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A Structural Design Concept for a Multi-Shell Blended Wing Body with Laminar Flow Control

Author

Listed:
  • Majeed Bishara

    (Aeronautics Research Center Niedersachsen (NFL), TU Braunschweig, Hermann-Blenk-Straße 42, 38108 Braunschweig, Germany)

  • Peter Horst

    (Institute of Aircraft Design and Lightweight Structures, TU Braunschweig, Hermann-Blenk-Straße 35, 38108 Braunschweig, Germany)

  • Hinesh Madhusoodanan

    (Institute of Structural Analysis, Leibniz University of Hannover, Appelstraße 9A, 30167 Hannover, Germany)

  • Martin Brod

    (Institute of Structural Analysis, Leibniz University of Hannover, Appelstraße 9A, 30167 Hannover, Germany)

  • Benedikt Daum

    (Institute of Structural Analysis, Leibniz University of Hannover, Appelstraße 9A, 30167 Hannover, Germany)

  • Raimund Rolfes

    (Institute of Structural Analysis, Leibniz University of Hannover, Appelstraße 9A, 30167 Hannover, Germany)

Abstract

Static and fatigue analyses are presented for a new blended wing body (BWB) fuselage concept considering laminar flow control (LFC) by boundary layer suction in order to reduce the aerodynamic drag. BWB aircraft design concepts profit from a structurally beneficial distribution of lift and weight and allow a better utilization of interior space over conventional layouts. A structurally efficient design concept for the pressurized BWB cabin is a vaulted layout that is, however, aerodynamically disadvantageous. A suitable remedy is a multi-shell design concept with a separate outer skin. The synergetic combination of such a multi-shell BWB fuselage with a LFC via perforation of the outer skin to attain a drag reduction appears promising. In this work, two relevant structural design aspects are considered. First, a numerical model for a ribbed double-shell design of a fuselage segment is analyzed. Second, fatigue aspects of the perforation in the outer skin are investigated. A design making use of controlled fiber orientation is proposed for the perforated skin. The fatigue behavior is compared to perforation methods with conventional fiber topologies and to configurations without perforations.

Suggested Citation

  • Majeed Bishara & Peter Horst & Hinesh Madhusoodanan & Martin Brod & Benedikt Daum & Raimund Rolfes, 2018. "A Structural Design Concept for a Multi-Shell Blended Wing Body with Laminar Flow Control," Energies, MDPI, vol. 11(2), pages 1-21, February.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:2:p:383-:d:130615
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    References listed on IDEAS

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    1. Nils Beck & Tim Landa & Arne Seitz & Loek Boermans & Yaolong Liu & Rolf Radespiel, 2018. "Drag Reduction by Laminar Flow Control," Energies, MDPI, vol. 11(1), pages 1-28, January.
    2. Yaolong Liu & Ali Elham & Peter Horst & Martin Hepperle, 2018. "Exploring Vehicle Level Benefits of Revolutionary Technology Progress via Aircraft Design and Optimization," Energies, MDPI, vol. 11(1), pages 1-22, January.
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    Cited by:

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