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Conception of a tooloptimizing the sizing of anelastomeric oil level retainer
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, Lightweight Structures.
2017 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

afran Transmission Systems, subsidiary of Safran Group, is the world’s leading supplier of power transmissions for commercial aircrafts with over 100 seats. The products they develop require lubrication in order to ensure their good functioning. Several devices exist to this end such as metallic gaskets which guarantee the tightness of the housing containing the components whereas the aim of an elastomeric retainer is to maintain a sufficient level of oil for the lubrication of a shaft and the associated splines for instance. For such products as those developed by Safran Transmission Systems, tests must of course be performed in order to demonstrate their functioning and lead to their certification and afterwards, their use in aeronautical industry. In August 2015, a phenomenon named fretting corrosion affecting the splines of a shaft was identified. After some research of the root cause, it was found that an elastomeric retainer was not designed efficiently and could not ensure its function, namely maintain a sufficient oil level for the lubrication of the component affected by fretting corrosion. The problem was solved with a new retainer’s design. The use of a tool predicting the behavior of such a retainer could have avoided these problems which justifies the subject of the M.Sc.-thesis project. This paper consequently presents the solutions adopted in order to develop such a tool. For confidentiality reasons, this report will not include any data (concerning dimensions or results amongst others).

Place, publisher, year, edition, pages
2017. , p. 48
Series
TRITA-AVE, ISSN 1651-7660 ; 2017:37
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:kth:diva-211164OAI: oai:DiVA.org:kth-211164DiVA, id: diva2:1127924
External cooperation
Saffran
Examiners
Available from: 2017-07-20 Created: 2017-07-20 Last updated: 2017-07-20Bibliographically approved

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  • apa
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