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Old 03-13-2018, 10:21 AM   #111 (permalink)
All Darc
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This is not the news I saw a couple years ago, but it's also interestinh :

https://phys.org/news/2015-04-world-...-aircraft.html

5KW por kg... impressive. Industry have less than 1KW per KG in general.

If we compare to bicycle electric motor, heavy and low power.

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