4 ms·
Megawatts is a power unit. To sustain 90MW for a 4hr flight you need a battery that can provide 360MWh of energy. Anyone care to do the numbers on how much a l
by TheSpiceIsLife 9y ago
Megawatts is a power unit. To sustain 90MW for a 4hr flight you need a battery that can provide 360MWh of energy.
Anyone care to do the numbers on how much a lithium ion battery would weigh to be able to deliver 360MWh, and remember if you want to use it more than once you can full charge no discharge it.
- Hextinium 9y agoA standard lithium ion battery has between 100-265 Wh/kg if you need 360 thousand to 135 thousand kg of lithium ion batteries plus probably a few thousand for charging equipment. A a 747 has capacity for about 45k kg of fuel so a factor of 4 improvement is needed before that is comparable.
- ShorsHammer 9y agoThe energy density of most fossil fuels is still far beyond anything we've managed through incremental improvement on 1900's battery technology. There's much more work to be done.