Installation aerodynamics of civil aero-engine exhaust systems

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dc.contributor.authorOtter, John J.
dc.contributor.authorStankowski, Tomasz
dc.contributor.authorRobinson, Matthew
dc.contributor.authorMacManus, David G.
dc.date.accessioned2019-05-17T15:04:50Z
dc.date.available2019-05-17T15:04:50Z
dc.date.issued2019-04-02
dc.description.abstractWithout careful consideration of aerodynamic installation effects on exhaust system performance the projected benefits of high bypass ratio engines may not be achievable. This work presents a computational study of propulsion system integration in order to quantify the effect that aircraft installation has on the aerodynamic performance of separate-jet aero-engine exhaust systems. Within this study the sensitivity of exhaust nozzle performance metrics to aircraft incidence and under wing position were investigated for two engines of different specific thrust. Upon installation, thrust generation was found to be beneficial or detrimental relative to an isolated engine depending on the position of the engine relative to the wing leading edge. The dominant installation effect was observed on the exhaust afterbodies and, over the range of engine positions investigated at cruise conditions, the installed modified velocity coefficient was shown to vary up to 1 % relative to an isolated engine. Furthermore, due to variations in the core nozzle mass flow rate by up to 10% relative to an isolated engine, it is concluded that aerodynamic installation effects need to be taken into consideration when sizing the core nozzle in order to ensure engine operability.en_UK
dc.identifier.citationOtter JJ, Stankowski T, Robinson M, MacManus DG. (2019) Installation aerodynamics of civil aero-engine exhaust systems, Aerospace Science and Technology, Volume 89, June 2019, pp. 345-355en_UK
dc.identifier.issn1270-9638
dc.identifier.urihttps://doi.org/10.1016/j.ast.2019.03.046
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/14181
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectEngine-airframe integrationen_UK
dc.subjectExhaust nozzleen_UK
dc.subjectAero-engineen_UK
dc.subjectDischarge coefficienten_UK
dc.subjectVelocity coefficienten_UK
dc.subjectComputational fluid dynamicsen_UK
dc.subjectPropulsion system integrationen_UK
dc.titleInstallation aerodynamics of civil aero-engine exhaust systemsen_UK
dc.typeArticleen_UK

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