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J. Bijewitz, A. Seitz, M. Hornung
The ambitious long-term environmental objectives for aviation recently announced by the European Commission stipulate significant efficiency improvements for aircraft and their propulsion systems. In view of this, the exploration of radical and unconventional propulsion system design solutions is necessary. In order to ensure an appropriate assessment of such highly advanced unconventional propulsion system concepts, consistent benchmarking against conventional power plant architectures featuring similarly advanced technology status is required. This paper focuses on the comparison of two different types of evolutionary improved Ultra-High Bypass Ratio turbofan engines that may be considered as reference technology benchmarks for a potential wide-body, medium to long range application (4800 nm, 340 passengers) with an entry-into-service year of 2035 . These include a direct drive three-spool design as well as a two-spool geared architecture. After having presented design laws implemented in a gas turbine performance software, several parametric design studies are employed for both engine layouts allowing for the identification of suitable design points, both for the isolated propulsion system and under consideration of first order vehicular cascade effects.
Deutscher Luft- und Raumfahrtkongress 2014, Augsburg
Deutsche Gesellschaft für Luft- und Raumfahrt - Lilienthal-Oberth e.V., Bonn, 2015
21,0 x 29,7 cm, 12 Seiten
Stichworte zum Inhalt:
geared turbofan, ultra-high bypass ratio