Installation aerodynamics of civil aero-engine exhaust systems

Show simple item record Otter, John J. Stankowski, Tomasz Robinson, Matthew MacManus, David G. 2019-05-17T15:04:50Z 2019-05-17T15:04:50Z 2019-04-02
dc.identifier.citation Otter 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. 345-355 en_UK
dc.identifier.issn 1270-9638
dc.description.abstract Without 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.language.iso en en_UK
dc.publisher Elsevier en_UK
dc.rights Attribution-NonCommercial-NoDerivatives 4.0 International *
dc.rights.uri *
dc.subject Engine-airframe integration en_UK
dc.subject Exhaust nozzle en_UK
dc.subject Aero-engine en_UK
dc.subject Discharge coefficient en_UK
dc.subject Velocity coefficient en_UK
dc.subject Computational fluid dynamics en_UK
dc.subject Propulsion system integration en_UK
dc.title Installation aerodynamics of civil aero-engine exhaust systems en_UK
dc.type Article en_UK

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