Analysis of Pareto frontiers for multidisciplinary design optimization of aircraft

Authors:  Franco Mastroddi, Stefania Gemma

Abstract:
The goal of this work is the development of a methodology and a computational environment to enable a Pareto frontier analysis for the preliminary design optimization of a wing/horizontal tail/fuselage aircraft configuration. Integrated Multidisciplinary Design Optimization (MDO) is used to minimize a composite multi-objective function. A Pareto frontier in the 3D objective space of weight (minimum), aerodynamic efficiency (maximum), and mission range (maximum) is constructed for the actual configuration of a regional aircraft. MDO techniques improve upon the obtained solution compared to classical sequential design, as they account for all interactions and influences between the disciplines under investigation. The multi-objective problem is solved by generating a set of Pareto optimal solutions that constitute a Pareto frontier. Three different formulations of the Weighed Global Criterion (WGC) method are used, and these functional formulations are analyzed and the concept of a local approximation function is developed to build the Pareto frontier. The developed algorithm uses a commercial optimization code and a commercial finite element code to perform the required analyses. Finally, a criterion for selecting an ultimate design solution for the aircraft on the Pareto frontier is addressed.

Keywords:
MDO
Multi-objective optimization
Pareto analysis
Aircraft preliminary design

Published in: Aerospace Science and Technology  (Volumes 28, Issue 1, July 2013)

Publisher: Elsevier

ISSN Information: 1270-9638

Analysis of Pareto frontiers for multidisciplinary design optimization of aircraft

Bình luận của bạn

*

*

*

*

 Captcha

Gửi bình luận nhập lại