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Title: Comparison of box-wing and conventional aircraft mission performance using multidisciplinary analysis and optimization

Box-wing aircraft designs have the potential to achieve significant reductions in fuel consumption. Closed non-planar wing designs have been shown to reduce induced drag and the statically indeterminate wing structure can lead to reduced wing weight. In addition, the streamwise separation of the two main wings can provide the moments necessary for static stability and control, eliminating the weight and aerodynamic drag of a horizontal tail. Proper assessment of the disciplinary interactions in box-wing designs is essential to determine any realistic performance benefits arising from the use of such a configuration. This study analyzes both box-wing and conventional aircraft designed for representative regional-jet missions. A preliminary parametric investigation shows a lift-to-drag ratio advantage for box-wing designs, while a more detailed multidisciplinary study indicates that the requirement to carry the mission fuel in the wings leads to an increase of between 5% and 1% in total fuel burn compared to conventional designs. Furthermore, the multidisciplinary study identified operating conditions where the box-wing can have superior performance to conventional aircraft despite the fuel volume constraint.
ORCiD logo [1] ;  [2]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. Royal Military College of Canada, Kingston, ON (Canada)
Publication Date:
Report Number(s):
Journal ID: ISSN 1270-9638
Grant/Contract Number:
Accepted Manuscript
Journal Name:
Aerospace Science and Technology
Additional Journal Information:
Journal Name: Aerospace Science and Technology; Journal ID: ISSN 1270-9638
Research Org:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org:
Canadian Department of Defence, Canadian Natural Sciences and Engineering Research Council; USDOE
Country of Publication:
United States
42 ENGINEERING; aircraft design; nonplanar wing; box-wing; multidisciplinary optimization; unconventional aircraft
OSTI Identifier: