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Electric Propulsion Concepts for an Inverted Joined Wing Airplane Demonstrator

Author

Listed:
  • Cezary Galinski

    (Instytut Lotnictwa, 02-256 Warszawa, Poland)

  • Mateusz Lis

    (Instytut Lotnictwa, 02-256 Warszawa, Poland)

  • Jaroslaw Hajduk

    (Instytut Techniczny Wojsk Lotniczych, 01-494 Warszawa, Poland)

Abstract

One of the airplane design concepts that potentially allows for significantly increased efficiency, but has not yet been investigated thoroughly, is the inverted joined wing configuration, where the upper wing is positioned in front of the lower one. We performed wind tunnel and flight testing of a demonstrator of this concept, first by applying electrical propulsion to simplify wind tunnel testing, and then the same electrical-propulsion demonstrator performed several flights. As the chosen propulsion method proved to be too cumbersome for an intensive flight campaign and significant loss of battery performance was also observed, the electrical propulsion was then replaced by internal combustion propulsion in the second phase, involving longer-duration flight testing. Next we identified and analyzed two potentially beneficial modifications to the design tested: one involved shifting the center of gravity towards the aft, the other involved modifying the thrust vector position, both with the assumption that electric motors can be applied for propulsion. On this basis, the paper finishes with some conclusions concerning a new concept of electrical propulsion for an inverted joined wing design, combining two ideas: hybridization and distribution along the aft wing leading edge.

Suggested Citation

  • Cezary Galinski & Mateusz Lis & Jaroslaw Hajduk, 2017. "Electric Propulsion Concepts for an Inverted Joined Wing Airplane Demonstrator," Energies, MDPI, vol. 10(6), pages 1-21, May.
    • Handle: RePEc:gam:jeners:v:10:y:2017:i:6:p:762-:d:100160
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    References listed on IDEAS

    as
    1. Aldo Frediani & Vittorio Cipolla & Emanuele Rizzo, 2012. "The PrandtlPlane Configuration: Overview on Possible Applications to Civil Aviation," Springer Optimization and Its Applications, in: Giuseppe Buttazzo & Aldo Frediani (ed.), Variational Analysis and Aerospace Engineering: Mathematical Challenges for Aerospace Design, edition 127, pages 179-210, Springer.
    2. Luciano Demasi & Giovanni Monegato & Emanuele Rizzo & Rauno Cavallaro & Antonio Dipace, 2016. "Minimum Induced Drag Theorems for Joined Wings, Closed Systems, and Generic Biwings: Applications," Journal of Optimization Theory and Applications, Springer, vol. 169(1), pages 236-261, April.
    3. Luciano Demasi & Giovanni Monegato & Rauno Cavallaro, 2016. "Minimum Induced Drag Theorems for Nonplanar Systems and Closed Wings," Springer Optimization and Its Applications, in: Aldo Frediani & Bijan Mohammadi & Olivier Pironneau & Vittorio Cipolla (ed.), Variational Analysis and Aerospace Engineering, pages 191-217, Springer.
    4. Luciano Demasi & Giovanni Monegato & Antonio Dipace & Rauno Cavallaro, 2016. "Minimum Induced Drag Theorems for Joined Wings, Closed Systems, and Generic Biwings: Theory," Journal of Optimization Theory and Applications, Springer, vol. 169(1), pages 200-235, April.
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