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

Bishara, Majeed GND; Horst, Peter GND; Madhusoodanan, Hinesh; Brod, Martin; Daum, Benedikt ORCID; Rolfes, Raimund ORCID

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.

Vorschau

Zitieren

Zitierform:

Bishara, Majeed / Horst, Peter / Madhusoodanan, Hinesh / et al: A Structural Design Concept for a Multi-Shell Blended Wing Body with Laminar Flow Control. Braunschweig 2018.

Zugriffsstatistik

Gesamt:
Volltextzugriffe:
Metadatenansicht:
12 Monate:
Volltextzugriffe:
Metadatenansicht:

Details anzeigen

Rechte

Nutzung und Vervielfältigung:

Export