Automatic differentiation for more efficient multidisciplinary design analysis and optimization

1996 ◽  
Author(s):  
B. Wujek ◽  
J. Renaud
2010 ◽  
Vol 132 (8) ◽  
Author(s):  
Donald G. Saari

All areas of engineering have a need to find appropriate aggregated outcomes for systems. Issues range from decision problems, “divide-and-conquer” approaches that include aspects of multidisciplinary design optimization and the effects of a division of labor for, perhaps, a design project, the inefficiencies that can accompany multidisciplinary projects involving, say, design, manufacturing, and sales, to the complexities of multiscale design, analysis, and even nanotechnology. But as shown, if the adopted approach (e.g., management choices, divide-and-conquer methodology, modeling of the biology/physics, decision rule, etc.) satisfies particular accepted practices, then certain complexities and inefficiencies must be anticipated. A disturbing corollary is that even should “success” appear to have been achieved with an approach that satisfies these conditions, it need not be as firm as expected. Ways to improve methodologies must avoid the specified conditions.


2018 ◽  
Vol 1037 ◽  
pp. 042004 ◽  
Author(s):  
S Sanchez Perez-Moreno ◽  
K Dykes ◽  
K O Merz ◽  
M B Zaaijer

2018 ◽  
Vol 233 ◽  
pp. 00014 ◽  
Author(s):  
Alessandro Sgueglia ◽  
Peter Schmollgruber ◽  
Emmanuel Benard ◽  
Nathalie Bartoli ◽  
Joseph Morlier

The aviation's goal for the next decades is to drastically reduce emissions, but to achieve this goal a breakdown in aircraft design has to be considered. One of the most promising concepts is the Blended Wing- Body, which integrates aerodynamics, propulsion and structure, and has a better aerodynamics efficiency, thanks to the reduction of the wetted surfaces. In this work the feasibility of a short/medium range BWB with 150 passengers (A320 Neo type aircraft, Entry Into Service 2035) is studied, considering different disciplines into the sizing process. The design loop has been reviewed to consider the unconventional concept. Also certification aspects have been taken into account in an off-design analysis. To evaluate the advantages of the proposed concept, it has been compared with an aircraft of the same class, the A320 Neo, resized to match the EIS2035 hypothesis: results show that the BWB is a concept that demonstrates a gain in fuel consumption, especially on longer ranges.


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