：Springer Vienna
• ISSN：1869-5590

文摘

The future green aircraft will be required to meet demanding constraints, including weight reduction, high energy and aerodynamic efficiencies and high performance, to be compliant with pollutant emissions and noise generation regulations. The joined-wing concept is considered a trade-off variant for a green aircraft design with a lower cruise drag and lower structural weight. In addition, the requirements for low pollution and noise could be met using an all-electric aircraft. Hence, the aim of the present study is to design and produce a joined-wing unmanned aircraft test bed or flight laboratory. The basic design incorporates tip-joined front and rear wings with wing-tip vertical joints. The airframe is mainly composed of carbon and glass fibre composite materials. The power plant consists of an electric ducted fan, speed controller and Li-Po batteries. The aircraft integrates the Piccolo II Flight Management System, which offers a state-of-the-art navigation and flight data acquisition. Prior to production and flight testing of the prototype, aircraft aerodynamics and flight dynamics were analysed. Potential models with wind tunnel tests have been used to determine aircraft aerodynamics. One of the major problems found during simulation and flight experiments is the Dutch roll effect. This is thoroughly discussed in the paper. Some problems that concern autopilot tuning are also described.