Rigid and flexible wings subject to large intensity turbulence
Rigid and flexible wings subject to large intensity turbulence
A rigid and flexible wing with NACA0012 profile was subjected to clean and turbulent conditions. The deformation of the flexible wing was studied in the clean flow condition using digital image correlation. Turbulent conditions generated by an active grid included turbulence intensities and integral length scales spanning from Tu = 9.5 % to 19.6 % and Lx = 0.14 m to 0.33 m respectively. A 6-axis load cell was used to measure the forces and moments generated by both wings in all flow conditions. The onset of stall was delayed with the introduction of free stream turbulence and similarly the peak time averaged lift coefficient increased, however at large intensities this improvement began to diminish. A comparison between the turbulent length scale and excitation of particular structural modes in the flexible wing were observed, sharing similarities with previous studies involving flexible wings in harmonic gusts.
American Institute of Aeronautics and Astronautics
Thompson, Craig
f6a694f9-2c34-4baf-bd66-d8152432c277
Ganapathisubramani, Bharathram
5e69099f-2f39-4fdd-8a85-3ac906827052
Symon, Sean P.
2e1580c3-ba27-46e8-9736-531099f3d850
20 June 2022
Thompson, Craig
f6a694f9-2c34-4baf-bd66-d8152432c277
Ganapathisubramani, Bharathram
5e69099f-2f39-4fdd-8a85-3ac906827052
Symon, Sean P.
2e1580c3-ba27-46e8-9736-531099f3d850
Thompson, Craig, Ganapathisubramani, Bharathram and Symon, Sean P.
(2022)
Rigid and flexible wings subject to large intensity turbulence.
In AIAA AVIATION 2022 Forum Proceedings.
American Institute of Aeronautics and Astronautics..
(doi:10.2514/6.2022-3446).
Record type:
Conference or Workshop Item
(Paper)
Abstract
A rigid and flexible wing with NACA0012 profile was subjected to clean and turbulent conditions. The deformation of the flexible wing was studied in the clean flow condition using digital image correlation. Turbulent conditions generated by an active grid included turbulence intensities and integral length scales spanning from Tu = 9.5 % to 19.6 % and Lx = 0.14 m to 0.33 m respectively. A 6-axis load cell was used to measure the forces and moments generated by both wings in all flow conditions. The onset of stall was delayed with the introduction of free stream turbulence and similarly the peak time averaged lift coefficient increased, however at large intensities this improvement began to diminish. A comparison between the turbulent length scale and excitation of particular structural modes in the flexible wing were observed, sharing similarities with previous studies involving flexible wings in harmonic gusts.
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Published date: 20 June 2022
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Funding Information:
C. Thompson thanks Dr. Renan Soares and Dr. Ilyas Karasu for the data obtained in the University of Southamptons 7x5 wind tunnel. The authors gratefully acknowledge funding from H2020 Project HOMER (Project No 769237) and EPSRC (Grant Ref: EP/R010900/1).
Venue - Dates:
2022 AIAA Aviation and Aeronautics Forum and Exposition (AIAA AVIATION Forum), , Chicago, United States, 2022-06-27 - 2022-07-01
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Local EPrints ID: 480522
URI: http://eprints.soton.ac.uk/id/eprint/480522
PURE UUID: f699769d-a280-4d12-99ec-7ce7f1c0c3a2
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Date deposited: 03 Aug 2023 17:26
Last modified: 18 Mar 2024 03:16
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Author:
Craig Thompson
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