A novel reverse hinge spoiler for flight loads control
A novel reverse hinge spoiler for flight loads control
This paper presents the reverse hinge spoiler, a novel spoiler concept, for flight load control. The reverse hinge spoiler is a control surface mounted on the upper surface of the wing. Unlike conventional hinged spoilers that are hinged at their front and rotate forward toward the leading edge of the wing, the proposed spoiler concept is hinged at its rear and rotates backward toward the trailing edge of the wing. The aerodynamic performance of the proposed spoiler is compared and contrasted with that of a conventional hinged spoiler for different flight conditions and hinge locations using the two-dimensional Reynolds-Averaged Navier–Stokes (RANS) with the k-omega SST turbulence model-based computational fluid dynamic solver. The results show that the proposed spoiler results in a larger increase in drag and a sharper reduction in the lift for a wide range of spoiler angles and flight conditions. Reversing the spoiler is found to cause a higher adverse pressure gradient in front of the spoiler compared to a conventional spoiler, as it ‘traps’ more flow, thereby increasing drag and reducing lift.
CFD, aerodynamic loads, flow separation, reverse hinge spoiler
Ajaj, Rafic
ff8ce68d-2ba5-449e-83da-f2be54e6d409
Djidjeli, Kamal
94ac4002-4170-495b-a443-74fde3b92998
8 October 2022
Ajaj, Rafic
ff8ce68d-2ba5-449e-83da-f2be54e6d409
Djidjeli, Kamal
94ac4002-4170-495b-a443-74fde3b92998
Ajaj, Rafic and Djidjeli, Kamal
(2022)
A novel reverse hinge spoiler for flight loads control.
Designs, 6 (5), [92].
(doi:10.3390/designs6050092).
Abstract
This paper presents the reverse hinge spoiler, a novel spoiler concept, for flight load control. The reverse hinge spoiler is a control surface mounted on the upper surface of the wing. Unlike conventional hinged spoilers that are hinged at their front and rotate forward toward the leading edge of the wing, the proposed spoiler concept is hinged at its rear and rotates backward toward the trailing edge of the wing. The aerodynamic performance of the proposed spoiler is compared and contrasted with that of a conventional hinged spoiler for different flight conditions and hinge locations using the two-dimensional Reynolds-Averaged Navier–Stokes (RANS) with the k-omega SST turbulence model-based computational fluid dynamic solver. The results show that the proposed spoiler results in a larger increase in drag and a sharper reduction in the lift for a wide range of spoiler angles and flight conditions. Reversing the spoiler is found to cause a higher adverse pressure gradient in front of the spoiler compared to a conventional spoiler, as it ‘traps’ more flow, thereby increasing drag and reducing lift.
Text
designs-06-00092-v3
- Version of Record
More information
Accepted/In Press date: 30 September 2022
Published date: 8 October 2022
Additional Information:
Funding Information:
The authors like to thank the GDP34 (20/21) Team at the University of Southampton for their significant contribution to this work. In addition, RM Ajaj likes to thank Muhammed S. Parancheerivilakkathil for regenerating some of the figures in this paper. The work presented herein has been partially funded by Abu Dhabi Education Council Award for Research Excellence Program (AARE 2019) through grant number AARE19-213.
Publisher Copyright:
© 2022 by the authors.
Keywords:
CFD, aerodynamic loads, flow separation, reverse hinge spoiler
Identifiers
Local EPrints ID: 471603
URI: http://eprints.soton.ac.uk/id/eprint/471603
ISSN: 2411-9660
PURE UUID: dc0060b2-5eac-473b-91a3-88b06188b674
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Date deposited: 14 Nov 2022 18:05
Last modified: 16 Mar 2024 22:47
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