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D. Empl, L. Lorenz, C. Jeßberger, K.O. Plötner
Power train electrification of ground vehicles is an important and politically advocated avenue to pursue towards independence from fossil resources and reduction of CO2 emissions. Recently, effort has also been expended on the increased electrification of aircraft, including the future possibility of electric aircraft propulsion. In the present paper some of the essential future technologies for the electrification of aircraft are identified, based on the pre-conceptional short-haul aircraft "Ce-Liner" that was developed at Bauhaus Luftfahrt. Essential raw materials necessary for the realization of these technologies in aviation are assessed with regard to their projected future demand in 2035, the Ce-Liner's supposed year of entry into service, and in 2050. The result is a first estimate for the amount of essential "electric" raw materials to manufacture these aircraft. The material examples considered here are lithium for advanced energy storage in batteries, neodymium and dysprosium for permanent magnets in highly efficient electric motors for aircraft propulsion and, as an alternative to neodymium and dysprosium, yttrium, required for superconducting electrical components. The present results indicate that, although the future demand for these materials is extensively increased, their supply might be sufficient for aviation. Restrictions in the availability of raw materials are therefore no barrier in the realization of universally electric aircraft.
Deutscher Luft- und Raumfahrtkongress 2014, Augsburg
Deutsche Gesellschaft für Luft- und Raumfahrt - Lilienthal-Oberth e.V., Bonn, 2014
21,0 x 29,7 cm, 10 Seiten
Stichworte zum Inhalt:
electric propulsion, raw materials