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Content Provider | The American Society of Mechanical Engineers (ASME) Digital Collection |
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Author | Haselbach, Frank Schiffer, Heinz-Peter Horsman, Mannfred Dressen, Stefan Harvey, Neil Read, Simon |
Copyright Year | 2001 |
Abstract | The original LP turbine of the BR715 engine featured “High Lift” blading, which achieved a 20% reduction in aerofoil numbers compared to blading with conventional levels of lift - reported in Cobley et al. (1997). This paper describes the design and test of a re-bladed LP turbine with new “Ultra High Lift” aerofoils, achieving a further reduction of approximately 11% in aerofoil count and significant reductions in turbine weight. The design is based on the successful cascade experiments of Howell et al. (2000) and Brunner et al. (2000). Unsteady wake - boundary layer interaction on these low Reynolds number aerofoils is of particular importance in their successful application. Test results show the LP turbine performance to be in line with expectation. Measured aerofoil pressure distributions are presented and compared with the design intent. Changes in the turbine characteristics relative to the original design are interpreted by making reference to the detailed differences in the two aerofoil design styles. |
Sponsorship | International Gas Turbine Institute |
File Format | |
ISBN | 9780791878507 |
DOI | 10.1115/2001-GT-0436 |
Volume Number | Volume 1: Aircraft Engine; Marine; Turbomachinery; Microturbines and Small Turbomachinery |
Conference Proceedings | ASME Turbo Expo 2001: Power for Land, Sea, and Air |
Language | English |
Publisher Date | 2001-06-04 |
Publisher Place | New Orleans, Louisiana, USA |
Access Restriction | Subscribed |
Subject Keyword | Design Cascades (fluid dynamics) Reynolds number Weight (mass) Wakes Airfoils Pressure Turbines Boundary layers Engines |
Content Type | Text |
Resource Type | Article |
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