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Local and global deviations on outlet guide vanes in a turbine rear frame
2009 (English)Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

The Turbine Rear Frame (TRF), as General Electric calls it (Rolls Royce calls it Tail Bearing Housing and Pratt & Whitney’s name for it is Turbine Exhaust Casing), is the part downstream of the last turbine stage, see figure 1. The TRF is used for mounting the engine onto the aircraft wing and to deswirl (remove the angular component) the outgoing flow. With the increasing demands of fuel efficiency, all parts of the engine has to be optimized with this in mind. In the production of the parts, deviations such as surface roughness, small bumps, offset between adjacent vanes, change in vane thickness and change in vane angle can occur. These deviations will affect the flow properties in different ways. For example: Increase the pressure loss. Increase the air stream turning angle. Induce separation on the vane. Etc... In this thesis work both local (e.g. bumps) and global (e.g. angles) deviations have been studied.

Place, publisher, year, edition, pages
Keyword [en]
Technology, TRF, Turbine Rear Frame, Aerothermodynamics, TEC, Turbine, Exhaust Casing, TBH, Tail Bearing Housing, Deviations, Outlet, Guide Vane
Keyword [sv]
URN: urn:nbn:se:ltu:diva-48819ISRN: LTU-EX--09/107--SELocal ID: 63e966db-2cd4-440e-a615-76e0d8a3c237OAI: diva2:1022163
Subject / course
Student thesis, at least 30 credits
Educational program
Space Engineering, master's level
Validerat; 20101217 (root)Available from: 2016-10-04 Created: 2016-10-04Bibliographically approved

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