Yeah, it’s easier to use lab test data from Mavic Mini 3 specs: 51 minutes flight time at 21kph [0]. The battery capacity is 28.4Wh [1]. So, 18.4/(21*51/60) = 1.6 Wh/km. Assuming US is 2800 miles (4500 km) wide, we get 7.2 kWh of energy under ideal conditions, without accounting for charging efficiency and the impact of the charging system weight on flight time.
Edit: 21kph is the optimal speed for max flight time but not for the best energy efficiency per km. Most efficient speed is somewhere between that and the top speed. But this is the right order of magnitude at least.
Yeah, it’s easier to use lab test data from Mavic Mini 3 specs: 51 minutes flight time at 21kph [0]. The battery capacity is 28.4Wh [1]. So, 18.4/(21*51/60) = 1.6 Wh/km. Assuming US is 2800 miles (4500 km) wide, we get 7.2 kWh of energy under ideal conditions, without accounting for charging efficiency and the impact of the charging system weight on flight time.
Edit: 21kph is the optimal speed for max flight time but not for the best energy efficiency per km. Most efficient speed is somewhere between that and the top speed. But this is the right order of magnitude at least.
[0] https://mavicpilots.com/threads/mini-3-51-minute-flight-time...
[1] https://forum.dji.com/thread-291222-1-1.html