for 95% efficient 200kw motor you'd need to dissipate 10kw. Doing it with air is problematic, and usually motors like this are water/oil cooled, otherwise it is

for 95% efficient 200kw motor you'd need to dissipate 10kw. Doing it with air is problematic, and usually motors like this are water/oil cooled, otherwise it is really limited to short sub-minute burst of full power. For example 160kw, 6.7kw/kg motor https://www.yasa.com/products/yasa-p400/ https://www.yasa.com/products/yasa-p400/