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The Lifting System of a PrandtlPlane, Part 3: Structures Made in Composites

In: Variational Analysis and Aerospace Engineering: Mathematical Challenges for Aerospace Design

Author

Listed:
  • Aldo Frediani

    (Università di Pisa)

  • Flavio Quattrone

    (ENSMA – Teleport 21)

  • Francesco Contini

    (Carbench International S.p.A.)

Abstract

In the first part of the paper, the solution of the wing structure of a 250-seat PrandtlPlane aircraft made in Aluminium alloy is discussed. The metallic solution is the result of a first-stage optimization process taking available stress, static aeroelasticity and flutter into account. The second stage of the optimization, consisting into a Finite Element analysis of the previous solution, is performed in order to check the reliability design process and to establish a reliable reference solution to be compared with a new one made in composites. In the second part of the present paper, the resulting wing system is designed using Carbon fibres with a proper sequence of laminae in order to obtain a perfectly isotropic material. The solution in composites is accomplished with an F.E. analysis, and the results are compared with the metal structural solution. Weight and stresses distributions are shown, and a comparison between the metal and the composite solution is performed. The weight saving of the solution made in composites appears to be potentially relevant.

Suggested Citation

  • Aldo Frediani & Flavio Quattrone & Francesco Contini, 2012. "The Lifting System of a PrandtlPlane, Part 3: Structures Made in Composites," Springer Optimization and Its Applications, in: Giuseppe Buttazzo & Aldo Frediani (ed.), Variational Analysis and Aerospace Engineering: Mathematical Challenges for Aerospace Design, edition 127, pages 269-288, Springer.
    • Handle: RePEc:spr:spochp:978-1-4614-2435-2_11
    DOI: 10.1007/978-1-4614-2435-2_11
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