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Aerodynamic performance evaluation of a small UAS using multi-fidelity numerical analyses
Shah, Harsh Sathyanarayana, Nidhi Ang, Marcus Sen, Shreya Gomez Valbuena, Luis M. Olivares, Gerardo
Shah, Harsh
Sathyanarayana, Nidhi
Ang, Marcus
Sen, Shreya
Gomez Valbuena, Luis M.
Olivares, Gerardo
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2025-01-03
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Conference paper
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Citation
Harsh Shah, Nidhi D. Sathyanarayana, Marcus Ang, Shreya Sen, Luis Gomez and Gerardo Olivares. "Aerodynamic Performance Evaluation of a Small UAS Using Multi-Fidelity Numerical Analyses," AIAA 2025-0024. AIAA SCITECH 2025 Forum. January 2025.
Abstract
This study focuses on developing a fixed-wing aerodynamic performance model for the GREAT SHARK 330 UAS. The aerodynamic performance, static stability, and control effectiveness of the isolated-airframe configuration were evaluated using two numerical approaches: high-fidelity Computational Fluid Dynamics (CFD) simulations with StarCCM+ and a mid-fidelity surface-vorticity flow solver using Flight Stream. The results demonstrated good agreement between Flight Stream and Star CCM+ within the linear flow regime, while StarCCM+ exhibited more pronounced non-linear behavior at higher flow and control surface deflection angles. Given its lower computational cost, FlightStream offers a practical alternative for rapid aerodynamic evaluation. The study also highlighted certain limitations of the FlightStream approach, which will be addressed in future work. Future efforts will focus on dynamic stability analysis and validation of the aerodynamic model using flight-test data provided by Kansas State University. © 2025, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.
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This is an open access article under the CC BY license.
Publisher
American Institute of Aeronautics and Astronautics Inc, AIAA
Journal
Book Title
Series
AIAA Science and Technology Forum and Exposition, AIAA SciTech Forum 2025
6 January 2025 through 10 January 2025
Orlando
325579
6 January 2025 through 10 January 2025
Orlando
325579