Reliability model for helicopter main gearbox lubrication system using influence diagrams

H.S.J. Rashid, C.S. Place, D. Mba, R.L.C. Keong, A. Healey, W. Kleine-Beek and M. Romano

Reliability Engineering and System Safety, 2015, vol. 139, issue C, 50-57

Abstract: The loss of oil from a helicopter main gearbox (MGB) leads 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. This paper presents a model to assess the reliability of helicopter MGB lubricating systems. Safety risk modeling was conducted for MGB oil system related accidents in order to analyse key failure mechanisms and the contributory factors. Thus, the dominant failure modes for lubrication systems and key contributing components were identified.

Keywords: Helicopter main gearbox lubrication; Pressurized lubrication system failures; Influence diagrams; Human error; System reliability; Fault trees (search for similar items in EconPapers)
Date: 2015
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Citations: View citations in EconPapers (1)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:reensy:v:139:y:2015:i:c:p:50-57

DOI: 10.1016/j.ress.2015.01.021

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