4 ms·
The electric motor is around 90% efficient, but the thermal efficiency of a jet engine is (if I recall correctly) only around 30%. So the batteries only need t
by mhandley 11y ago
The electric motor is around 90% efficient, but the thermal efficiency of a jet engine is (if I recall correctly) only around 30%. So the batteries only need to contain 1/3 of the energy of the jet fuel. Batteries are still a long way off from this, but that factor of 3x makes it somewhat nearer than it would otherwise be.
- jkot 11y agoAnd what about dead weight of battery after its empty?
- deleted 11y ago[deleted]
- doctorstupid 11y agoBut jets combine the energy of air and fuel, whilst electric motors are solely powered by batteries.