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Computational fluid dynamics-based aero-servo-elastic analysis for gust load alleviation

Computational fluid dynamics-based aero-servo-elastic analysis for gust load alleviation
Computational fluid dynamics-based aero-servo-elastic analysis for gust load alleviation
Gust load alleviation using computational fluid dynamics as source of the aerodynamic predictions is carried out in the time domain. To this goal, an aero-servo-elastic reduced order model is generated. The model capitalises on two key aspects: a dimensional reduction through proper orthogonal decomposition, further enhanced via balanced truncation; and an analytically derived mechanism to reproduce the gust effects in the reduced order model. The compact model in state-space form thus obtained was then used for control design synthesis. Assuming information on the structural motion only is accessible for feedback, a linear quadratic regular was designed, first, on the reduced model, and then validated on the large computational model. Results
are presented for two configurations: an aerofoil and the modified AGARD 445.6 wing, both with a trailing-edge control surface. Studies are presented for the gust response to discrete gusts and continuous turbulence. In particular, for the latter, the standard deviation of the loads and the structural motion was reduced as much as 77%.
0021-8669
1619-1628
Chen, Gang
1118ba82-ae57-4eb9-9c64-c011c531995b
Zhou, Qiang
4c4c0a76-3842-427c-89db-28e6ba49ac8a
Da Ronch, Andrea
a2f36b97-b881-44e9-8a78-dd76fdf82f1a
Li, Yueming
25bddbfd-fafe-4e4d-a575-af5dcff2693b
Chen, Gang
1118ba82-ae57-4eb9-9c64-c011c531995b
Zhou, Qiang
4c4c0a76-3842-427c-89db-28e6ba49ac8a
Da Ronch, Andrea
a2f36b97-b881-44e9-8a78-dd76fdf82f1a
Li, Yueming
25bddbfd-fafe-4e4d-a575-af5dcff2693b

Chen, Gang, Zhou, Qiang, Da Ronch, Andrea and Li, Yueming (2018) Computational fluid dynamics-based aero-servo-elastic analysis for gust load alleviation. Journal of Aircraft, 55 (4), 1619-1628. (doi:10.2514/1.C034621).

Record type: Article

Abstract

Gust load alleviation using computational fluid dynamics as source of the aerodynamic predictions is carried out in the time domain. To this goal, an aero-servo-elastic reduced order model is generated. The model capitalises on two key aspects: a dimensional reduction through proper orthogonal decomposition, further enhanced via balanced truncation; and an analytically derived mechanism to reproduce the gust effects in the reduced order model. The compact model in state-space form thus obtained was then used for control design synthesis. Assuming information on the structural motion only is accessible for feedback, a linear quadratic regular was designed, first, on the reduced model, and then validated on the large computational model. Results
are presented for two configurations: an aerofoil and the modified AGARD 445.6 wing, both with a trailing-edge control surface. Studies are presented for the gust response to discrete gusts and continuous turbulence. In particular, for the latter, the standard deviation of the loads and the structural motion was reduced as much as 77%.

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Accepted/In Press date: 26 November 2017
e-pub ahead of print date: 11 January 2018

Identifiers

Local EPrints ID: 416041
URI: http://eprints.soton.ac.uk/id/eprint/416041
ISSN: 0021-8669
PURE UUID: fb1da259-87cc-45b0-9fed-9c0fe062a6e1

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Date deposited: 30 Nov 2017 17:30
Last modified: 26 Nov 2021 05:26

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Contributors

Author: Gang Chen
Author: Qiang Zhou
Author: Andrea Da Ronch
Author: Yueming Li

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