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Energies 2018, 11(1), 179; doi:10.3390/en11010179

Design Considerations for the Electrical Power Supply of Future Civil Aircraft with Active High-Lift Systems

1
Institute for Drive Systems and Power Electronics, Leibniz Universität Hannover, 30167 Hannover, Germany
2
Institute of Electric Power Systems, Leibniz Universität Hannover, 30167 Hannover, Germany
3
Institute of Turbomachinery and Fluid Dynamics, Leibniz Universität Hannover, 30167 Hannover, Germany
4
Institute of Energy and Systems Engineering, TU Braunschweig, 38106 Braunschweig, Germany
These authors contributed equally to this work.
*
Authors to whom correspondence should be addressed.
Received: 15 December 2017 / Revised: 8 January 2018 / Accepted: 9 January 2018 / Published: 11 January 2018
(This article belongs to the Special Issue Towards a Transformation to Sustainable Aviation Systems)
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Abstract

Active high-lift systems of future civil aircraft allow noise reduction and the use of shorter runways. Powering high-lift systems electrically have a strong impact on the design requirements for the electrical power supply of the aircraft. The active high-lift system of the reference aircraft design considered in this paper consists of a flexible leading-edge device together with a combination of boundary-layer suction and Coanda-jet blowing. Electrically driven compressors distributed along the aircraft wings provide the required mass flow of pressurized air. Their additional loads significantly increase the electric power demand during take-off and landing, which is commonly provided by electric generators attached to the aircraft engines. The focus of the present study is a feasibility assessment of alternative electric power supply concepts to unburden or eliminate the generator coupled to the aircraft engine. For this purpose, two different concepts using either fuel cells or batteries are outlined and evaluated in terms of weight, efficiency, and technology availability. The most promising, but least developed alternative to the engine-powered electric generator is the usage of fuel cells. The advantages are high power density and short refueling time, compared to the battery storage concept. View Full-Text
Keywords: hybrid energy systems; electrochemical energy conversion and storage; carbon-free energy; energy system design; active flow control; efficient energy conversion and distribution hybrid energy systems; electrochemical energy conversion and storage; carbon-free energy; energy system design; active flow control; efficient energy conversion and distribution
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MDPI and ACS Style

Mueller, J.-K.; Bensmann, A.; Bensmann, B.; Fischer, T.; Kadyk, T.; Narjes, G.; Kauth, F.; Ponick, B.; Seume, J.R.; Krewer, U.; Hanke-Rauschenbach, R.; Mertens, A. Design Considerations for the Electrical Power Supply of Future Civil Aircraft with Active High-Lift Systems. Energies 2018, 11, 179.

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