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T. Klauke, D. Söhner, B. Drees, P. Winkelmann, R. Klomp-de Boer
Aiming at increasing overall efficiency for future aero engines, the accuracy, robustness and lifetime of the variable stator vane (VSV) system has to be increased. In addition to this, also higher temperatures and pressures due to the increased overall pressure ratio (OPR) have to be considered. In order to achieve these objectives without compromising the weight and cost of the system, the unison ring design (located around the high pressure compressor (HPC) casing, connecting the individual stator vanes with the crankshaft- or bellcrank mechanism) has to be improved in terms of accuracy, temperature and load capability. Within the EU-funded R and T programme E-BREAK (2012 - 2016) a non-conventional VSV unison ring has been further developed by the DLR Stuttgart in order to consider the enhanced requirements. Expert knowledge regarding cost-efficient CFRP-manufacturing from the NLR was incorporated during the design phase of the hybrid unison ring as well as detailed interface requirements from the aero engine manufacturer. The final parts will be manufactured by the NLR in 2015 and tested under realistic, engine-like conditions at the Technical University of Dresden.
Deutscher Luft- und Raumfahrtkongress 2015, Rostock
Deutsche Gesellschaft für Luft- und Raumfahrt - Lilienthal-Oberth e.V., Bonn, 2015
21,0 x 29,7 cm, 9 Seiten
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