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Design Under Uncertainty for Conceptual Aircraft Design Leveraging Analytical GradientsThe purpose of this paper is to extend previously demonstrated methodologies for design under uncertainty, leveraging analytical gradients to higher fidelity analysis for use in conceptual aircraft design. Previous work developed methods to generate analytical derivatives through polynomial chaos expansion, eliminating the need to estimate derivatives via complex step or finite difference. In this research, the authors build upon the methods to include physics-based aircraft design codes for aircraft design under uncertainty. This extends the previous work’s case study, which employed analytical aerodynamics and Breguet range estimations for wing design, to a higher fidelity level. In addition, this work extends previous work on interface development between the Uncertainty Quantification with Polynomial Chaos Expansion (UQPCE) software and Model-Based Systems Analysis and Engineering (MBSA&E) frameworks. This paper will discuss the development work necessary to perform multidisciplinary design under uncertainty as well as demonstrate the mechanics of interfacing UQPCE and conceptual aircraft design tools such as NASA’s Aviary code. In a case study, a conceptual aircraft design under uncertainty was conducted and compared against a traditional deterministic design. When given information about the uncertainty space from UQPCE, the optimizer was able to shape the output distribution and produce a more robust design
Document ID
20240014863
Acquisition Source
Langley Research Center
Document Type
Conference Paper
Authors
Ben D Phillips
(Langley Research Center Hampton, United States)
Joanna N Schmidt
(Langley Research Center Hampton, United States)
Eliot D Aretskin-hariton
(Glenn Research Center Cleveland, United States)
Robert D Falck
(Glenn Research Center Cleveland, United States)
Date Acquired
November 20, 2024
Subject Category
Aeronautics (General)
Meeting Information
Meeting: AIAA SciTech Forum and Exposition
Location: Orlando, FL
Country: US
Start Date: January 6, 2025
End Date: January 10, 2025
Sponsors: American Institute of Aeronautics and Astronautics
Funding Number(s)
WBS: 109492.02.07.06.03
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Technical Review
NASA Technical Management
Keywords
UQ
TTT
MDAO
OpenMDAO
Aviary
UQPCE
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