Reason for using bend arms in a drone

ArduCopter Copter 4.0
1

Hi everyone
I have been looking for some drone designs and got fascinated about the bend arms being used. I searched about it but couldn’t get any leads. I have few questions about that concept-

  1. How does it affect the stability of the drone?
  2. Does that really reduce overall frame weight?
  3. Does that affect flight time as well?

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2

On that small frame in your picture the bent arms are so it can run 8 props and motors without them touching the ground when landed. The 8 props and motors are to remain small and nimble yet still lift a good quality camera.

1 Like
3

That was just for reference, I’m not going use that frame. My questions are still there?

4

The answer to all three of your questions is No. They are useful for some airframe designs (shorter landing gear, top mounted payloads, compact folding, etc.) - but do not solely provide any benefits to flight time or stability.

5

Thank you manav for your response. But this config does create unstable flights and the drone have higher tendency to topple in gusts. Is this fact correct?

6

No that is not correct. The configuration has no effect on flight stability or wind resistance.