Comments by "seneca983" (@seneca983) on "Why Electric Planes are Inevitably Coming" video.

  1. "They need to be dug out of the ground at immense energy and pollution output." Probably less so than kerosene.
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  2. "Once you get there, you could used them for short haul flights as well." Not necessarily. Batteries have a much better round-trip efficiency.
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  3. "What do you think flys all over Alaska, south America, the Caribbean?" Companies that only employ a single family worth of people (who also own the company)? Somehow, I doubt it.
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  4.  @esweet100  OK, I looked it up and it seems to have 47 employees. That's quite a bit more than just "mom and pop". It still counts as a small business but only barely.
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  5.  @MJer09128  It's comparatively little compared to the alternative of using fossil fuels to power vehicles.
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  6. Almost eliminated. Jet fuel is something like 25 times more expensive per kWh of energy content compared to electricity.
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  7.  @bjs301  "And you believe that?" You can very easily google jet fuel price and energy density and compare that to the price of electricity. The result is in the ballpark of a factor of 25.
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  8.  @bjs301  Even if the price of electricity were to double it would still be an order of magnitude cheaper than jet fuel per joule.
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  9.  @bjs301  You're just speculating.
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  10. "Which means that it ultimately isn't profitable for airlines to adopt electric anyway?" But it would still be for individual airlines compared to the alternative of being bidded out by a competitor. Also, profit margins can increase temporarily if you're the first one to adopt a cost-cutting technology.
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  11. But batteries have much better efficiency.
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  12. Not necessarily only general aviation. Short-haul flights could be viable as well.
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  13. "jet fuel is 50 times more energy dense than batteries. Until batteries make a quantum leap in technology there’s no overcoming that." I'm not convinced of that. Electricity is cheaper and for short-haul flights the weight of the batteries matters less, so on sufficiently short distances, they're probably viable.
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  14. "I still think hydrogen is a way better option for airplanes, since the range can also be way longer and hydrogen is very energy-dense." But batteries have higher efficiency.
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  15.  @MickenCZProfi  Efficiency matters for the cost. Obviously, battery-powered airplanes are only for short-haul flights but for that purpose, they seem more viable than hydrogen planes.
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  16.  @MickenCZProfi  When you said: "I still think hydrogen is a way better option for airplanes", I thought you meant they would be better for short-haul flights as well (which I wouldn't agree with) since you didn't specify.
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  17. "Flying at 10.000 feet assuming standard conditions is 20C Lower than sea level." I'm pretty sure keeping the batteries warm isn't more difficult than keeping the passengers warm.
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  18. Synthetic fuels have a lower efficiency.
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  19. On the other hand, planes might be, to some extent, charge when electricity is cheapest.
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  20. Not necessarily. They can also burn the hydrogen in turbines.
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