craneplaneguy wrote:No power loss due to density altitude is a great feature of e propulsion. Biking at 8 or 9 K in Idaho, it is appreciated. The peddler can't say the same unfortunately.
No power loss, but aircraft power requirement still increases with 1/square-root of air density,* and cooling might become an issue especially at takeoff when runway density altitude is exacerbated by summer heat and you want full motor power available. One presumes that adiabatic lapse rate would make cooling loss due to low density less of an issue once airborn.
*Power requirement is related to true airspeed, while aircraft performance depends on indicated airspeed, which is where the sqrt factor comes into play.