Performance Effects of Leading-Edge Protuberances on a Fixed-Wing Aircraft

Floyd, Shaun (2013). Performance Effects of Leading-Edge Protuberances on a Fixed-Wing Aircraft Honours Thesis, School of Engineering, The University of Queensland.

       
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Author Floyd, Shaun
Thesis Title Performance Effects of Leading-Edge Protuberances on a Fixed-Wing Aircraft
School, Centre or Institute School of Engineering
Institution The University of Queensland
Publication date 2013
Thesis type Honours Thesis
Supervisor Alexander Klimenko
Total pages 63
Language eng
Subjects 0913 Mechanical Engineering
Formatted abstract
The humpback whale pectoral fin is unique because of the large tubercles or protuberances located on the leading edge. Investigation into the flow characteristics around tubercles has led to development of improved wind turbine and industrial fan blades furnished with sinusoidally arranged bumps, imitating the morphology of the humpback whale flipper. Research regarding the potential application to fixed-wing aircraft has yet to be explored. Computational fluid dynamics experiments using quasi-2D wing sections based on a Cessna 172 wing profile with and without leading-edge protuberances confirms what existing studies have established; that the modified geometry delivers a more gradual stall and increases lift coefficient beyond 20  angle of attack. Application of the technology to an aircraft wing provides an advantage during approach and landing where maximum lift and drag are desired. An analytical comparison with existing flow control devices considering typical flight conditions concludes that the new technology does not achieve new performance and adds unnecessary complexity.
Keyword Fixed-Wing Aircraft

Document type: Thesis
Collection: UQ Theses (non-RHD) - UQ staff and students only
 
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Created: Wed, 08 Jul 2015, 14:55:02 EST by Asma Asrar Qureshi on behalf of Scholarly Communication and Digitisation Service