Preliminary design framework for the power gearbox in a contra-rotating open rotor

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dc.contributor.authorSan Benito Pastor, Diana G.
dc.contributor.authorNalianda, Devaiah
dc.contributor.authorSethi, Vishal
dc.contributor.authorMidgley, Ron
dc.contributor.authorRolt, Andrew Martin
dc.contributor.authorBlock Novelo, David A.
dc.date.accessioned2021-01-11T16:06:11Z
dc.date.available2021-01-11T16:06:11Z
dc.date.freetoread2021-12-19
dc.date.issued2020-12-18
dc.description.abstractThis study introduces an innovative approach to sizing a differential planetary gearbox for a counter-rotating open rotor application. An updated methodology is proposed for the design of maximum load capacity gears based on the power transmitted, durability and space-envelope requirements of the application. The reported methodology has been validated by comparing the results to published data, demonstrating a maximum difference of 0.6% in geometry. Parametric analyses have also been performed to assess the impact of the design assumptions on gearbox dimensional trends. The proposed methodology enables the assessment of the impact of the preliminary transmission system design on engine performance and general arrangement. The characteristics of the gearset lead to an unequal torque split between output shafts (i.e. the propeller shafts). Given the design assumptions made, the study indicates that valid torque ratios would lie between 1.1 and 1.33. The impact of the torque ratio on the size of the gearbox has been analysed for equal rotational speeds and for different speeds between the output shafts. The study established that the transmission system design needs to be considered prior to selection of the torque ratio at engine design levelen_UK
dc.identifier.citationSan Benito Pastor DG, Nalianda D, Sethi V, et al., (2021) Preliminary design framework for the power gearbox in a contra-rotating open rotor. Journal of Engineering for Gas Turbines and Power, Volume 143, Issue 4, April 2021, Article number GTP-20-1061en_UK
dc.identifier.issn0742-4795
dc.identifier.urihttps://doi.org/10.1115/1.4049411
dc.identifier.urihttps://asmedigitalcollection.asme.org/gasturbinespower/article/143/4/041022/1092489/Preliminary-Design-Framework-for-the-Power-Gearbox
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/16150
dc.language.isoenen_UK
dc.publisherASMEen_UK
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectStressen_UK
dc.subjectPropellersen_UK
dc.subjectGeometryen_UK
dc.subjectGearsen_UK
dc.subjectEnginesen_UK
dc.subjectEngine designen_UK
dc.subjectDurabilityen_UK
dc.subjectTorqueen_UK
dc.subjectRotorsen_UK
dc.subjectMechanical drivesen_UK
dc.subjectDesignen_UK
dc.titlePreliminary design framework for the power gearbox in a contra-rotating open rotoren_UK
dc.typeArticleen_UK

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