Short and slim nacelle design for ultra-high BPR engines

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dc.contributor.authorRobinson, M.
dc.contributor.authorMacManus, David G.
dc.date.accessioned2017-02-09T15:17:55Z
dc.date.available2017-02-09T15:17:55Z
dc.date.issued2017-01
dc.description.abstractAn optimisation method consisting of the non-dominated sorting genetic algorithm (NSGA-II) and computational fluid dynamics of aero-engine nacelles is outlined. The method is applied to three nacelle lengths to determine the relative performance of different ultra-high bypass ratio engine nacelles. The optimal designs at each nacelle length are optimised for three objective functions: cruise drag, drag rise Mach number and change in spillage drag from mid to end of cruise. The Pareto sets generated from these optimisation computations demonstrate that the design space for short nacelles is much narrower in terms of these performace metrics and there are significant penalties in the off design conditions compared to the longer nacelle. Specifically the minimum spillage drag coefficient attainable, for a nacelle with a drag rise Mach number above 0.87, was 0.0040 for the shortest nacelle compared to 0.0005 for a nacelle which was 23% longer.en_UK
dc.identifier.citationMatthew H. Robinson, David G. MacManus, Kelvin Richards, and Christopher Sheaf. "Short and slim nacelle design for ultra-high BPR engines", 55th AIAA Aerospace Sciences Meeting, AIAA SciTech Forum, (AIAA 2017-0707)en_UK
dc.identifier.urihttp://dx.doi.org/10.2514/6.2017-0707
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/11411
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.titleShort and slim nacelle design for ultra-high BPR enginesen_UK
dc.typeConference paperen_UK

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