Evaluating the Rationale for Folding Wing Tips Comparing the Exergy and Breguet Approaches

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dc.contributor.authorHayes, D.
dc.contributor.authorLone, Mudassir M.
dc.contributor.authorWhidborne, James F.
dc.date.accessioned2017-02-09T15:53:39Z
dc.date.available2017-02-09T15:53:39Z
dc.date.issued2017-01
dc.description.abstractThe design and development processes for future aircraft aims to address the environmental and efficiency challenges needed to facilitate the engineering of concepts that are far more integrated and require a multidisciplinary approach. This study investigates the benefit of incorporating span extension wing tips onto future aircraft configurations as a method of providing improved aerodynamic efficiency, whilst allowing the extension to fold on the ground to meet airport gate size constraints. Although the actuated wing tips are not studied in detail, the focus of this study is to compare two different methods of analysis that can be used to identify the benefit and limitations of adding such devices. The two methods considered are a quasi-steady implicit energy analysis based on the Breguet Range Equation and an explicit energy analysis based on the first and second laws of thermodynamics known as Exergy Analysis. It has been found that both methods provide agreeable results and have individual merits. The Breguet Range Equation can provide quick results in early design, whilst the Exergy Analysis has been found to be far more extensive and allows the complete dynamic behaviour of the aircraft to be assessed through a single metric. Hence, allowing comparison of losses from multiple subsystems.en_UK
dc.identifier.citationDavid Hayes, Mohammad M. Lone, James Whidborne, and Etienne Coetzee. "Evaluating the Rationale for Folding Wing Tips Comparing the Exergy and Breguet Approaches", 55th AIAA Aerospace Sciences Meeting, AIAA SciTech Forum, (AIAA 2017-0464)en_UK
dc.identifier.urihttp://dx.doi.org/10.2514/6.2017-0464
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/11413
dc.language.isoenen_UK
dc.publisherAmerican Institute of Aeronautics and Astronauticsen_UK
dc.rightsAttribution-Non-Commercial 3.0 Unported (CC BY-NC 3.0) You are free to: Share — copy and redistribute the material in any medium or format, Adapt — remix, transform, and build upon the material. The licensor cannot revoke these freedoms as long as you follow the license terms. Under the following terms: Attribution — You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. Information: Non-Commercial — You may not use the material for commercial purposes. No additional restrictions — You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.
dc.titleEvaluating the Rationale for Folding Wing Tips Comparing the Exergy and Breguet Approachesen_UK
dc.typeConference paperen_UK

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