3 ms·

Was wondering that too. Also can‘t the rotors be shrouded or does that affect the power/agility negatively?

• sandos 5y ago
  This is really very light so I suspect the weight penalty is too much.
• pininja 5y ago
  It’s a lot of weight for little reward. A duct/shroud may not even improve the safety in a significant way (if it were thick enough it could, but it’d need to very light)