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Old 29th Jan 2024, 09:57
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petit plateau
 
Join Date: Jul 2007
Location: Europe
Posts: 204
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This is not EVTOL but is EV-flight. A very interesting read, with what looks to be much more sensible achievable engineering, and a pathway to staged development and economic operation within the existing eco-system

Dutch start-up Elysian breaks cover and pushes potential of all-electric 90-seater : Dutch start-up Elysian Aircraft claims newly published research supports its ambitious plan to develop an all-electric 90-seater for service entry in 2033, arguing that the potential for battery-powered aircraft has previously been significantly underestimated. Established last year, Elysian says the work carried out by its team – co-chief executive and chief technology officer Rob Wolleswinkel and director of design and engineering Reynard de Vries – alongside staff from the Delft University of Technology, signals a “paradigm shift in the potential for electric flight”.

https://www.flightglobal.com/air-tra...156431.article

Battery-electric aviation is commonly believed to be limited to small aircraft and is therefore expected have a negligible impact on the decarbonization of the aviation sector. In this paper we argue that, with the correct choice of design parameters and top-level aircraft requirements, the addressable market is actually substantial. To demonstrate this, the Class-II sizing of a battery-electric 90-seater is performed, and the environmental impact is assessed in terms of well-to-wake CO2-equivalent emissions per passenger-kilometer. The resulting 76-ton aircraft achieves a battery-powered useful range of 800 km for a pack-level energy density of 360
Wh/kg. For this range, it has an energy consumption of 167 Wh per passenger-kilometer and an environmental impact well below that of kerosene, eSAF, or hydrogen-based aircraft alternatives and comparable to land-based modes of transport. These results indicate that, to successfully reduce the climate impact of the aviation sector, battery-electric aircraft should not be designed as a niche product operating from small airfields but as commercial transport aircraft competing with fuel-based regional and narrowbody aircraft.


https://pure.tudelft.nl/ws/portalfil..._90_seater.pdf
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