[dispose13432]

But batteries are a significant source of weight.

[marcosdumay]

Look, you can't simply build a mini-plane with 10 combustion engines. It's a design you can't bootstrap powered with gas and migrate to electrical later.

You also can't put combustion engines in the end of small actuators, like it's on the article.

[phkahler]

10 is overkill. You might try two: https://www.youtube.com/watch?v=knb3qNq-Uho

The benefit of electric is the ability to very quickly alter thrust for that quad-rotor type of control.