4 ms·
Multirotor designs are not limited to 4 motors. You can add more for redundancy. Four is common because it’s the smallest number that has good control character
by robotresearcher 6y ago
Multirotor designs are not limited to 4 motors. You can add more for redundancy. Four is common because it’s the smallest number that has good control characteristics.
- im3w1l 6y agoMind explaining that one? To me it seems they have an unnecessary degree of freedom: the "diagonal" one. ox xo What issues do you get with three motors in an equilateral triangle? EDIT: I managed to find it, with even number of motors you can prevent unwanted yawing, by letting half spin clockwise and other half spin counterclockwise.
- robotresearcher 6y agoYep. More generally, you can induce the yaw rate you want (up to a limit) in either direction, including zero. I’m not an expert but IIRC with three rotors you need to be able to control a bit of roll of just one of them to have stable flight control.