Transonic nacelle design for future medium range aero-engines

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dc.contributor.authorSchreiner, B. Deneys J.
dc.contributor.authorMacManus, David
dc.contributor.authorTejero, Fernando
dc.contributor.authorSánchez Moreno, Francisco
dc.contributor.authorSheaf, Christopher T.
dc.date.accessioned2022-09-13T13:07:38Z
dc.date.available2022-09-13T13:07:38Z
dc.date.issued2022-09-09
dc.description© The Author.
dc.description.abstractIt is expected that future civil aero-engines will operate at low specific thrust and high-bypass ratios to improve propulsive efficiency. This may result in an increment in fan diameter and associated weight and nacelle drag penalties. For this reason, these new architectures may use compact nacelles to meet the benefits of the new engine cycles. The aim of the current work is to evaluate the aerodynamic design and performance of compact nacelles for medium range, single-aisle aircraft with a cruise Mach number of M = 0.80. This work encompasses the 3D multi-point, multi-objective optimisation of nacelles by considering cruise conditions as well as a range of off-design requirements such as an increased cruise Mach number, a windmilling engineout diversion scenario and a windmilling end-of-runway case at high-incidence. This paper also explores the robustness and sensitivity of selected designs to flight Mach number (M), massflow capture ratio (MFCR) and angle of attack (AoA). The limits of the feasible design space for this new design challenge are identified. It is concluded that relative to a conventional aero-engine nacelle, the nacelle length (Lnac/rhi) can be reduced by approximately 13% with a mid-cruise drag reduction of 5.8%, whilst maintaining an acceptable aerodynamic performance at off-design conditions.en_UK
dc.identifier.citationSchreiner BDJ, MacManus DG, Tejero F, et al., (2022) Transonic nacelle design for future medium range aero-engines. In: 33rd Congress of the International Council of the Aeronautical Sciences: ICAS 2022, 4-9 September 2022, Stockholm, Swedenen_UK
dc.identifier.issn2958-4647
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/18438
dc.identifier.urihttps://www.icas.org/ICAS_ARCHIVE/ICAS2022/data/preview/ICAS2022_0380.htm
dc.language.isoenen_UK
dc.publisherICASen_UK
dc.rightsAttribution 4.0 International*
dc.rights© The Author.
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectnacelleen_UK
dc.subjecttransonicen_UK
dc.subjectUHBPRen_UK
dc.subjectmulti-objective optimisationen_UK
dc.titleTransonic nacelle design for future medium range aero-enginesen_UK
dc.typeConference paperen_UK

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