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Individual Effects of Components on Cycle/Propulsive Efficiency for Variable Cycle Engines

Nauroz, Mobin and Becker, Richard-Gregor and Robinson , Jerry (2012) Individual Effects of Components on Cycle/Propulsive Efficiency for Variable Cycle Engines. Deutscher Luft- und Raumfahrtkongress 2012, 2012-09-10 - 2012-09-12, Berlin.

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The present paper presents a quantification method for the potential benefits of applying geometrically variable components to an UCAV aero engine concept. The method includes thermodynamic modeling techniques for a set of geometrically variable components as well as an optimization strategy to find the optimal schedule of the geometry variations in dependence of flight condition, figure of merit and engine constraints. First, a conventional generic two-spool mixed-flow turbofan engine comprising state-of-the-art component technology is designed as a baseline configuration. Then this cycle is used to study the influence of individual geometrically variable components on the thermodynamic cycle and finally to quantify the performance gain at selected off-design conditions. This examination serves as a preliminary study for the design of an optimal variable cycle engine (VCE). It does not investigate the optimal design of variable components for a specific task. An optimization process chain based on the commercial software framework ModelCenter™ is developed and applied to find the optimal settings of the geometrically variable components for different figures of merit at certain flight conditions. Finally, the baseline configuration without variable components is compared to the variable cycle configuration and the benefits of the geometrically variable components are assessed for a generic UCAV mission.

Item URL in elib:https://elib.dlr.de/78746/
Document Type:Conference or Workshop Item (Speech, Paper)
Title:Individual Effects of Components on Cycle/Propulsive Efficiency for Variable Cycle Engines
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Nauroz, MobinDLR, Institut für AntriebstechnikUNSPECIFIEDUNSPECIFIED
Becker, Richard-GregorDLR, Institut für AntriebstechnikUNSPECIFIEDUNSPECIFIED
Date:10 September 2012
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:Variable Cycle Engine, Advanced Engine Propulsion, Engine Performance, Thermodynamic Cycle, UCAV, Variable Engine Components
Event Title:Deutscher Luft- und Raumfahrtkongress 2012
Event Location:Berlin
Event Type:Conference
Event Start Date:10 September 2012
Event End Date:12 September 2012
Organizer:Deutsche Gesellschaft für Luft- und Raumfahrt - Lilienthal-Oberth e.V.
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Propulsion Systems (old)
DLR - Research area:Aeronautics
DLR - Program:L ER - Engine Research
DLR - Research theme (Project):L - Virtual Engine and Validation Methods (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Propulsion Technology > Engine
Deposited By: Nauroz, Mobin
Deposited On:17 Dec 2012 13:52
Last Modified:24 Apr 2024 19:45

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