0 a part of a machine that spins, especially the device supporting the turning blades of a helicopter --
An average user with some practice usually achieves rotor speeds of about 1000 rad/s.
Then, humans rotate the wrist synchronous with the device, thus accelerating the rotor.
The coupling between the rotor dynamics and the external spherical shell causes motion of the sphere.
The robot is 5 metres long, 4 metres wide and 1.5 metres high, with the rotor 2.5 metres in diameter and the undercarriage retractable.
The initial states of the rotors can be set arbitrarily.
The rotor speed was determined by counting the pulses caused by a permanent magnet built into the rotor.
The reason is that the rotor axle starts to slide.
These consist of torques applied to the wheels and the rotor.
