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Dec 13, 2021 at 22:09 answer added Dakkaron timeline score: 2
Mar 2, 2015 at 7:29 answer added DanielLC timeline score: 3
Jan 20, 2015 at 2:40 comment added Mike Dunlavey For efficiency, the longer and thinner the blades, the better. Smaller rotors are less efficient, thus less flying duration. If you have an odd number of lifting rotors, you have net torque, so you need a tail rotor. Planes with lifting rotors can hover, but planes with wings have to fly in circles if they want to stay in one place. Put all those considerations together.
Jan 18, 2015 at 23:54 comment added Hypnosifl This article looks helpful. As others said, less stable and less efficient, but has the advantage of "mechanical simplicity".
Jan 18, 2015 at 23:21 comment added BowlOfRed Think complexity. With a single rotor you have to have a complex mechanism like rotor disk and tail rotor. With a quad copter, you can just use differential speeds on each rotor to control.
Jan 18, 2015 at 23:17 comment added tox123 a quadcopter is less stable than a helicopter due to the fact that there are more spiny things and it requires more thrust and has more inertia. It's only advantage is it's much simpler to make.
Jan 18, 2015 at 23:07 history tweeted twitter.com/#!/StackPhysics/status/556951120422391808
Jan 18, 2015 at 22:08 history edited user1833028 CC BY-SA 3.0
Corrected misspelling
Jan 18, 2015 at 21:53 history edited Danu
edited tags
Jan 18, 2015 at 21:47 history asked user1833028 CC BY-SA 3.0