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Improving the Decision-Making Process under the Presence of Uncertainty in Airplane Conceptual Design, Creating an Intuitive Platform

Gholinejhad, Nargess | 2022

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 55732 (45)
  4. University: Sharif University of Technology
  5. Department: Aerospace Engineering
  6. Advisor(s): Banazadeh, Afshin
  7. Abstract:
  8. Improving performance and reducing costs is a constant competition between aircraft designers, which has made multi-disciplinary optimization always part of the design process. In the design process of a conventional aircraft, there are various uncertainties in technology levels, mission parameters, costs and operating environment. It is clear that these uncertainties will make the decision-making difficult and lead to uncertainties in the output of the design; on the other hand, considering them will increase the computational cost. Understanding how much the uncertainty of each parameter will affect the overall output of the design and its performance, makes it possible to ignore the low-impact parameters and focusing on the most effective parameters, when there is a cost and time constraint. Creating a platform that can intuitively make logical connections between design goals, design constraints, uncertainties, and feasibility can lead to purposeful design optimization by considering the margin of uncertainties in the conceptual design phase. The output of this research is information that helps the decision maker a trade-off between risk, cost and performance in the design space
  9. Keywords:
  10. Decision Making ; Aircraft Conceptual Design ; Multi-Disciplinary Design Optimization ; Robust Optimization ; Optimization Under Uncertainty ; Intuitive Platform ; Multi-Fidelity Optimization ; Process Improvement

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