Skinner, S.N. and Zare-Behtash, H. (2018) Study of a c-wing configuration for passive drag and load alleviation. Journal of Fluids and Structures, 78, pp. 175-196. (doi: 10.1016/j.jfluidstructs.2017.12.018)
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Abstract
Non-planar wing configurations are often hypothesised as a means for improving the aerodynamic efficiency of large transport aircraft; C-wings may have the ability to exploit and unify drag reduction, aeroelasticity, and dynamics and control but their capacity to do so is ambiguous. The purpose of this work is to provide an experimental demonstration with the aim of verifying the C-wing configurations practical application. Thus, the main objective of this investigation is to quantify the C-wing’s ability for drag and load alleviation relative to a planar wing of equivalent wingspan, lift, and root bending moment at Re = 1.5 × 106 . Surface clay flow visualisations have been used to provide insight into the flow over the wing surface. Aerodynamic performance metrics show that despite the C-wing operating with a 19.1% higher wing wetted area, a peak total drag reduction of 9.5% at α = 6 ◦ is achieved in addition to a 1.1% reduction in the wing root bending moment for equivalent lift. Force platform measurements in combination with laser vibrometry enabled a detailed understanding of the vibrational characteristics between the model and the wind tunnel. It is shown that the C-wing can passively attenuate buffet induced vibrations of the main-wing by up to 68.6% whilst simultaneously reducing total drag without a significant increase in wing weight or root bending moment.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | SKINNER, SHAUN and Zare-Behtash, Dr Hossein |
| Authors: | Skinner, S.N., and Zare-Behtash, H. |
| Subjects: | Q Science > Q Science (General) T Technology > TA Engineering (General). Civil engineering (General) T Technology > TJ Mechanical engineering and machinery |
| College/School: | College of Science and Engineering > School of Engineering > Autonomous Systems and Connectivity |
| Journal Name: | Journal of Fluids and Structures |
| Publisher: | Elsevier |
| ISSN: | 0889-9746 |
| ISSN (Online): | 1095-8622 |
| Published Online: | 04 February 2018 |
| Copyright Holders: | Copyright © 2017 Elsevier Ltd. |
| First Published: | First published in Journal of Fluids and Structures 78: 175-196 |
| Publisher Policy: | Reproduced in accordance with the publisher copyright policy |
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