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Computational methodology to compute small uncrewed aircraft deflections due to aerodynamic interaction with a rotorcraft
Sathyanarayana, Nidhi Shah, Harsh Gomez Valbuena, Luis M. Olivares, Gerardo
Sathyanarayana, Nidhi
Shah, Harsh
Gomez Valbuena, Luis M.
Olivares, Gerardo
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Issue Date
2025-01-03
Type
Conference paper
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Keywords
Rotocrafts,Commercial aircraft,Computational fluid dynamics, Six degree of freedom, Code of Federal Regulations,Landing gear| Vortex structure,Aerodynamic moments,Hover Out of Ground effect,Finite element modeling
Subjects (LCSH)
Citation
Nidhi D. Sathyanarayana, Harsh Shah, Luis Gomez and Gerardo Olivares. "Computational Methodology to Compute Small Uncrewed Aircraft Deflections Due to Aerodynamic Interaction With a Rotorcraft," AIAA 2025-0671. AIAA SCITECH 2025 Forum. January 2025.
Abstract
This paper describes the effect of the flow field of a rotorcraft operating under 14 Code of Federal Regulations (CFR) Part 27 requirements on the trajectory of a small Uncrewed Aircraft (UA). We performed the trajectory analyses using Computational Fluid Dynamics (CFD) analysis coupled with a six-degrees-of-freedom (6-DOF) solver. Prescribed trajectories were assigned to the small UA for eight scenarios. The deviations from the prescribed motion due to the aerodynamic interaction with the rotorcraft flow field were monitored. The scenarios combined two rotorcraft flight modes, two UA flight modes, and four release locations. The rotorcraft operating conditions were based on a low-altitude holding flight pattern. We observed that the aerodynamic interaction between the UA and the rotorcraft’s flow field in descent had a minimal effect on the UA’s trajectory. In contrast, the aerodynamic interaction during hover resulted in noticeable changes in both the orientation and location of the UA at the time of impact. © 2025, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.
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Description
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