Efficient Modal Design Variables for Optimization of Aero-Elastic Wing

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Efficient multi-disciplinary optimization is presented for aero-structural wing optimization using efficient low-dimensional modal design variables. Orthogonal aerofoil design variables are derived in the geometric space via singular value decomposition. Orthogonality of design variables leads to a well-conditioned design space and encourages positive optimizer convergence. These are applied in a sectional fashion for fixed planform drag minimization of a flexible transonic wing. Shock-free solutions are demonstrated for the rigid wing, indicating suitability of the aerofoil modes for sectional-based wing optimization. However, these wings have poor performance when deformed under flight loads, hence full aeroelastic performance is taken into account. Encouragingly, shock-free solutions are again found. Loading is shifted outboard, leading to increased tip-deflection. Monotonic improvement in objective with increase in dimensionality is also observed.
Original languageEnglish
Title of host publicationAIAA SciTech Forum and Exposition 2020
PublisherAmerican Institute of Aeronautics and Astronautics Inc. (AIAA)
Number of pages18
Publication statusE-pub ahead of print - 5 Jan 2020
EventAIAA SciTech Forum 2020 - Hyatt Regency Orlando, Orlando, United States
Duration: 6 Jan 202010 Jan 2020


ConferenceAIAA SciTech Forum 2020
Country/TerritoryUnited States

Bibliographical note

Provisional acceptance date added based on information for current conference.


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  • HPC (High Performance Computing) Facility

    Sadaf R Alam (Manager), Steven A Chapman (Manager), Polly E Eccleston (Other), Simon H Atack (Other) & D A G Williams (Manager)

    Facility/equipment: Facility

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