A structural design concept for a multi-shell blended wing body with laminar flow control

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Bishara, M.; Horst, P.; Madhusoodanan, H.; Brod, M.; Daum, B. et al.: A structural design concept for a multi-shell blended wing body with laminar flow control. In: Energies 11 (2018), Nr. 2, 383. DOI: https://doi.org/10.3390/en11020383

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Sum total of downloads: 226




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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.
License of this version: CC BY 4.0 Unported
Document Type: Article
Publishing status: publishedVersion
Issue Date: 2018
Appears in Collections:Fakultät für Bauingenieurwesen und Geodäsie

distribution of downloads over the selected time period:

downloads by country:

pos. country downloads
total perc.
1 image of flag of Germany Germany 147 65.04%
2 image of flag of United States United States 28 12.39%
3 image of flag of China China 18 7.96%
4 image of flag of India India 7 3.10%
5 image of flag of No geo information available No geo information available 2 0.88%
6 image of flag of Malaysia Malaysia 2 0.88%
7 image of flag of Italy Italy 2 0.88%
8 image of flag of Iran, Islamic Republic of Iran, Islamic Republic of 2 0.88%
9 image of flag of United Kingdom United Kingdom 2 0.88%
10 image of flag of Spain Spain 2 0.88%
    other countries 14 6.19%

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