Perfectlogic
Member
I don't know... Far be it from me to doubt what elon musk has up his sleeve, but IMHO, there are several reasons why electric powered commercial jets is not practical at this time.
1) In airplanes, weight is paramount. Every pound is scrutinized. And given the energy density of fossil fuels vs. electric, at this point, hauling a huge battery for long distances just doesn't make economic sense for flights. Whatever savings in cost of electricity vs. jet fuel would be swamped by the loss of freight / passenger capacity due to increased weight.
2) Jets have really short turnover time. I believe Southwest turns its flights within 15 minutes at the gate. I don't think you'll be able to re-charge a plane's battery within 15 minutes. Every extra minute spent at the gate is hugely expensive and would again swamp any savings in fuel efficiency. And battery swap would be a huge deal given the expected size of the battery, likely requiring a larger crew than current refueling crews, again washing out any savings.
3) The process of certifying a battery to meet the safety standards of international flight is long, expensive, and fraught with difficulty. Witness Boeing's troubles with a much smaller, less critical battery in its 787. Think those tesla fires were unfairly damaging to the company? In the 787, a few battery fires and the FAA grounded the entire fleet! I'm not sure why Tesla would want to tackle something like that when there are so many other low-hanging fruit it could pursue right now (grid storage, pickup trucks, delivery trucks, etc.)
4) Annual revenue for commercial jet manufacturing is dwarfed by annual revenue for automobiles. Why go after a much smaller, more difficult market when there's still plenty of automobile market to chase?
Many seems to think that the secret r&d spending is grid storage and autonomous driving, but it is already known they are working on these things so it doesn't make sense to me. Obviously the first plane Tesla would make wouldn't be a 787 replacement, think about how Tesla produced the niche Roadster as their first car model, their first aircraft would probably be a similar niche product being a smaller plane not necessarily meant for commercial use. This would probably take several years so why not start now? I'm pretty sure the stock would fly the day Elon announces they have started pursuing this goal. Didn't they get the Model S to market on less than a billion? If I recall correctly on that I am sure they could make a small plane on a $200M a year r&d budget in 6-7 years. I am not saying they are definately working on this right now, but I give it a 30% chance, which is a lot given noone have mentioned it before.
EDIT: I am obviously not saying they should stop developing new electric car models, that would be absurd. But with $2,6B in cash with a lot more starting to roll in soon with the expanding production of high margin S/X they should be able to find $200M/y to be on the forefront of the electric aircraft revolution too, I am sure it would be a very good investment.