alt Hacker NewsIt gives a sense of the functional size required.
Could the motor in question be shrunk down to 1kg, producing 59kW? Probably.
Could it be shrunk down to 1g? No.
It gives a sense of the functional size required.
Could the motor in question be shrunk down to 1kg, producing 59kW? Probably.
Could it be shrunk down to 1g? No.
But it doesn't. You can talk about micro-motors, implemented on a PCB, like [1] and get a number in the same ballpark. That's the whole point – it's a ratio, it tells you nothing about the absolute size of the motor.
[1] https://tymagnets.com/pcb-motors-and-wedge-magnets/