05 Quadrotor Components Re-Edit
Quadrotor configuration
Why do the two pairs of propellers on a quadrotor spin in opposite directions?
One pair is for driving air up and the other is for driving air down.
It makes no difference, they could just as well be all spinning in the same direction
One pair is for moving the vehicle forward and the other for moving it backward.
The net torque from the two pairs of propellers cancels out so the vehicle is stable in flight.
Next Concept