Reliability model for helicopter main gearbox lubrication system using influence diagrams

Simple item page
dc.contributor.authorRashid, Hamad
dc.contributor.authorPlace, Simon
dc.contributor.authorMba, David
dc.contributor.authorKeong, R. L. C.
dc.contributor.authorKleine-Beek, Werner
dc.contributor.authorRomano, M.
dc.date.accessioned2019-12-18T10:49:56Z
dc.date.available2019-12-18T10:49:56Z
dc.date.issued2015-02-19
dc.description.abstractThis paper presents the development of a model to assess the reliability of helicopter main gearbox (MGB) lubricating systems. The loss of oil from a helicopter MGB will lead to increased friction between components, a rise in component surface temperatures, and subsequent mechanical failure of gearbox components. A number of significant helicopter accidents have been caused due to such loss of lubrication. Current certification requirements for Category A helicopters require that gearboxes which use pressurized lubrication systems must show a capability to continue operation for a period of 30 minutes after suffering a loss of oil. This paper reports on methods for assessing reliability of pressurized MGB lubrication systems. Safety risk modeling was conducted for MGB oil system related accidents and incidents in order to analyse the key failure mechanisms and the contributory factors. As such, the dominant failure modes for lubrication systems and key contributing components were identified. The Influence Diagram (ID) approach was then employed to investigate reliability issues of the MGB lubrication systems at the level of primary causal factors. Early indications show significant benefits from this approach where multiple influences would render alternative approaches overly complex. The ID tool can systematically investigate complex context of events, conditions, and influences that are direct triggers of failures. Within this study, an ID model was introduced to describe the interrelationships between MGB lubrication system failure types. In this way the influence of each of these factors on the overall MGB lubrication system reliability may be assessed.en_UK
dc.identifier.citationRashid HSJ, Place CS, Mba D, et al., (2015) Reliability model for helicopter main gearbox lubrication system using influence diagrams. Reliability Engineering and System Safety, Volume 139, July 2015, pp. 50-57en_UK
dc.identifier.cris4333603
dc.identifier.issn0951-8320
dc.identifier.urihttps://doi.org/10.1016/j.ress.2015.01.021
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/14861
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.titleReliability model for helicopter main gearbox lubrication system using influence diagramsen_UK
dc.typeArticleen_UK

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Reliability_model-helicopter_main_gearbox-2015.pdf
Size:
1.65 MB
Format:
Adobe Portable Document Format
Description:
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.63 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

Staff publications (SATM)