https://interestingengineering.com/a-colorado-firm-claims-it-can-triple-the-power-of-electric-engines A Colorado Firm Claims It Can Triple the Power of Electric Engines Oct 29, 2021 ... Their motor, called the HPDM-250, is much smaller than their contemporaries and has a lesser mass as well ... a propulsion system of a commercial aircraft such as Boeing 737 must deliver a continuous power density of 12 kW/kg. However, conventional electric motors can only generate a maximum of up to 4kW/kg. Thanks to its reduced weight, the HPDM-250's power density clocks up to an impressive 13kW/kg ... this is sufficient to power ... electric boats and has urban air mobility applications ... other targets ... are short-haul, large commercial flights in the sub-1000 mile range ... https://inteng-storage.s3.amazonaws.com/img/iea/nZwXl52kwv/sizes/untitled-1_resize_md.png